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. If things get too hot then give the N55 a gentle cool-down cruise. 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. However, the N55 can still handle about 550-600whp with a proper setup. The VRSF charge pipe is incredibly popular but Vargas Turbo Technologies, Burger Motorsports, Masata, and RK Tunes all offer slightly different takes on the intercooler piping made from aluminum. One of the most common and most expensive issues on the F8X and M2 Competition chassis is a failed crank hub. 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. A new version of a popular previous video; created due to our ongoing focus on production values.Ben details the steps Hack Engineering takes to safeguard th. Now, the S55 makes 600+whp a lot easier than the N54 and N55. Speedtech N55 Stage 3 Turbo Upgrade. Please help us improve these tips by sending us your feedback in the comments box below. Installs crankshaft front seal & wear sleeves on all 6.4l fo-rd power-stroke engines. It made decent power from just 1250rpm, and peaked at around 4500rpm giving a near perfect torque band, hitting the rev limiter at 7000rpm. This is made from aluminum but it shouldnt be detrimental to its use. The flashes and the JB4 offer performance benefits on completely stock engines, with up to a claimed 80 horsepower bump. An engine is all about airflow. For a well-rounded visual and performance upgrade, the Turner Motorsport Intake is an obvious selection for any N55 owner. You will need to ensure that the engine is not starved of fuel so should look at the fuelling when you start extending past 20% of a bhp and torque increase. These are common questions in the aftermarket world, but there is never a perfect answer. Their coolers are more expensive than Derale and Mishimotos, but you do get what you pay for. The turbo setup ties into the above discussion by shifting the power curve right. Another unfortunate engineering oversight by the experts in Germany has been the non- keyed or non-pinned crank hub design of the N55 and S55 Line of engines . Most of the cases of cracked crankshafts in the N55 have resulted from spun rod bearings which have damaged the N55 crankshaft in the process. The stepped intercooler drops intake temperatures by 45 degrees F and outlet temperatures by up to 140 degrees with the Turner Motorsport outlet installed, making this an impressive piece of artillery in the fight against performance-robbing heat. The Cheapest, Most Reliable Mercedes-AMG Cars Ever, Period! This crank hub kit is specifically designed for BMW S55, N55, and N54 Engines. Do you want bungs for methanol injection? "Thanks for reading our N55 tuning guide". Throttle lag was virtually non existent, as BMW designed the engine to work and feel like a much larger v8. A Little More About the N55 Engine. hbspt.cta._relativeUrls=true;hbspt.cta.load(3867393, '13f0880f-a4d7-45ef-b212-169a84bd06a5', {"useNewLoader":"true","region":"na1"}); Owner of a flat-six swapped 1998 Impreza 2.5RS and a 1973 Porsche 914. The N52's PCV heater prevents freezing, but can also set fire to your engine bay. When you want it gone, just unplug it, and all of the ECU tunes and associated software leave the chassis with the tuner. NOTE: When pushing much beyond the flow capacity of our existing Stage 2 HPFP kit, the N55 is very much limited by the injectors. It also plays a major role in the performance of a turbocharged engine, making this upgrade great for performance benefits. Duration of stock exhaust cams is as follows- at 0.020, 0.050 and 0.200 N52 used- 221.2*, 190.3*, 74.1* We have developed this one-piece Crank Hub together with our Capture Plate to ensure owners have complete peace of mind, whether on an untuned factory car or equally for those that wish to increase the power and torque output significantly without ever having to worry again; MMR have engineered the most comprehensive solution on the market and at one of the most compelling price points. Fits small block chevy, chevy v6 and 4 cylinder engines. Big valve conversions on the N55, doing some 3 or 5 angle valve jobs, and porting and head flowing will also boost performance, and importantly will afford you a greater performance increase on other upgrades. It is your responsibility to check and verify any tip advice or other articles content with a qualified mechanic before undertaking work or following instructions. Keep it spinning freely with new OEM crankshaft bearings or upgrade with race-proven aftermarket performance crank bearings and crankshaft parts. Then for the ultimate solution, which then also removes the possibility for this crank bolt to be able to loosen with the engine's vibrations or harmonics, we've engineered an additional billet aluminum Capture Plate that securely bolts over the whole head of the crank bolt, making it literally impossible for it to come undone. 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. Flukey failures happen. Also, your absolutely correct I was making that around 7100rpm, here in Brazil we have N55 STOCK doing 730 whp, Your email address will not be published. From solely a performance perspective its certainly not as capable as the other modern BMW turbo inline-6s. Unlike rival products, no drilling of the crankshaft is required. Go For BMS K&N Or VRSF DCIs - One great option for your BMW 335i can be the BMS and K&N cone intakes. As good as that is for the planet, the cats present a restriction in exhaust flow, hampering performance. Turbo Upgrades: N55 Upgraded Turbo Guide: Reliability, Problems, Maintenance: 5 Common N55 Engine Problems Water Pump Replacement Guide . I just need some more power to keep up with the new powerful cars. Automotive Replacement Engine Crankshafts. Beyond the exhaust construction, the brand isnt too important. Your Constructive comments on this article, I really want to improve this article with your help and suggestions. Choosing a higher performance camshaft profile raises the bhp accordingly. However, an oil cooler can prevent engine oil from ever reaching that temperature without the right equipment. However, this next paragraph is very important. Brand: ES#: 4423399. Make sure this fits by entering your model number. Finally, the sunex tools bmw n55forged crankshaft is more, is suitable for very . If you would like to know more, or just get some friendly advice on Tuning your BMW engine please join us in our friendly forumwhere you can discuss N55 tuning options in more detail with our N55 owners. Install them together to save yourself a bunch of hassle. 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. Although still a guess, depending on the condition. 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. 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. Bear in mind that port injection of fuel is more prone to detonation, so it's not a bolt on and forget mod, you have to take everything into account and ensure there is proper engine management in place and a map that reflects this additional supply of fuel. Free shipping. 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. After the replacement hub is installed, the engine is re-assembled and re-timed, and now ready to support higher-than-stock performance levels in both horsepower and torque. The list goes on. Allow the oil and coolant to warm up to operating temperature before applying heavy throttle. We here at FCP Euro are happy to help you through your N55 ownership and offer several resources, guides, and DIYs that will help you along the way. They are the brain of the entire car, and they usually can be rewritten for the better. Be sure to check out their other performance upgrades to fully realize the performance potential of your BMW and stay tuned to the ECS Blog as we continue to update our catalog with the latest and greatest in aftermarket modifications. There are a lot of conflicting opinions in terms of the true limits of the N55 6MT, but were going on BMWs word here. We spent Many aftermarket companies claim an increase of nearly 20 horsepower at stock boost levels, depending on the supporting modifications. In its stock form, the BMW N55 turbo engine is already a powerful engine fit to be installed in a performance car. Stick to the conservative side of things. The goal for part 2 was to clean all of the surfaces, install a new piston to replace the damaged one, prepare the block and the bed plate surfaces and install the new main/crankshaft bearings. Dual 1/2" square drive & 22mm square drive with 12mm rotating pivot pin. With exceptional performance, these parts are also not that heavy on the wallet which means that you get the best of both worlds. 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. Just had a knocking noise diagnosed on my 2014 M135i, many dollars later, it got pulled apart at the engine shop. However, some F series are also PWG rather than EWG. N55 rod bearings on early variants have been known to fail even at low mileage under strenuous driving conditions due to fuel starvation. Cancel. Thank you for your comment. Cannot believe I didnt notice your response; your article has been my N55 bible for 3 years. To clear off space on the shelves, we're is bringing you the Winter Garage Sale with our lowest prices of the year. Ultimately, its a good idea to work with an experienced, professional tuner to dial the car in. Modded Car insurance If you are looking for more N55 content, check out our Ultimate BMW N55 Engine Guide. Double declutch Consider installing a larger oil cooler to avoid any issues. Those shooting for big power will notice the head struggles to keep up with flow. You are using an out of date browser. However, the above are a few of the factors we can control. The billet thermostat opens at 85c and has proven to keep oil temps right around the 95c to 105c range. However, FMIC upgrades for the N55 help keep temps in check and the engine will feel more consistent. E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions, N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning, https://bmw. Finally, were circling back to one of our early comments. Since the introduction of the BMW N54 in 2006, BMW has garnered quite a reputation for squeezing some serious performance out of small displacement turbocharged inline 6 engines. Oil consumption issues have been noted, due to a PCV crankcase valve. But a turbocharged engine is different from a normally aspirated one because it doesnt need to worry about exhaust scavenging or backpressure. At what power threshold do N55 HPFP, LPFP, and port injection upgrades become necessary? Once the exhaust leaves the turbo, get it out with as little restriction as possible. Keep in mind the internet can quickly blow things out of proportion. Customize a car Help us improve, leave a suggestion or tip. Fast road cams are are often the best upgrade for an engine, but we strongly suggest they be installed by someone who knows what they are doing and it can sometimes be hard to find one but you'll probably find a local firm to regrind a stock cam . A tune, intake, and downpipes should help gain about 50-75whp. I was really surprised at the numbers in this article for the rods and pistons but not the bearings. Hope luck is on your side, but know things can still go wrong even if you do everything right. JavaScript is disabled. The new Stepped Intercooler from Turner is the tertiary in the coup-de-gras of N55 performance parts. However, bearings take a lot of abuse with age and mileage so these issues become more common as the N55 ages. In some cases flywheel lightening is not a great mod for all N55 engines. Expect more significant gains if you already run a raised boost pressure and have other supporting modifications. the result is; broken crank, out of shape rod and the grit has ruined the cams and the head. We could go on and on. You want to keep an eye on the engine parameters often. Here is a pic of a broken ls crank to show LS cranks are flawed too. FOR BMW 335i 435i 535i 640i 740i M135i M235i M2 M3 M4 X5 X6 CRANKSHAFT CRANK HUB. At $69.00 it's easy on the budget. The only piece youll have to science out is the cooler; the stock engine already uses an oil cooler thermostat that will work with an aftermarket cooler. Regardless of the brand, an aftermarket intake is likely good for around ten horsepower. 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. Some of our members have had issues with flat spots or glitches after applying mods and upgrades or tuning, this is not usually related to the design of this engine, so instead see our article on diagnosing flat spots and problems after tuning which should help you get the bottom of this issue. Displacement: 2979 cm 3 / 181.8 inch 3. S55 mains bearings and crankshaft were slightly modified for exactly this purpose. The intercooler sits between the engine and the turbocharger to cool the charge air for better power and safer engine conditions. Were lumping all of the valvetrain in the cylinder head discussion, including valves, springs, cams, etc. As a piggyback system, the JB4 tuner plugs into your BMW through the OBD-2 port and integrates itself into the cars electronics. Qty: Availability: Ships in 3 Business Days. Thank you, Some great info! Look for lean AFRs, maxed fuel trims, timing pulls, etc. The more air to get into an engine, the more fuel it can burn and uprating the induction with a turbocharger upgrade makes massive power gains. Interestingly Alpina opted for the twin turbo setup in their performance models. Now that some time has passed, we have a slightly better understanding, but it is still difficult to give an accurate horsepower figure. Having a basic understanding of data logging and reading logs is also helpful. Upgrade the N55 turbo (along with other supporting mods) and the engine can make 500-600whp fairly easily. While the previous two upgrades work exceptionally well in tandem, there is still more that can coax further impressive gains from the N55 with simple bolt-on modification. Happy wrenching! We also dive into a deeper analysis of BMW N55 strength and limits. Its a limited problem on the N55 since not many are pushing beyond 650whp. 866-963-4520. 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On this article for the twin turbo setup in their performance models then the! This article with your help and suggestions, intake, and N54 engines, LPFP, and port injection become.