N55 main bearings. ACL BMW N54B30/N55B30/S55B30 3.

N55 main bearings Main crank bearings were changed to the S55 ones. Every spin or $1 spent = 1 entry!!! No Most rod and main bearings run best with . Current Stock: Add to Wish List. or Best Offer . King Bearings - BMW N55 B30A / N53 B30A / N52 B30A Main Bearing Set | MB7776GPC. I have found a oil I'm not sure if these were both a problem because I think I should have gotten a warning if the oil pressure was low enough to damage a bearing. Improve your engine's performance and replace old worn out OEM bearings with these long-lasting, high-quality Main Pretty sure the rod bearings in the M2 N55 are the same. Location: Undisclosed. to/3bqRXrR Part Number I ordered: CAL-CR222SV Hey guys and welcome back to Part 2 of the BMW N55 Engine Rebuild Project. 90. Our coated bearings are "friction resistant" making thermal breakdowns that can occur due to lack of lubrication a much less common occurrence. Oddly enough the video on the GPC website shows Ghassan and his 135i even though he runs the standard CR 222SV (I believe). BMSAUTOMOTIVE (535) 97. WEIGHT: 2. 18. Engine Main Bearing Kit - Size 0. And the car made it ACL RACE Series performance engine bearings are recognized as a premier brand throughout the motorsports world. 13. Menu N55's for sure have main/crank issues that have yet to be determined. BMW N52B25A. I even have my car tuned to run 212 I have an N55 sitting in my garage with a spin bearing. 0L, BMW E60 535i N55 3. I originally spun a rod bearing in my 2011 335i. From concept to final product, everything is done under one roof. BMW 3. Engine Oil. Part# MB7776GPC. Applications: N54B30; N55B30; S55B30 N55 Crankshaft Crankshaft Main Bearings As on the N54 engine, the main bearings on the crankshaft are designed as two component bearings free of lead. Race Series rod and main bearings are standard components in Race engines that have set records and won championships from Mexico to Bonneville – from sport compact drift racing to small block NASCAR, IHRA and NHRA cmpetitions. And there was large flakes in my oil pickup tube screen and in bottom of my oil pan. Toevoegen aan winkelwagen The cost was less than half. Pistons and Rings. 99 per month for 12 months with PayPal BMW N55B30 N55 MAIN BIG END CONROD BEARINGS 0. I had JB4, intake, chargepipe and a dp. 00mm 9. ACL Race Series performance engine bearings are recognized as a premier brand throughout the motorsports world. on orders $49 and up . D. are also variables. Enter your search keyword Advanced: Daily Deals; Brand Outlet; Gift Cards; Help & Contact; Sell; Watchlist RACE Series rod and main bearings are standard components in RACE engines that have set records and won championships from Mexico to Bonneville - f. Connecting rods. 1% positive; Seller's other items Seller's other items; Contact seller; US $599. M135i, 335i, 535iX & 740i) Increase quantity for KING BMW N55 E82 E90 F10 F30 Standard Size Main Bearing Kit (Inc. All of them have been early production N55 ALL in E70 chassis minus one which was in a F30. 25 Oversized 1 = yellow bearing, 2= green bearing. from United States. Adding these up, we get . 0L Standard Size Main Bearing Set. It was spun in the sense that the tabs on the bearings were flattened and the bearings were free-spinning within the rods and rod end caps. BMW N52 | N53 | N54 | N55 | 323 | 325 | 330 | KING Main Bearings. This is the lower main bearing used on N51/N52, N54, and N55 engines. Taken from their website, the bearings have several layers Well, due to time restrictions i will replace the centre main bearings in the meantime. 635mm (. It simplified shortcomings and improved upon a winning formula to become a Turbo Engines: this is the lower bearing shell in N20, N26, N54, N55, and S55 BMW turbo engines. ACL-ENG-N55-002. In Stock. 002˝ inches of oil clearance for a 2-inch diameter shaft – but these numbers will vary with Hey I believe there are no issues with N55 rod bearings these engines are pretty reliable and robust. 00 via THIS LINK. Posts. Now available is the Main Bearing set to suit the BMW N54, N55 and S55 Inline 6 cylinder turbo engines. Post by cgarb » Mon Aug 28, 2017 10:52 pm. 0L Standard Size Main Bearing Set BMW N52/N54/N55/S55B30. or as low as $ /mo with . Rod bearings fail for many reasons; mostly, due to oil starvation which causes them to overheat and spin on ACL Race Series main (crankshaft) bearings for the a wide range of BMW six-cylinder engines. E85/E86, BMW 1M Coupe, F82/F83 M4, F87 M2, E8X, E89, F22, F87 M2 Competition, F20/F21, Engine Components, BMW S55, E9X, F80 M3, BMW N54, BMW N55, HEL Performance HEL 3/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings. Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts. • Smooths big end supply cut-off avoiding pressure pulsing and cavitation. Sump Washer. 5:1 22mm Pin 361360 All MAHLE Motorsport bearings are laser marked. The S55 engine is used in the F87 M2, F80 M3 and F82/F83 M4 vehicles. 0 PETROL X1 X3 X4 X5 X6 3 E90. G42Model Year: 2021 + F44Model Year: 2020 + Previous Generations Ask any BMW tech as well. 00 $ VAT excl. 97. Improve your engine's performance and replace old worn out OEM bearings with these long-lasting, high-quality Main Specially coated and constructed to reduce friction in your N54 to a minimum; enabling lower temps and faster revolutions in your expensive BMW engine. Delivering to Nashville 37217 Update location Automotive Parts & Accessories. RACE Series rod and main BMW’s N55 took over from one of the most revered engines to come out of Bavaria. GPC Silver Based. Also 3 out of 7 main bearings were worn. ACL BMW S55 / N55 / N54 – M135i / M235i / M2 / M3 / M4 Standard Size Performance Main Crankshaft Bearing Set £ 195. Old. Facebook Twitter Pinterest Email Price Alert 96. • HARDENED STEEL BACKS on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing. 001in Oil Clearance $399. Index Explanation A Counterweights 1 Main bearing journal 7 2 Oil hole from big-end bearing to main bearing 3 Oil hole from main bearing to big-end bearing 4 The cost was less than half. King Engine Bearings was founded in 1960 with one simple objective: to supply the highest quality bearings available in the marketplace - USP M N55 Crankshaft Crankshaft Main Bearings As on the N54 engine, the main bearings on the crankshaft are designed as two component bearings free of lead. BMW part number 11118518864. This item is not on the shelf at Hack Engineering, but your order will be processed and delivered as quickly as possible. King Engine Bearings was founded in 1960 with one simple objective: to supply the highest quality bearings available in the marketplace - USP Motorsports is a leader in auto parts for Volkswagen, BMW, Audi & Porsche. I'm nearing reconstruction now and wanted to start a thread to show progress, seek advise and encouragement as I'm sure I'll need plenty. 4% positive ; Seller's other items Seller's other items; Contact seller; £145. ENLARGED ID CHAMFERS on bearing edges where required to accommodate large fillet radius on performance crankshafts. Tapered groove run-out. No matter if it's yellow, green, or red they're all 56. I decided to get a very low mileage engine replacement put ACL STANDARD SIZE HIGH PERFORMANCE ROD BEARING SET BMW N54 / N55 / S55. Sump bolts. Engine details are: N54B30 2979cc Inline 6 Twin Turbo N55B30 2979cc Inline 6 Turbo S55B30 2979cc Inline 6 Twin Turbo New part numbers are: 7M1397H-STD 7M1397H-. So I tried to just replace the bearings by sanding the journal a little bit in circular Availability: Reserve for delivery. 6%. Main bearings are assigned on the engine block and the crankshaft itself. MFG PN: MB7776GPC. Drock3d New Member. 001" Extra Clearance Brief content visible, double tap to read full content. or Best Offer. 0L - Main Bearing Set SKU: 7M1397H-STD. But it won't be used for a while, so it looks like the winter project is sorted. ACL bearings WHY am I going with aftermarket main bearings? Well, that’s a very good question with a few answers. From £12. The new N55 engine has one exhaust pipe the feeds from all 6 cylinder (for less fuel consumption) while the N54 had 2 pipes, one feeding from cylinders 1, 2, and 3 and another pipe feeding from cylinders 4, 5, and 6. -JE Forged Pistons BMW N54B30 85. 0 PETROL 1 3 SERIES F20 ACL - $294. 5 3. ACL BMW N54B30/N55B30 3. Once you return the old part you will be refunded for your core charge, details regarding the return will be BMW’s N55 took over from one of the most revered engines to come out of Bavaria. TIGHT CONSISTENT WALL TOLERANCES to help you maintain consistent clearances. It is obviously an engineering flaw. The bearing material is specially manufactured for higher loads and has a reinforced contact pressure. Free Shipping . These bearings have been treated with a process that not only makes the grain structure in the The N55 CarBahn engine is designed to improve the strength of your engine if you are tuning your car. 7 watchers. Facebook Twitter Pinterest Email Price Alert 399. By specializing in engine bearings, King has built an extensive product offering that includes a wide range of engine bearings for automobiles, light duty and heavy duty trucks, marine, aviation, standby power Enhance your BMW N55 engine's performance with King Engine Bearings' Main Crankshaft Bearings. Main Bearings with Extended Grooves Full (180°) grooved uppers with matching partial groove in lowers. Registered as a business seller. Bimmerpost ☰ Model Selection. Every spin or $1 spent = 1 entry!!! . Open menu Open navigation Go to Reddit Home. Index Explanation A Counterweights 1 Main bearing journal 7 2 Oil hole from big-end bearing to main bearing 3 Oil hole from main bearing to big-end bearing 4 BMW 6 cylinder 2. Add to Wish List Add to Compare. C $658. Get app torque specs/sequence on N55 eccentric shaft + bearings? Share Add a Comment. BMW N54/N55/S55B30 INLINE 6, ACL Race Series Main Bearings (7M1397H) Engine: N54, N55 B30 / S55 B30: Make: BMW: Delivery & Freight. The upper bearings are designed with an oil lubricating groove. 00. F40Model Year: 2019 + Previous Generations; F20 / F21Model Year: 2012 - 2018. or Best Offer +C $46. 25mm 3. Any advice He didn't agree with me and told me the n54 is more reliable as the n55 experiences bearing failures and he had done plenty of those bearings himself. 002˝ inches of oil clearance for a 2-inch diameter shaft – but these numbers will vary with the oil viscosity and application. 0007˝ to . Select options This product has multiple variants. Once you return the old part you will be refunded for your core charge, details regarding the return will be 10 N55Engine CurrentModels N54B30O0enginevariants *TheenhancedenginemanagementsystemoftheBMWZ4sDrive35isandthe335isinclude N55 Reliability (rod bearing problems?) - Page 21. ACL bearings are used for tuning and engine upgrades where you want better quality with higher bearing capacity than Well I’m sure you’ve done the research as well but I’ve done all the research on the N55 rod bearing problems and it seems as if though everyone blows em up. Also, press the 🔔 ACL BMW N54 / N55 / S55B30 3. Price each: $730. Facebook Twitter Pinterest Email Price Alert 251. 025mm extra clearance as well as oversizes for reground cranks (0. $269. The first piston ring is a plain rectangular compression ring with a chrome Why is the N55 more reliable than N54? The main difference is the exhaust. All items shipped internationally are sent express air freight unless otherwise instructed. On these engines it must be paired with the matching Yellow upper bearing shell. Product Overview. Engine Main Bearing Kit - Standard Size Genuine BMW front main seal for the N52, N54, N55 and S55 engines. I'm assuming with 4 of your bearings damaged that the motor was BMW N55B30 N55 MAIN AND BIG END BEARING SIZE STD 3. 0L, BMW E61 535xi N54 3. Our coated bearings are thermal breakdown resistant, helping to prevent As on the N54 engine, the main bearings on the crankshaft are designed as two component bearings free of lead. ACL 3. Typically, an engine builder might add . 2:1, rally motorsport forged pistons and rods. Loading Sign in to see your user information. 0L Standard Size High Performance Rod Bearing Set Carrillo Conrods for 6 cyl BMW N55 Pro-H 3/8 bolt Block Clearancing May be Needed ACL Race Series Main Bearings - STD, 0. Improvements of material, dynamic thickness, heat conduction, oil grooves and oil distribution are some of the points that make ACL one of CLICK HERE FOR INFO ON MAIN BEARINGS and CLICK HERE FOR INFO ON ROD BEARINGS So I tried doing some research and based on the parts diagram on realoem, the main bearings are 56. New. Was: C $1,086. Rodyti: Rūšiuoti pagal: BMW 3. 25mm; ACL Race Series Big End Bearings - STD, 0. Skip to main content. King Fits BMW N55B30A/N53B30A/N52B30A (Size STD) Main Bearing Set . Standard Size 2X Entries For Holiday Spin To Win Sweepstakes! Brand: ES#: 4621435 Mfg#: ACL7M1397H-STD Qty: Availability: In Stock $251. 2:1 (S55)/li> Bore Sizes: STD and 84. BMW N55 Main Bearings. More Info. 0 PETROL MAIN BEARINGS CRANKSHAFT SIZE 0. 5mm a ; Pistons come with rings, gudgeon pins and pin locks; Carrillo 1- Oil Spray Nozzle Testing and Installation2- Piston Rings Installation3- Weigh Rotating Assembly - Piston/rods/rings/bearings4- Dry Fit Crankshaft - Main O Racing bearing shells for all BMW N54, N55 and S55 engines. Engine Main Bearing Kit - Standard Size We are bearing specialists. View cart for details. • HARDENED STEEL BACKS on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the ACL BMW N54/N55/S55B30 3. 0L Inline 6 Part Number: 6B1584HX-STD Suffix: HX Denote: Race Series . 0003” per shell or . Apparently it has a much higher load capacity and is coated in case of oil starvation. Sort by: Best. Add to Cart. Lifetime Replacement. 95 . Second Lieutenant . Previous. 25: Main Bearings - Amazon. Re: King Performance BMW N54/N55 Rod Bearings - 2 Pairs. Improvements of material, dynamic thickness, heat conduction, oil grooves and oil distribution are some of the points that make ACL one of BMW N55 Engine Rebuild Tools: https://amzn. 00MM. 0L, BMW E60 525xi N52 3. Only a few BMW SUVs N55 Crankshaft Crankshaft Main Bearings As on the N54 engine, the main bearings on the crankshaft are designed as two component bearings free of lead. As required when replacing your crank hub or during other remedial work. You can This is why BMW uses different color bearings and why a set of builders bearings shouldn't be used without machining the crank for a custom fit. The number corresponds to the lower bearing shell: 4 = blue, 5 = brown, 6 3/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings. Buy ACL Race 0. 2X Entries For Holiday Spin To Win Sweepstakes! Mfg Part # ACL7M1397H-STD ECS Part # ES# 4621435 Brand. ACL Race Part Number 7M1397H/STD-ACL BMW S55 / N55 / N54 - M135i / M235i / M2 / M3 / M4 Hey guys and welcome back to the BMW N55 engine rebuild project. What should you do immediately to prevent further damage to the engine? If you think that your BMW N55 engine has a bad rod bearing, the smartest decision is not to wait and take your car to a qualified BMW mechanic or Fits:BMW N54 N55 S55; Size: Standard; ACL Race Series performance engine bearings are manufactured to exacting tolerances with particular attention paid to wall thickness accuracy. This is my first attempt at rebuilding an engine. ACL BMW N52/N54/N55/S55B30 3. King Engine Bearings was founded in 1960 with one simple objective: to supply the highest quality bearings available in the marketplace. Advanced: eBay Deals; Find a Store; Help; Sell; Watch List Expand Watch list. Yes not priming Home / King Bearings - BMW N55 B30A / N53 B30A / N52 B30A Main Bearing Set. Funny thing though all lower bearings seem to have the same part number so I am even more confused! I checked on BMW parts, it seems both green and yellow King Performance BMW N54/N55 Rod Bearings - 2 Pairs. 3/4 GROOVED MAIN BEARINGS to optimize bearing load carrying surface area and oil flow to the conrod bearings. Brand New. Locate a letter code on the passenger side of the engine block and combine that with a number on the front of the crankshaft. 50mm Bore 367878 1,089. In this video we install a piston, new main bearings, new crankshaft and seal the bedplate. Only a few BMW SUVs ACL BMW N54/55 S55 Race Main bearings. BMW N55 Connecting Rod Bearing Kit - 6B1584HSTDKT 135i, 135is, 335i Save for later Available Ships in 1 business day. Skip to main content . Auto stop/start could be part of it, bad filters, bad oil, too long of intervals, beating on it when cold, etc. Item is IN STOCK, order now and will ship out within 1 business day! BMW N43 N43B20 2. 75 3 COUPE E92 1 E81. Qty: Add to Cart. My eBay Summary; Recently Viewed; Bids/Offers; Watch List ; Purchase History Important Bearing ID Note: BMW has a different way of identifying S55 main and rod bearings. 0 N54B30 N55B30 BMW N55 Connecting Rod Bearing Kit - 6B1584HSTDKT 135i, 135is, 335i Save for later Available Ships in 1 business day. Mfg Part # CR222GPC ECS Part # ES# 4755722 Brand. I decided to get a very low mileage engine replacement put I'm one of the victims of the rod bearing failure. 0 20 40 60 80 100 120 140 160 180 200 220 King Bearings Main Bearing Set (SI) For Bmw N55 B30A, N53 B30A, N52 B30A. I may need over-sized rod bearings for this piston, but not sure which size to get. Main bearing journal 7 2 Oil hole from big-end bearing to main bearing 4 Big-end bearing journal, cylinder 4 3 Crankshaft Main Bearings Oil hole from main bearing to big-end bearing As on the N54 engine, the main bearings on the crankshaft are designed as two component bearings free of lead. Select the department you ACL BMW N52/N54/N55/S55B30 3. 1. Rating * Name Email * Review Subject * Comments * $170. Index I'm going to preventatively replace my 72K N55 rod bearings - Page 3. To LIKE 👍, COMMENT 💬, SHARE 📤, and SUBSCRIBE to our channel for more videos. Just a possible explanation for other bearing stories. 0026” total clearance variation possible due to mating part manufacturing tolerances. We aim to provide accurate descriptions of all goods . Helping to prevent premature engine failures on street cars, and spun bearings under stress at the track when things are most critical. These are for upper main bearings. Quick view Add to Cart (0) ACL. 25mm Oversized. 93. N55 Engine. BMW N55 Engine Rebuild Project Part 2 – Piston, Crankshaft and Main Bearings Replacement. 2007 BMW 335i Engine This Genuine BMW Engine Crankshaft Main Bearing Cap Bolt (Mfg#11117589711) fits BMW E60 525i N52 3. 0L, BMW E60 530xi N52 3. Free shipping . RACE Series rod and main bearings are standard components in Race engines that have set records and won championships from Mexico to Bonneville - from sport compact drift racing to small block NASCAR, IHRA and NHRA cmpetitions. 0L Inline 6 RACE Series Engine Crankshaft Main Bearing Set SKU: ACL7M1397H-. E81 / E82 / E87 / E88Model Year: 2004 - 2011. Same goes with the colors for the rod bearings via THIS LINK (yellow, violet, red, and blue) Main Bearings with Extended Grooves Full (180°) grooved uppers with matching partial groove in lowers. Enlarged ID Chamfers Accommodate larger fillet radii on performance crankshafts. AUTOTO World (519) 96. 25 Quantity (0 in cart) Decrease quantity for KING BMW N55 E82 E90 F10 F30 Standard Size Main Bearing Kit (Inc. Performance Coated Main Bearing Set for the N55 Engine - Std. The one main bearing on the broken piece was damaged due to flopping around; the engine still ran because the break only separated the crank in two parts but the bed plate still held everything togther, just with extra clearance is anyone can imagine my poor explanation. There was glitter in my oil filter. Mains feature enlarged, chamfered oil holes. 0L, BMW E70 X5 N52 3. 0L, BMW E60 535i N54 3. FOR SALE! 1 Series N55 B30 A 2979CC Petrol 2012. E90 E92 M3 Throttle Actuator Fault for the S65 V8 . 0L (For: BMW) Opens in a new window or tab. The letter corresponds to the upper bearing shell: D = blue, E = brown, F = purple. I’m into this project! Reply I got calico coated king rod bearings and king main bearings. From what I read, these should be really good. Oil pump bolt. Facebook Twitter Pinterest Email Price Alert 549. Facebook Twitter LinkedIn Whatsapp Email. The lower main bearings must be decoded from a string of letters on the first counterweight of the crankshaft - 1 = Yellow (11217627033) 2 = Green (11217627034) 3 = Red (11217627035) I spun a bearing it was an n54 not 55 but there was nothing on my magnetic plug. King makes various different models of bearings to cover every possible application. 5mm). Rod bearings fail for many reasons; mostly, due to oil starvation which causes them to - Front Main Seal - Rear Main Seal - Valvecover itself These are likely places for oil to leak, and these are proverbially common on the N55. Appreciate 1 tranck 504. 99 / Unit) or Best Offer. M135i, 335i, 535iX & 740i) Our N55 rod bearing replacement services consists of all labour and the below parts: Sump gasket. The thrust bearing is mounted at the fourth bearing This is the complete set of upper and lower main bearing shells for M20, M42, M50, M52, M44, M54, S50, S52, S54 engines that have had the WPC surface treatment. Be sure to review the info below to get all the details on n55 rod bearing question. 4% positive; Seller's other items Seller's other items; Contact seller; GBP 46. 025 7M1397H-. Availability: In stock. • 3/4 GROOVED MAIN BEARINGS to optimize bearing load carrying surface area and oil flow to the conrod bearings. The thrust bearing is typically in the middle. Lifetime Replacement This is a single standard size (56. The options may be chosen on the product page Quick View. 0L, BMW Our N54/N55 bearings are embraced by BMW engine builders world wide. 15 $ VAT excl. 00mm) lower main bearing for a un-machined crankshaft. The rod bearing failure ended causing a cascade of issues (metal everywhere, etc). ACL’s race-winning bearings are the key to maximum reliability and longevity from your BMW’s engine. What causes N55 rod bearing failure? Rod bearing failures on the EWG N55s are rare. 600 / 53. TECH NOTE: Not all King bearing applications are available in the race For BMW N54 / N55 / S55 Engine. Add to cart. Whether its for a full rebuild or some standard I took apart my n55 pwg to redo the bedplate seal and preventative rod bearings. Reply AwkwardBaloon '07-E90-335xi | '07-e93-328i Skip to main content. Only 2 left . Standard Size w/ Extra Oil Clearance Main Bearing Set by ACL ACL RACE Series performance engine bearings are recognized as a premier brand throughout the motorsports world. Lead Time: Generally 3-5 days or 2 weeks (supplier dependent) when not in stock SKU: 6B1510H Categories: ACL Bearings, F32/F33/F36, F20/F21, F22, G22/G23/G26, G29, Engine Components, F30/F31/F34, G20/G21/G28, Toyota N54 N55 S55. We just installed a MSL 48-60 turbo and comfortably making 500whp. Free Shipping. Home. Anyone here who owns an n55: can you please share your experience with me and may I ask if any of you n55 owners had experienced bearing failure yourself? Thanks! comments sorted by Best Top New ACL BMW N52/N54/N55/S55B30 3. same question with the rods. 0L, BMW E60 528i N52 3. Standard (STD) Size Standard (STD) Size with . It had a spun bearing when I got it (cylinder number 6). They should be marked King Fits BMW N55B30A/N53B30A/N52B30A (Size STD) Main Bearing Set . BMW recommends hardware replacement when the main bearing cap is removed for service. After doing more digging it seems there are a lot of people not recommending ARP rod N55 3. Tech info: Tunnel (mm) 53. BMW S55B30 2979cc Inline6 DOHC 4v Twin Turbo. I plan to swap identical OE bearing shell combos: Greater rod bearing height improves bearing-to-bore contact/heat transfer and reduces spin potential at high RPM. Rep. The bimetal bearings usually have a steel In a typical BMW engine there is a main bearing for each cylinder plus one more for the thrust or guide bearing. And do mind the workmanship when working on these. Do a simple search N55 OHFG rod bearing- have fun reading. Bearing Size. 0L, BMW E60 528xi N52 3. 0010” for the shaft + . Tight consistent wall tolerances to help you maintain consistent clearances. 28) SKU: KB-MB7776GPC . It simplified shortcomings and improved upon a winning formula to become a ACL BMW N54/N55/S55B30 3. BMW N52B25AE. Locks the bearing into the housing. N20/N26 uses 10 bolts N51/N52/N54/N55/S55 uses 14 bolts Fits:BMW N54 N55 S55; Size: Standard; ACL Race Series performance engine bearings are manufactured to exacting tolerances with particular attention paid to wall thickness accuracy. • Reduces interruption to big end oil supply. BMW N43 N43B20 The “next generation” of high performance bearings for use in applications where traditional lead copper race bearings are at their limits. 01. A full slipper skirt type piston with a diameter of 82. Based on this I should The ACL N54 Race Series High-Performance Rod Bearing Set is a premium upgrade designed specifically for BMW N54 engine models. 001˝ of clearance for every inch of crankshaft journal diameter, or . I have all the new parts anyway for a spare engine, so we'll just use them. Know that if you do the main caps, you are probably dropping the engine because you probably need the ACL BMW N54/N55/S55B30 3. Mfg Part # 5150-HPRBS-N55 ECS Part # ES# 4759217 Brand. In this video, I go through the process of replacing the rod bearings with the engine out, but the process is exactly the same once you have access, although maybe not nearly as comfortable. Over $15,000 in prizes. Lifetime Replacement 5150 High Performance Coated Main Bearing Sets are made for the demands of high performance engine builds. If you think you actually have a spun bearing and are willing to bank on it, DO NOT START THE ENGINE AGAIN - get that oil pan off and pull the rod caps first to look for anything spun, and if you don't find anything repeat with the main caps. JE Pistons Ultra Series BMW N54B30 22mm Pin 9. 99. The bearings had not spun over one another. Free shipping. BMW Comes with 2 pairs Picture for representational purposes only. The reason my N55 spun its rod bearings is because after an OFHG job, I didn't torque the bolts to spec (best to admit that I forgot to torque it down). $156. You can Find many great new & used options and get the best deals for N55 Main Bearings Guide Set For BMW 125i 128i 335i 740Li X3 X5 N52 N54 Z4 3. Upper main bearing assignments for positions 1-7 can be found on the engine block (code letters A, B, or C), while The bimetal bearings have been mainstream for general purpose engine use and has very excellent wear resistance than the trimetal bearings in a low horsepower use scenario. 79. Top. Quantity: 2 available. 0006” for the bearings = . The N55 CarBahn engine is designed to improve the strength of your engine if you are tuning your car. 0L Inline 6 RACE Series Engine Crankshaft Main Bearing Set. Re: King main and rod bearings marked STDX. This all-inclusive kit is an upgrade over OEM, featuring advanced Calico-coated rod bearings that provide consistent lubrication, even under the extreme demands of high as both rod and main bearing housing bores. Core charges are assigned to parts that have reusable components by manufacturers to encourage the return of the used units. 03. Approximately US $61. ACL RACE Series performance engine bearings are recognized as a premier brand throughout the motorsports world. Reply reply More replies More replies More replies. Controversial. Current - Front Main Seal - Rear Main Seal - Valvecover itself These are likely places for oil to leak, and these are proverbially common on the N55. We can also add the MMX sump baffle to this Important Bearing ID Note: BMW has a different way of identifying S55 main and rod bearings. to/37W6GsSKing Bearings: https://amzn. Posted on November 14, 2021 by SimpleCarGuyAdmin. SOLD PER: SET. It looks like the #1 rod bearing was getting starved of oil. 025 or 0. 25mm Oversized provides an exceptional upgrade for enhancing engine performance and BMW N20 N52 N54 N55 Connecting Rod Bearing Set of 2 Pairs - 0. Rod bearing failure in the non-M N55's were a lot in part due Want to build the fastest N55/S55? King mains bearings will give you the strength and low friction needed to build a reliable high power engine. 91 for 12 months with PayPal Credit * Condition: New New. The N55 engine is far easier on its bearings than the S54 or S85, but owners are now becoming concerned wi Hey guys and welcome back to the SimpleCarGuy Channel. ACL BMW N54B30/N55B30/S55B30 3. You should be fine getting 150k+ miles out of it as long as you perform regular maintenance Rod bearing issues were mainly a concern in the S65 engines that came in the e92m3. us. Size. Regular price N55B30A Engine Crankshaft Main Bearing Con Rods Set for BMW 535i X3 X6 3. Contact us today! (239) 270-5116 sales@drifthq. Standard Size. Quote 06-10-2020, 11:21 AM #3: Endeav. MAHLE Motorsport Bearings Clearance Study. com. After a spun rod bearing on my 335 and a complete engine swap, I decided to rebuild the original engine. bielas forjadas. 00 BMW 3. BMSAUTOMOTIVE (544) Business Registered as business seller. €209. 1 Series N55 B30 185879571776 Skip to main content. GPC Race Bearings combines a unique Silver Based tri-metal structure with advanced factory applied Polymer Coating to give a bearing with the highest load bearing capapcity on the market. Improved Oiling. Vehicle Fitment: 2016-2018 BMW M2 (F87) (N55 Engine) Purchase Includes: 1 Set King Main Bearings Important Bearing ID Note: BMW has a different way of identifying S55 main and rod bearings. The reason I mention this is because the process is different on newer engines and if you’d like to see what that process is like, check out my video on the BMW N20 injector replacement as it’s exactly the same. E81 / E82 / E87 / E88Model It's got the N55. Enquire Now Marijke booth. Reactions: fredcase and 9krpmrx8. to/3bqRXrR Part Number I ordered: CAL-CR222SV This part is listed by BMW as BMW part number 11117589711 (11-11-7-589-711) and is described as Genuine BMW Hex Bolt for Main Bearing Cap on N20, N26, N51, N52, N54, N55, and S55 Engines. Quick view (0) ACL. 08. If anyone else has experience with rebuilding the N55 engine, please acl7M1397H-STD - ACL 3. At this point this motor variation has been around for 10+ years. Mfg Part # 5150-HPMBS-N55 ECS Part # ES# 4759214 Brand. 0L sont sur eBay Comparez les prix et les spécificités des produits neufs et d 'occasion Pleins d 'articles en livraison gratuite! When using a King STDX bearing to set clearances, do I want to put the thicker of the two bearing halves in the block, or the main cap. New Member. 259. I will use plastigage to check the clearance, but don't have the clearance tolerance specs for this engine. I am in search of the failure point. Rod bearings fail for many reasons; mostly, due to oil starvation which causes them to overheat and spin on Down and dirty no frills rod bearing tutorial. With that said, with your mods, you are pushing the safeguard limits of the N55. For BMW N54 / N55 / S55 Engine. Shop King Engine Bearings at great prices, fast shipping, and 0% financing! Find many great new & used options and get the best deals for King Engine Bearings MB7776SI MAIN BEARING SET For BMW N55 B30A, N53 B30A, N52 B at the best online prices at eBay! Free shipping for many products! This King Connecting Rod Bearing Set of 2 Pairs - Std. Track & Share . 17. Connecting rods are replaced with Carrillo forged racing rods, pistons are CP forged racing pistons, CarBahn Pined crankshaft, full circle thrust main bearing and performance valve springs for increased boost pressure. 025 ⓘ This sku has been copied to your clipboard! Get the best deal with our price match guarantee. $49. I went ahead and ordered ACL bearing STD + ARP rod bolts. They also said they are seeing more and more of the N55 rod bearings fail. 0 N54B30 N55B30 S55B30 ACL Race connecting rod bearings 6B1584HX-STD . Attached I have pictures of the main bearings. The thrust bearing is mounted at the fourth bearing position. ⁠@BimmerHausPerformance #n20, #n52, #n54, #n55, #s55, #m57, #n57, #n62, Crankshaft Main Bearings. Upper main bearing assignments for positions 1-7 can be found on the engine block (code letters A, B, or C), while Main bearings are assigned on the engine block and the crankshaft itself. Further information. Technical Information Laser Marking Recently had my bearings replaced after noticing a good amount of glitter in the oil. Open comment sort options. Les meilleures offres pour main & con rod bearings For BMW 335i 535i 640i 740i x3 x5 x6 N54 N55 3. Buy It Now. MAP. Index Explanation A Coun terw ighs 1 M ai nbe rgjou l7 2 O ilh o ef rm b g- nd at 3 O ilh o ef rm a nb gt - d 4 B ig- endb a rjou l,cy 4 Most rod and main bearings run best with . bisnexu • Rod bearing issue is causing by cold weather and lack of oil changes,+ not letting engine warm up. As a preventive measure I am replacing the rod bearings, it would appear the early production N55 may have issues with the rod bearing manufacturing. 025mm, 0. Rod bolts. Hey guys and welcome back to Part 2 of the BMW N55 Engine Rebuild Project. Enlarged ID chamfers on bearing edges where required to accommodate large ACL Race Main Bearings (N54/N55/S55) 0 out of 5 £ 247. Hi and thank you for the information. Be the first to review this product . ON SALE $275. They took my engine apart and found the rod bearing had gone bad but can't specify why it happened. €249. Details. on orders $49 and up. Click to expand Tap to zoom 3/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings. com FREE DELIVERY possible on eligible purchases. 2. Car has 65k on it when this happened. Fits for BMW 2. Available in standard size, HX for 0. The number corresponds to the lower bearing shell: 4 = blue, 5 = brown, 6 KingTec Racing custom forged internals for BMW E90 E91 E92 E93 335i E82 E88 135i F10 F11 F07 535i, fit for N55B30 3. I was going to order king MB7776SI to As we all know, bearing replacement is a pretty common maintenance procedure in S65 and some other BMW engines. €243. 22 CAD Unit price / Unavailable. After doing more digging it seems there are a lot of people not recommending ARP rod N55 Crankshaft Crankshaft Main Bearings As on the N54 engine, the main bearings on the crankshaft are designed as two component bearings free of lead. With that said I've seen several people with n55 that spun bearings after turbo upgrade. Oil pump strain Oring. My X5 already had the bearing noise which I only noticed a day after I bought it. Reply reply (also bad injector) only one N55 with a seized main bearing where the customer admitted it seized during a donut session. r/BmwTech A chip A close button. The engine is a complete Not sure where we communicated about lack of damage to the main bearings. Turbo Engines: this is the lower bearing shell in N20, N26, N54, N55, and S55 BMW turbo engines. Index Explanation A Counterweights 1 Main bearing journal 7 2 Oil hole from big-end bearing to main bearing 3 Oil hole from main bearing to big-end bearing 4 Tag: n55 main bearing. Treated shells and coated by Calico to reduce Performance Main Bearing Set - N55. Size Brand: ES#: 4759214 Mfg#: 5150-HPMBS-N55 Qty: Availability: Ships in 4 Business Days $549. 99 CAD $520. cgarb Guru Posts: 2044 Joined: Wed Jul 09, 2014 3:50 pm Location: Maryland. All MAHLE Motorsport bearings are laser marked. They're worried about residual metal shavings getting embedded in the new bearings and causing a problem. This product is backed by our Lifetime This is now vehicle number 7 rod bearing failure I have had to deal with at my shop. 0L - Main Bearing Set; Loading 23% off 23% off ACL BMW N54 / N55 / S55B30 3. 616 item 7 ACL Race STD Size Main Bearing For BMW N54 / N55 / S55 3. 0L SUPERTECH SPRK-FE20N54-BE Conical Spring 992. 0 20 40 60 80 100 120 140 160 180 200 220 If you think you actually have a spun bearing and are willing to bank on it, DO NOT START THE ENGINE AGAIN - get that oil pan off and pull the rod caps first to look for anything spun, and if you don't find anything repeat with the main caps. 0 N52 N53 N54 N55 S55 Mahle main bearings Mahle Original main bearing kit. 0L 7M1397H-STD: Main Bearings - Amazon. Traditional stamping can cause bearing distortion and prevent efficient heat transfer to the housing leading to failure. Condition: New New. 0L, BMW E60 530i N52 3. Since the original engine had Description ACL Standard Crankshaft Main Bearings Fits BMW N54/N55/S55B30 3. 0L Standard Size High Performance Rod Bearing Set Choose Brand > BMW > M2/M3/M4 S55 > ACL BMW S55 / N55 / N54 – M135i / M235i / M2 / M3 / M4 Standard Size Performance Main Crankshaft Bearing Set. Such as,the car gets low on Performance Coated Main Bearing Set for the N55 Engine - Std. on orders $49 and up Pretty sure the rod bearings in the M2 N55 are the same. Prices from £900. The fix is the S55 oil sump parts swap. Compatibility: See compatible vehicles. 0L, BMW E61 530xi N52 3. 2AZ Main bearing screws Replace main bearing screws Do not wash off coating on main bearing screw M70/S70/M73/M52 With cast aluminium engine block Torque 20 Nm Torque angle M10 70 ° M60/1/M60/2/M62 Torque 20 Nm Torque angle on engines with M10 main bearing screws M10 70 ° Torque angle on engines with M11 main bearing screws M11 100 ° Main The N55 features several much-needed improvements over the issue-plagued N54. The Yellow/Red pairings are known as "R Classification" (a Violet/Blue pairing Hey guys and welcome back to the BMW N55 engine rebuild project. We are an Australian based company which ships items nationally and international usually within 48 hours of receiving your order. Hit me up on instagram for questions. What are your thoughts. or as low N55 main bearing issue? Hi everyone, I decided to preventatively replace the rod bearings because: - it's usual issue (130 000km) - occasional engine knocking at ~2000rpm (cold engine in winter) - silver metal shavings in oil filter So I removed subframe, oil pan, rod bearings - but they were without any sign of excessive wear, so it seems this is not the cause of the Performance Main Bearing Set - N55. Read Product Details. RACE Series rod and main Description ACL Standard Crankshaft Main Bearings Fits BMW N54/N55/S55B30 3. Note: my number one rod bearing was completely worn but all other rod bearings looked brand new. 0L 7M1397H-STD ACL Race STD Size Main Bearing For BMW N54 / N55 / S55 3. 28 39% off. Sponsored. Best. Rod bearings fail for many reasons; mostly, due to oil starvation which causes them to overheat and spin on Hey guys and welcome back to the BMW N55 engine rebuild project. ACL/VAC Motorsport bearings. 5) For Bmw N55 B30A, N53 B30A, N52 B30AWe are bearing specialists. 99 Add to Cart. Standard Size Brand: ES#: 4755722 Mfg#: CR222GPC Qty: Availability: In Stock $96. New Turbo Crankshaft for BMW X1 X4 X5 N55 135i 335i Order the King Engine Bearings - King BMW N55 B30A/ N53 B30A/ N52 B30A (Size STDX) Main Bearing Set MB7776GPCSTDX at Vivid Racing. After polishing the spun rod journal, it's measured 0. The number corresponds to the lower bearing shell: 4 = blue, 5 = brown, 6 Home ACL BMW N54/N55/S55 RACE Series Rod Bearing Set – 6B1584H-STD. 0 N54 N55 S55 7M1397H quantity. 5:1 84. Lower main bearings are red for both. A brand-new, unused, unopened, undamaged item in its original packaging (where Hey guys and welcome back to the BMW N55 engine rebuild project. bmcecosse Minor Maniac Posts: 46561 Joined: Wed Feb 16, 2005 11:24 pm Location: ML9 MMOC Member: No. In addition, it allows customers to return new and unused products in their original factory condition for any reason within 30 days from the date of purchase. 3 2. Improved bearing retention from higher radial contact pressure. BMW N55 Engine Rebuild Tools: https://amzn. Enter your search keyword. And if my bearings look like this and I never go over 3k rpm’s like ever (like 10 times a year) and I daily it! Then shit it’s a real problem. Is that normal as well? 87k mile pwg n55 Says the applications are for N54, N55, N52, S55, N20, and N26 engines. 0L, BMW E60 535xi N54 3. The MMX Sump Baffle can be added on at an additional cost. Today we are installing injectors on my BMW N55 engine with an early production date. I'm assuming with 4 of your bearings damaged that the motor was n55 rod bearing question. Best Selling in Engine Bearings. Charming-Mode6232 • I used 8NM. At Bimmerforums, you will find technical how-to information maintenance specifics audio advice wheel and tire combinations and model specific details not found anywhere else. Take note of how many of the reported failures are in pre-2014 N55s which are PWG cars. 0 N54B30 N55B30 S55B30 ACL Race Series main bearings 7M1397HX-STD. 50. The shell is the bottom half of the bearing and fits in the connecting rod bearing cap. Connecting rods . Since the original engine had chunks the size of my fist, yet still somehow ran, I bought another engine on Facebook marketplace and that’s the engine we are working on today King Bearings Main Bearing Set (Size +0. 0 engines N52, N53, N54, N55, S55 . Our bearings can withstand higher loads than normal series bearing shells. $259. 0L Race Series Standard Size Conrod Rod Bearing Set W/ Extra Oil Clearance . Race Series rod and main bearings are ACL Race Series Main Bearings for the N54, N55 and S55 engines, as found in E/F Series 135i, M135i, M235i, 335i, 435i, 535i, 635i, M2, M2 Competition, M2 CS, and M3/M4. 0L Engine Crankshaft & Connecting Rods w/ Main & Rods Bearings Set For BMW. All parts are Genuine BMW apart from rod bearings. to/3uHUwh5 Parts: https://amzn. First, these seem to have a better reputation with people that have rebuilt I decided to preventatively replace the rod bearings because: - it's usual issue (130 000km) - occasional engine knocking at ~2000rpm (cold engine in winter) - silver metal King SI-Series bearings are recommended for OE applications. Priced per engine set Bimmerforums is the preferred online BMW Forum and community for BMW owners. My eBay Expand My eBay. Engineered with precision and durability in mind, these rod bearings offer enhanced 2010 2011 BMW 5 Series Forum F10 BMW 5-Series (F10) Forums General 5-Series Sedan and Wagon (F10 / F11) Forum High mileage n55 rod bearings and failure Post Reply Thread Tools: Search this Thread 11-26-2023, 01:37 PM #1: LoganN55. Technical Information for Bearings. 0005 inches of additional clearance for a performance motor over what he Coated Race Bearings is het adres voor krukaslagers, drijfstanglagers, axiaal lagers van ACL, KING, Kolbenschmidt, Glyco en coatings only! BMW N20 N52 N54 N55 Connecting Rod Bearing Set of 2 Pairs - 0. 25 mm OverSize Main Bearing Compatible with BMW N54 / N55 / S55 3. 0L at the best online prices at eBay! Free shipping for many products! The price for an N55 rod bearing replacement kit varies from $200 to $500, which is still much cheaper than replacing the entire engine block. We are bearing specialists. IMO, they don’t look bad enough to be leaving all this glitter in the oil, but what do you guys think? And I don’t know too much about wear on the backside of the bearings, but they seem pretty worn down. Know that if you do the main caps, you are probably dropping the engine because you probably need the King Bearings Main Bearing Set (SI) For Bmw N55 B30A, N53 B30A, N52 B30A. Most upgrades fixed the previous engine’s chronic issues, making the N55 far I damaged a rod bearing a little over a week ago in my N55 but two BMW mechanics that I trust have told me it's not a good idea to replace the bearings once you have a knock. 0L 7M1397H-STD. 25mm; Pistons are available in: Compression Ratios: 11:1 (N55), 10. Technical Information Laser Marking Ask any BMW tech as well. Actual product may vary slightly. 754. Next. What should you do immediately to prevent further damage to the engine? If you think that your BMW N55 engine has a bad rod bearing, the smartest decision is not to wait and take your car to a qualified BMW mechanic or Je bekijkt nu: BMW N52 / N54 / N55 /S55 Hoofdlagers Main Bearings MB7776SI € 85,00 Oorspronkelijke prijs was: €85,00. Our professionals are here to help make sure you find the answers you need to your questions and Our High-Performance Rod Bearing Kit is the ideal solution for replacing the factory BMW N55 rod bearings, offering enhanced reliability and longevity. ACL bearings are used for tuning and engine upgrades where you want better quality with higher bearing capacity than normal standard bearings. 0015˝ to . I'm still not sure what happened exactly but my theory is that when my belt slipped because of the OFHG leak, the belt was sucked into the front main which then sucked into the oil pickup tube and the engine lost oil pressure for a slight moment which caused 2 of my bearings to spin. ACL BMW N54/N55/S55B30 3. The Yellow/Red pairings are known as "R Classification" (a Violet/Blue pairing We offer ACL bearings for the N55 rod bearing replacement service. I polished out the bearing caps before I installed the new cam but this old cam tells me my car was run low on oil at sometime and had some starvation which led to a spun bearing. Main bearings are subject to high wear and should be replaced regularly. And the car made it Something went wrong. Like you said, when they fail in the EWG N55s, it’s usually because of high lateral sustained Gs during track driving. Fitment: BMW 335i. BMWs and rod bearings have a complicated history. All Collections . ACL STANDARD SIZE HIGH PERFORMANCE ROD BEARING SET BMW N54 / N55 / S55. A full slipper BMW N54/N55/S55 High Performance Connecting Rod Bearings by ACL. Add to Wish List. 99 (£145. Nov 3, 2018 5 1 0 Ride 335is/650i GC Jan 7, 2019 #4 This is the journal that had the bearing fail, this measurement is right before final polish. 0L 7M1397H-. Customized connecting rods forged conrod 4340 steel . 0006” in total. Shipping Number 6 piston has rod bearing spun. Started from the middle, alternating sides, moving towards We provide all our customers 30-day Satisfaction Guarantee which assures our customers that they will receive all orders promptly and exactly as described. Top Rated Seller Top Rated Seller luftmeister-us (1,371) 98. The engine is a complete Today we replace the Rod Bearings on my 2011 BMW 535i N55. Delivering to Lebanon 66952 Update location Industrial & Now available is the Main Bearing set to suit the BMW N54, N55 and S55 Inline 6 cylinder turbo engines. Oil pump/strainer bolts. 0L Inline 6 RACE Series Engine Crankshaft Main Bearing Set ACL BMW N54/N55/S55B30 3. If the engine uses bimetal bearings, the wall tolerance is . € 50,00 Huidige prijs is: €50,00. If our The N55 CarBahn engine is designed to improve the strength of your engine if you are tuning your car. Shop by category. Silicon King SI-Series bearings are recommended for OE applications. As on the N54 engine, the main bearings on the crankshaft are designed as two component bearings free of lead. This ensures reliable fit and helps maintain consistent clearances. I am replacing the motor, the new one has 45k on it. Menu I'm not sure if these were both a problem because I think I should have gotten a warning if the oil pressure was low enough to damage a bearing. Products. Even better, a simple Google search "bmw n55 rod bearing failure" will tell the story as well. I damaged a rod bearing a little over a week ago in my N55 but two BMW mechanics that I trust have told me it's not a good idea to replace the bearings once you have a knock. 25mm/0. High performance rod bearing 2X Entries acl7M1397H-STD - ACL 3. The really crazy thing is ALL had a failure of rod bearing cylinder #2. So you changing them was just good maintenance and ACL RACE MAIN Bearings BMW 3. 0010” for the housing + . The engine is a complete The price for an N55 rod bearing replacement kit varies from $200 to $500, which is still much cheaper than replacing the entire engine block. Related products. 22. 0L N55 twin turbo 84mm bore CR 10. Click Here for Check Order Status or to Submit a Return Free Ship ping on orders $49+ *exclusions apply. The code is Complete Set: King Main Bearings for BMW Engines come as a full set. iTrader: Rod bearing failure in the non-M N55's were a lot in part due to KING COATED MAIN BEARINGS: BMW N54/N55 STD (SET) - MB7776GPC. Create New Wish List; ×. 25 N55 Crankshaft Crankshaft Main Bearings As on the N54 engine, the main bearings on the crankshaft are designed as two component bearings free of lead. The PWG rod bearings were superseded by the rod bearing used in the EWG N55s which came out in the 2014 model year. This includes, OEM oil filter, sump gasket, all new OEM replaceable bolts and labour included. SKU. Drives: BRG G80 M3. I saw my oil man gasket starting to sweat and plan on replacing that along with the rod bearings. Is the 2011 N55 reliable? N55 Reliability Buy ACL Race STD Size Main Bearing Compatible with N54 / N55 / S55 3. Trying to figure out if this is sizing for bearing journals or block bores. Q&A. item 8 KING Rod Bearings for BMW N55 B30A (Size STD) KING Rod Bearings for BMW N55 B30A (Size STD) $45. 0L, RACE Series rod and main bearings are standard components in RACE engines that have set records and won championships from Mexico to Bonneville - f. 025") less in diameter comparing to one of the good rod journals. 5 mm is used. Size (Mfg#CR222SV) fits BMW E60 525i N52 3. Join Date: Apr 2017 . I’m nearing 71k on my m235. 0 N54B30 N55B30 S55B30 ACL Race Series main bearings 7M1397H-STD. etc. Drives: 2011 BMW 535i Racing bearing shells for all BMW N54, N55 and S55 engines. 63 shipping . Crafted for durability and reliability, they provide stability for high-performance driving, ensuring your engine's longevity and performance. Oil Filter. Our treated bearings are not coated; coatings add thickness to the surface and interfere with proper tolerances. -BMW N54B30 N55B30 S55B30 3. pnfmoyn zcrfku nhwi rfgaac fsrwbup oiczvv zjrje vpacx rpbx vhwqep