The one trade-off is slower spool, but that can also help with engine safety. The N55 uses an air-to-air intercooler mounted in the lower grill for constant exposure to the ambient cooling air. The one report I have seen that if fits but has belt alignment issue and nor sure the fix. Now, the S55 makes 600+whp a lot easier than the N54 and N55. Use of this site: Please treat the information on this site as purely speculative and note that we accept no responsibility for damage or loss incurred due to following a recommendation made on this site, our videos or in the forum. Its important to catch this stuff quickly so you can turn boost down until the problems are resolved. bhp and torque adding guide if you want to read more. However, bearings take a lot of abuse with age and mileage so these issues become more common as the N55 ages. Customize a car Unless you are looking to push 600+whp and a LOT of PSI through the engines then this is likely a non-issue. Make sure this fits by entering your model number. Forged just has more headroom for less than adequate circumstances. To find out more about how Google uses personal data when consent is given see Google Policies And see our privacy policies .com site .co.uk site for more information on steps taken to protect your data and how it is used. Expect more significant gains if you already run a raised boost pressure and have other supporting modifications. The exhaust system on a turbocharged engine contains a few distinct parts, and the exhaust section after the catalytic converter is a wildly popular upgrade. The N55s stock oil cooler thermostat opens up right around 120c. Turbo upgrades - forced induction is the most significant way to increase your intakes air supply, allowing you to burn more fuel and make power gains. Tips for N54 Tuning Throttle lag was virtually non existent, as BMW designed the engine to work and feel like a much larger v8. Stick with high-quality oils, and you may even consider using racing oils. There are other important factors to consider outside of engine construction as well. Or you can also go for VRSF. The N55 is objectively good, but there have been a series of unexplained failures in recent years. Your feedback and comments are used to keep this page up to date and help improve the accuracy of these articles which are kept updated and constantly revised. There are tons of companies offering N55 exhausts. Sign up to get vehicle-specific content, sales, and more. 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. Its a limited problem on the N55 since not many are pushing beyond 650whp. These engines span back to 1933 with the introduction of BMW's first automotive inline-6, the M78. Its definitely not as strong as the N54, but the N55 crank would be one of our last concerns until at least 700whp. However, the problems are very isolated and uncommon. 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. Those shooting for big power will notice the head struggles to keep up with flow. You will also have full access to 64 Likes, 1 Comments - ARMYTRIX | INDONESIA (@armytrix_ind) on Instagram: "Beast Mode Mr. @moriokatoys BMW 640i N55 engine Info mau upgrade paket kayak gini contact admin . Prevent your sepentine belt from being sucked into your engine! They also increase the scavenging effect of the engine. As one of the fluid cooling games biggest and most respected names, their products are second to none. Now the tedious work could begin, installing, torquing and selling the correct angle of torque on all crankshaft bolts as well as the bedplate bolts. To clear off space on the shelves, we're is bringing you the Winter Garage Sale with our lowest prices of the year. I applied assembly lube to the bearings, installed the crankshaft and applied a bead of Loctide sealant that BMW recommends. Yes, the N54 and N55 can experience spun crank hubs. The solution remains and upgraded hub , which addresses the issue by updating the design to either a 2 or 4 pin design, or similarly and keyed design as found on RK Autowerks Crank Hub design. 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. BMW was not consistent on which codes correspond to specific colors. Standard OE downpipes all carry catalytic converters, the bit of platinum fitted inside the exhaust to make it less harmful to the environment, as required by law and by the N55s ECU. 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. Air Induction kits and Exhaust - NB: on their own these mods won't ADD TORQUE for most setups, but they enable you to enhance power after other upgrades by removing the restriction. However, you will get a much more significant gain with some better parts. That's just dumb. Once you know youre going to replace your intercooler piping, youll need to choose an aftermarket manufacturer. Stock N55 Limits - Crankshaft (700+whp) N55 cranks are a tough one. This article was written by me, Waynne Smith TorqueCars founder, and I appreciate your feedback and suggestions. We also dive into a deeper analysis of BMW N55 strength and limits. Ensure youre running the proper fueling. That might seem low considering that N55B30M0 is already factory rated at 300 lb-ft. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Active Autowerke, and Evolution Racewerks, among others, all offer catted downpipes that will increase performance and work with aftermarket exhaust systems. However, there are some gems out there that won't break the bank. Speedtech N55 Stage 3 Turbo Upgrade. Please watch this video and subscribe to my YouTube channel. $1,101.90. You can use the M2 airbox as an OE upgrade, but the results will be minimal. Interestingly Alpina opted for the twin turbo setup in their performance models. For example, the M2 uses the same airbox as the 335i but has an additional hole for improved flow. Lighter flywheels - a lower weight flywheel will significantly improve the engines ability to rev freely. NOTE: WE NOW HAVE THE UPDATED AND IMPROVED VERSION OF THE CRANK HUB WHICH CONTAINS 4 PINS (N55 & S55 ONLY) INSTEAD OF THE ORIGINAL 2 PIN DESIGN The keyed crank hub kit includes the: - 4 Pin V2 Keyed Hub- Specialty Drill Bit- Drill Template- Drill Fixture Bolt Quoted from Maximum PSI, the designer of this crank hub However, N55 engines receive a standard cast crank. Something suitable for one model of car may be completely unsuitable for another - so we can only provide generic theory. The MMR Performance one-piece crank hub is machined from billet EN36 that's been heat-treated with a 0.75mm case hardening, making it incredibly strong and durable. Every available horsepower, reliably accessible, with minimal risks, is what makes the Catch Can our final performance upgrade from Turner for your N55-powered BMW. Typical stage 2 mods often include:Ported and polished head, fuel pump upgrades, high flow fuel injectors, Sports catalyst & performance exhaust, Fast road cam, . Issues relating to the standard three-piece crank hub on the S55 & N55 engine are (unfortunately) widely known, but these are fully addressed with the installation of the MMR Performance one-piece billet Crank Hub together with our Capture Plate for ultimate security. The best modifications you can make when boosting power ensure the engine can handle that power. However, they still do their job and keep the ECU happy by cleaning the air enough. Crank Seal comes with. This tool works well, able to rotate the crankshaft tool fits snug. Must-Have BMW N55 Upgrades For Performance & Reliability. Cannot believe I didnt notice your response; your article has been my N55 bible for 3 years. 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. BMW N55 Turbo Upgrade BMW N55 Turbo Engine Can Crank a Maximum of 365 HP at 6,500 RPM. These are often the first parts to let go on the N55. There is a lot of speculation but that's the only post that someone said they did it so it would be good to hear what you find out.. My mostly stock and well taken care of n55 has caught a case of rod knock @ 95k miles. N55 cranks are a tough one. Some claim to have already run into crankshaft issues on the N55. That being said, the S55 features symmetrical counterweights compared to the N55's asymmetrical counterweights. With exceptional performance, these parts are also not that heavy on the wallet which means that you get the best of both worlds. Modified cars and car tuning is a specialist area and professional guidance should always be sought in your performance car project. BMW's love for aluminum bolts has caused more than a few issues. The 2023 FCP Euro Winter Kit Sale is here with a fantastic offer on all of our kits. 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. This product must be used with a Crankshaft Bolt Capture Kit (available separately). Finally, were circling back to one of our early comments. Remaps - N55 remapping provides the most power for the money, replacement ECUs, and inline Tuning boxes are all alternatives. It may not display this or other websites correctly. Turbocharged engines make lots of heat, and efficient cooling is necessary for every fluid that flows through them. Has anyone successfully swapped a cast N55 crankshaft with a forged N54 crankshaft? The billet thermostat opens at 85c and has proven to keep oil temps right around the 95c to 105c range. BMS, CTS Turbo, and aFe all offer that style, as does nearly everyone else you can find. The equation is as follows: Shifting the power curve to the right allows you to make more power with less torque (less force). Brand: ES#: 4423399. I wouldnt skimp on safety. Mocal and Setrab are two well-respected manufacturers of fluid coolers, with the latter being the OE supplier to makes like Ferrari, Mercedes-AMG, Lamborghini, and Aston Martin. The OE crank hub unit's friction plate are known to slip, causing the timing to alter enough that piston-to-valve contact . Required fields are marked *. Each engine responds better to more or less aggressive cam durations so set your engine up on a rolling road. There are very few reports of N55 forged cranks having any issues. When problems occur then fix them in a timely manner. When pushing the N55 limits, a small issue can turn into a major one. 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. Get help answering any questions you have, How to Diagnose & Repair Volvo "Anti-Skid Service Required" Message, Seven New European Cars That Offer A Manual Transmission (2020 Model Year). However, an upgraded intercooler (FMIC) is one of the best modifications for tuned N55s. As emissions regulations began to tighten their grip on gasoline-burning engines, the N55 adapted to the times, allowing BMW to produce more power than ever without damaging its fuel economy standards. Help us improve, leave a suggestion or tip. 978-388-7769 Live Chat. Free shipping. However, there are plenty more to choose from if you want something different. And suggestions FCP Euro Winter Kit Sale is here with a forged N54 crankshaft opens up right 120c! Lots of heat, and I appreciate your feedback and suggestions occur then fix them in a manner! 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