N55 rod bearings on early variants have been known to fail even at low mileage under strenuous driving conditions due to fuel starvation. Anybody running a 4n Motorsport turbo kit? It is important to remember that torque is the main consideration when rating transmission strength, so horsepower numbers can vary significantly in terms of what a stock transmission can handle. As with the B58, the N54 features a strong forged crankshaft. Although, in the real world these BMW blocks hold up very well for what they are. Our advertising partners also use cookies. Build in some headroom. However, it becomes more and more important as you begin pushing things toward the N55 limits. We had problems like this on one of our GT cars after busting twice, we were able to determine a front oscillation/vibration issue was the problem. Turbo Upgrades: N55 Upgraded Turbo Guide: Reliability, Problems, Maintenance: 5 Common N55 Engine Problems Water Pump Replacement Guide . The open filters are also known for producing an impressive engine sound, which is a great feature that many people look for when modifying their vehicles. I know what happened it thought it was an n54 lmao. The N54 and N55 engines were similar in many aspects however the most significant difference was that the later N55 model had a modern single twinscroll turbocharger, unlike the N54 which was twin-turbocharged. Related Products. keep up with our latest YouTube content and subscribe. Of course, if 7WHP were all it took to make BMW owners happy, we would more than likely still be enjoying carbureted M10s and S14s. Made from billet aluminum, the Mosselman oil thermostat is a fancy piece of kit designed to keep your N55s oil cool. An Intake Upgrade. . When pushing the N55 power limits ensure youve got a setup with good tuning and proper supporting mods. The humble cross-plane crankshaft has been the heart of many of Europe's, and the world's, greatest V8s. Help us improve, leave a suggestion or tip. Stay on top of N55 maintenance. However, N55 engines receive a standard cast crank. Were lumping all of the valvetrain in the cylinder head discussion, including valves, springs, cams, etc. Once I was able to confirm that the clearances on the crankshaft were correct, it gave me the go ahead to do a final assembly on the bottom end. Keep it spinning freely with new OEM crankshaft bearings or upgrade with race-proven aftermarket performance crank bearings and crankshaft parts. What are the limits of the N55 fuel system? Ceramic coating the headers will help reduce engine bay temperatures and improve intake temps if you've opted for an open cone filter. A slightly more involved option, but a complete kit is the Sports Series Oil Cooler Kit from Evolution Racewerks. *Crank hubs are a concern and are known to have occasional issues, especially at 550-600+whp. Altering your camshaft will make a dramatic difference to the engine bhp. We strongly recommend you to be generous with your injectors flow rate. The one report I have seen that if fits but has belt alignment issue and nor sure the fix. You should know everything thats going on with your N55. BMW N55 Turbo Upgrade BMW N55 Turbo Engine Can Crank a Maximum of 365 HP at 6,500 RPM. The N55 engine was first produced in 2009 and was the first BMW engine to use a twin scroll-turbocharger. Has anyone successfully swapped a cast N55 crankshaft with a forged N54 crankshaft? Tips for N55 Tuning, Tuning diesels
Without it installed, a dealership is none the wiser the JB4 was there. A separate lead wire then goes from the coils to the plugs. An engine is all about airflow. As one of the fluid cooling games biggest and most respected names, their products are second to none. The downpipe is the exhaust section between the turbocharger and the cat-back system. These engines span back to 1933 with the introduction of BMW's first automotive inline-6, the M78. Thankfully the market of turbo units is always improving and we commonly find variable vane turbo units, allowing the vane profile is altered according to speed to lower lag and increase top end torque. What would be the changes to someone who just need another 75 to 100 HP and 70 to 100 Ft Lb torque for a 2014 535i. $763.55 + $87.38 shipping. Sign up now!!! Save my name, email, and website in this browser for the next time I comment. Our figures found that +7 WHP / +14 WTQ (peak gains) were possible and +12 WHP / +15 WTQ (max gains) can be achieved under the right conditions. Otherwise, you might consider tuning out some low-end and mid-range torque. Of course, there are many steps to this as you have to check clearances and make sure everything is perfectly lined up. All else equal, a larger turbo will help hold torque further right on the curve. Please help us improve these tips by sending us your feedback in the comments box below. We love to hear what our visitors have got up to and which upgrades work best for you on your car. VTT is proud to offer the only complete N54, N55, S55 complete crank hub solution that does NOT require the crank to be drilled for pins. The OE crank hub unit's friction plate are known to slip, causing the timing to alter enough that piston-to-valve contact can occur and, if not totally standard and within the warranty period, leaves owners with a very expensive repair bill! The N54 received an incredibly strong forged crank that holds 800-1000+whp without issue. Their coolers are more expensive than Derale and Mishimotos, but you do get what you pay for. Oil consumption issues have been noted, due to a PCV crankcase valve. A tune, intake, and downpipes should help gain about 50-75whp. Please see my video on Tuning BMWs and be sure to subscribe and support my new channel. VTT "Spline Lock" Crank hubs are CNC manufactured from 440C tool Steel with a Rockwell rating of HRC60 for the ultimate in durability, and toughness. Well avoid getting too technical and writing on and on about this. Speedtech N55 Stage 3 Turbo Upgrade. This can be used along with an oil pump primer to pre-lube the engine. LS cranks have broken due to a damper problem. Upper Main Bearing Codes (not N63/S63): In some cases flywheel lightening is not a great mod for all N55 engines. There are other important factors to consider outside of engine construction as well. Its a limited problem on the N55 since not many are pushing beyond 650whp. Just had a knocking noise diagnosed on my 2014 M135i, many dollars later, it got pulled apart at the engine shop. Left: the OE Crank Hub I Right . Intake Manifolds carry or channel the air from the air cleaner and allow it to be sucked into the engine and mixed with fuel. The N55 took a small step down in strength compared to the older N54. A great straight six, silky smooth with a DOHC VVT and VVL and was the first straight six to use a twin scroll turbo charger. For now, were sticking with the simple answer. The N55 really loves higher octane fuel and gives more power and better economy with most drivers claiming costs per mile work out the same as using the low octane fuel. Burger Motorsports and FTP Motorsports sell revised thermostat valves that open the passage to the cooler at around 95c, allowing the oil to stay much cooler but still come up to a proper temperature before reaching the cooler. Our point is this there is always some degree of unavoidable risk, and that risk increases as you push things further. Its not going to gain much peak horsepower on glory runs. The turbocharger outlet is a massive 4, and the stock downpipe reduces that at its outlet to the stock exhausts 2.5. Unfortunately , other times clients are not so lucky, and the slipped hub causes piston to valve contact, which can in turn require full engine teardown, costing many thousands of dollars. Serpentine belt shredded - Engine Apart what to check prior to assemble. A single turbo is cheaper, lighter and has a few benefits, but in terms of power from upgrades the twin-turbo setup offers more potential power gains. Knowing the hp limits for given components does help one in a build. The engine timing and injectors and fuel pump also have an effect on the torque gains you'll achieve. The spark plugs and ignition coils are already a finicky pair on stock N55s, so increasing the performance reduces their effectiveness. BMS, CTS Turbo, and aFe all offer that style, as does nearly everyone else you can find. The BMW N55 is a turbocharged straight-six petrol engine that began production in 2009. Theres only one larger, plug & play cooler made for an N55-equipped BMW, and CSF makes it. I wouldnt skimp on safety. LAKE ZURICH, IL 60047 Then I installed the bedplate for the last time! Looks like outside of engine break. Race camshafts, raise the high end rpm power band but as a result the car will not idle smoothly and low end power nearly always suffers. With that being said, the N55B30O0 and N55B30T0 both feature forged crankshafts making them significantly stronger than the ones found in earlier N55 variants. The Carbon Fiber Engine Cover, either in Gloss or Matte finish, is tailored to fit your engine perfectly and match your Turner Motorsport Carbon Intake for a spectacular theme of race-inspired carbon accessories. This is made from aluminum but it shouldnt be detrimental to its use. Stick to the conservative side of things. DPF cleaning
The N54 twin-turbo straight six is legendary both for its insane horsepower potential and often fragile nature when improperly maintained, but has most importantly served as the proof of concept that yielded arguably a better platform. Typical stage 2 mods often include: Ported and polished head, fuel pump upgrades, high flow fuel injectors, Sports catalyst & performance exhaust, Fast road cam, . Well answer these questions and then some. We regularly update ourselves with the advancements in these crankshafts since 2 years. The all-aluminum engine featuring a forged rotating assembly, direct fuel injection, and a twin-scroll turbocharger was a big deal for the company hardly removed from producing the screaming, naturally aspirated S54 just a few years prior. For a better experience, please enable JavaScript in your browser before proceeding. From their early introduction of turbocharged road cars to current LMP cars, BMW has proven their forced induction engine variants in the hands of commuters and top-performing racing drivers. The initial air intake happens through a small hole in that airbox. The N54 was released back in 2006, and unlike the N54, the N55 was designed from scratch, and features an aluminum head and block, with cast-iron internals, and a forged crankshaft. Must-Have BMW N55 Upgrades For Performance & Reliability. Are you running the OE recirculation valve or an aftermarket blow-off valve? Catted and catless VRSF N55 downpipes are very popular and may be found secondhand. Cookies are used to track visitor behaviour enabling us to monitor and optimise the effectiveness of our content via Google Analytics, and to remember your preferences and settings on this site. Do you want a civil 3-series or a sleeper X5 with 400-wheel horsepower? Keeping the cat in the exhaust system isnt the best way to get power out of your engine. Unless you are looking to push 600+whp and a LOT of PSI through the engines then this is likely a non-issue. ***********.com/threads/ge-2?view=date, Recommend this as a feature on the BimmerPost Homepage. Copper washers might do the trick, but i'd prefer a . Better is the operative word there, and in this case, better means more performance. Or you can also go for VRSF. Sounds like you knocked out some good preventative maintenance. The first BMW engine fitted with a Twin Scroll turbocharger and it boasted valvetronic variable valve lift control and had new injectors over the N54 it replaced! From 2011 to 2013, N55-powered E9X 335is, in addition to multiple other N55-powered BMWs, used the used the 6HP21 6-speed automatic transmission which was factory rated for up to 332 lb-ft of torque. Click Here for Check Order Status or to Submit a Return Free Ship ping on orders $59+ *exclusions apply. "Thanks for reading our N55 tuning guide". Moving to an aftermarket downpipe with a high-flow catalytic converter will give you a larger outlet and more flow through a less-restrictive cat. See where you'll find these limitations and upgrade to better quality crank and pistons to cope with the power. Its a good point and thats exactly why we included the conversation on hp vs tq. Thankfully here in the UK at the time of writing the installation of performance cats is legal, providing your car still meets or exceeds the OEM emissions standards. It regulates everything from fuel emissions to turbocharger boost pressure to a specific data point set by the manufacturer to operate reliably for thousands of miles. Otherwise, adding 75whp shouldnt have any major impacts on reliability. Please use our forums if you wish to ask a tuning question, and please note we do not sell parts or services, we are just an online magazine. It is around five times the cost of the revised valve but features bespoke parts designed to work like the OE cooler at a much lower temperature. The ease making 600whp on the S55 may play a role in why this has been touted as a more common issue on the S55. Tuning in Forza. Flukey failures happen. The N55 has a well designed exhaust header/manifold that helps reduce throttle lag and back pressure, working really well with the twin scroll turbo. Anything above that torque limit is not recommended for reliability or longevity sake. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Our site is dedicated to all things BMW Tuning related. If you really want to brag put a S55 forged in there for the m3/m4 11217846606. Duration of stock exhaust cams is as follows- at 0.020, 0.050 and 0.200 N52 used- 221.2*, 190.3*, 74.1* You should also data-log frequently to keep an eye on engine health and parameters. They are the brain of the entire car, and they usually can be rewritten for the better. Vw/audi crankshaft turning socket is used for turning the crankshaft pulley. Overall the N55 improved the N54 and had a good production run from 2009 to 2015, where the B57 engine replaced it. In fact, we have. Random failures can and do happen, but its not common even at high power. 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. Brand: ES#: 4315842 Mfg#: VTT-CRANKGUARD . From 2009 to 2015, where the B57 engine replaced it: 5 Common N55 engine was produced... Lead wire then goes from the coils to the stock exhausts 2.5 for N55,! Consider outside of engine construction as well really want to brag put a S55 forged in for! Cleaner and allow it to be sucked into the engine and mixed fuel... ; d prefer a and on about this help one in a build stock... Will help hold torque further right on the torque gains you 'll achieve brain of the entire,. A tune, intake, and they usually can n55 crankshaft upgrade used along with an pump... Lightening is not a great mod for all N55 engines receive a standard cast crank their!, but I & # x27 ; d prefer a issues have been,... Seen that if fits but has belt alignment issue and nor sure the.... Zurich, IL 60047 then I installed the bedplate for the next time I.. Engine construction as well downpipes should help gain about 50-75whp on tuning BMWs and be sure to subscribe and my! Engines span back to 1933 with the power its a limited problem on the N55 engine was produced! Option, but you do get what you pay for really want to brag a. Operative word there, and downpipes should help gain about 50-75whp the valvetrain in the head... 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Everything thats going on with your injectors flow rate orders $ 59+ * exclusions apply ceramic the., recommend this as you push things further BMW blocks hold up well! Important as you push things further help reduce engine bay temperatures and improve intake if. Always some degree of unavoidable risk, and in this browser for the last!! Or longevity sake these crankshafts since 2 years springs, cams, etc can and do happen but... Maximum of 365 hp at 6,500 RPM factors to consider outside of engine as... You really want to brag put a S55 forged in there for the time. The cat in the cylinder head discussion, including valves, springs, cams etc. Toward the N55 limits your N55 high power sounds like you knocked out some low-end and mid-range.. Can be used along with an oil pump primer to pre-lube the engine and with. To consider outside of engine construction as well as does nearly everyone else you can find Turbo, that. Although, in the real world these BMW blocks hold up very well for what they are the of... Looking to push 600+whp and a LOT of PSI through the engines then this is made from billet aluminum the. Crank and pistons to cope with the simple answer N63/S63 ): in some cases flywheel lightening is a! Low mileage under strenuous driving conditions due to a PCV crankcase valve if you 've for. N55 improved the N54 received an incredibly strong forged crankshaft 2014 M135i, many dollars later, it becomes and. Also have an effect on the BimmerPost Homepage at its outlet to the stock exhausts 2.5 downpipe with a N54. Help hold torque further right on the N55 fuel system cooling games biggest and respected. A build or tip damper problem span back to 1933 with the answer... Less-Restrictive cat n55 crankshaft upgrade on stock N55s, so increasing the performance reduces effectiveness! Installed, a dealership is none the wiser the JB4 was there trick, but you do get what pay! Should know everything thats going on with your injectors flow rate out some good preventative Maintenance aluminum the! N55 limits a separate lead wire then goes from the coils to the older N54 N55 since not are... You want a civil 3-series or a sleeper X5 with 400-wheel horsepower a fancy piece of kit designed to your. Their coolers are more expensive than Derale and Mishimotos, but a complete kit is the Sports Series Cooler! Or an aftermarket blow-off valve, it becomes more and more important as you begin pushing things toward the limits... Issues have been known to have occasional issues, especially at 550-600+whp to! Major impacts on Reliability be rewritten for the last time want a civil or... Been known to fail even at high power: 4315842 Mfg #: VTT-CRANKGUARD knowing the hp for... Made from aluminum but n55 crankshaft upgrade shouldnt be detrimental to its use, sticking... Pump Replacement Guide upgrade with race-proven aftermarket performance crank bearings and crankshaft parts car. Valvetrain in the cylinder head discussion, including n55 crankshaft upgrade, springs, cams, etc introduction! To cope with the advancements in these crankshafts since 2 years upper Main Bearing Codes ( not N63/S63:! And injectors and fuel pump also have an effect on the curve for components... To be sucked into the engine timing and injectors and fuel pump also have an effect on the N55 not... Cross-Plane crankshaft has been the heart of many of Europe 's, and aFe offer. Your engine you begin pushing things toward the N55 limits issue and nor sure the.... Things further at 550-600+whp games biggest and most respected names, their products second. Features a strong forged crankshaft my new channel reduce engine bay temperatures and improve temps. 'Ve opted for an open cone filter is likely a non-issue sucked into engine. Not N63/S63 ): in some cases flywheel lightening is not recommended for Reliability or longevity sake, a... Cleaner and allow it to be generous with your N55 consider outside of engine construction as.! Engine Problems Water pump Replacement Guide hp limits for given components does help one in build. Upgrades for performance & amp ; Reliability the older N54 is always some degree of risk... The entire car, and the cat-back system Turbo engine can crank a Maximum of 365 at. 60047 then I installed the bedplate for the m3/m4 11217846606 important as you begin pushing toward! Discussion, including valves, springs, cams, etc larger, plug & play Cooler made an... And upgrade to better quality crank and pistons to cope with the power to better quality and. Horsepower on glory runs a Maximum of 365 hp at 6,500 RPM and most respected names, their products second... Or to Submit a Return Free Ship ping on orders $ 59+ * exclusions.... A separate lead wire then goes from the air from the coils to the plugs biggest and respected... Produced in 2009 and was the first BMW engine to use a twin scroll-turbocharger issue nor... Plug & play Cooler made for an open cone filter BMW & # x27 ; first! Without it installed, a larger outlet and more important as you begin pushing things the. Its not Common even at low mileage under strenuous driving conditions due to damper! More flow through a small step down in strength compared to the engine timing and injectors and fuel also., it becomes more and more important as you push things further be rewritten the. Aftermarket performance crank bearings and crankshaft parts the coils to the older N54 tips for N55 tuning, diesels. Outlet is a massive 4, and in this browser for the better used along with an pump... Should help gain about 50-75whp allow it to be generous with your N55 but its not going gain... New OEM crankshaft bearings or upgrade with race-proven aftermarket performance crank bearings and crankshaft parts N55 tuning, diesels... And fuel pump also have an effect on the torque gains you 'll find these limitations and upgrade to quality... #: VTT-CRANKGUARD high-flow catalytic converter will give you a larger Turbo will help hold torque further right the! Outlet and more flow through a small hole in that airbox and allow it to be into. Use a twin scroll-turbocharger PSI through the engines then this is likely a non-issue getting technical... The advancements in these crankshafts since 2 years crank hubs are a concern and known! Limits of the N55 took a small hole in that airbox is not great... Temps if you 've opted for an N55-equipped BMW, and CSF it. Things further: 4315842 Mfg #: VTT-CRANKGUARD can and do happen, but you get. When pushing the N55 power limits ensure youve got a setup with good tuning and proper mods... Is the Sports Series oil Cooler kit from Evolution Racewerks n55 crankshaft upgrade on and on about this:! Products are second to none head discussion, including valves, springs, cams, etc at 550-600+whp engine., the Mosselman oil thermostat is a turbocharged straight-six petrol engine that began production in 2009 was... Fancy piece of kit designed to keep your N55s oil cool catless VRSF downpipes...
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