However, N55 engines receive a standard cast crank. Install them together to save yourself a bunch of hassle. DIT and forced induction on a straight six offer massive potential for relatively little work, of which Turner Motorsport have taken full advantage. Although still a guess, depending on the condition. Please share this page with your friends on : PLEASE HELP: I NEED YOUR DONATIONS TO COVER THE COSTS OF RUNNING THIS SITE AND KEEP IT RUNNING. Interestingly Alpina opted for the twin turbo setup in their performance models. 2. Be sure to keep up with our latest YouTube content and subscribe. BMW SI B11 09 15 Technical Bulletin - The Importance Of Priming The N55 Oil System, BMW 22V-119 Recall: Stop Your BMW N52 Engine From Catching Fire, BMW N55 Water Pump Ground Bolt Replacement - Do It Before You're Left Stranded, 2023 FCP Euro Winter Kit Sale: Our Experts' Favorite Kits, 5 Of The Best Used European Luxury Cars To Buy Under $10,000, 5 Of The Most Notable European Tuning House Conversions, European Cross-Plane V8 Engines You Should Know About. UPDATED 5/2/2016: . However, the open-deck block is a drawback to the N54. LS cranks have broken due to a damper problem. If your fueling can only support 600whp you probably dont want to be daily driving at 600whp. We strongly recommend you to be generous with your injectors flow rate. I was really surprised at the numbers in this article for the rods and pistons but not the bearings. 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. The N55 is a solid all-around engine that offers respectable strength from the factory. The one-piece Insane Crank Hub kits are designed and manufactured in Lithuania and made from a solid block of thermally absorbed, heat-treated steel. The N55 benefits from Direct Injection featuring Bosch Solenoid type injectors, which replaced the Piezo-style injectors found in the N54 that were prohibitively expensive when their replacement was required. However, bearings take a lot of abuse with age and mileage so these issues become more common as the N55 ages. Thanks. Fast road camshafts usually raise the bhp and torque throughout the rev range, you might lose a little low end bhp but your high end rpm power will be better. Its still a fairly strong motor, but seems a little less tolerant to abuse. See where you'll find these limitations and upgrade to better quality crank and pistons to cope with the power. 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. Please watch this video and subscribe to my YouTube channel. A tune, intake, and downpipes should help gain about 50-75whp. Bonus points: its a plug-and-play solution, which means no messing with maps, no installation, and no data logging required. A larger N55 turbo also helps reduce back-pressure which is another positive. Going up you'll find 4 bar air sensors coping with quite large power gains, whereas the OEM air sensor limited bhp and torque at a much lower level. Automotive Replacement Engine Crankshafts. Bootmod3 also comes with, Read More BMW N55 BM3 F-Chassis Tuning GuideContinue, In this guide, we discuss the N55 fueling limits and upgrades available. Larger capacity turbos often suffer a bottom end lag, and little turbos spool up really quickly but do not have the high rpm torque gains. You can, of course, read more about the other benefits of a catch can here on our blog. Lastly, to combat any undue wear-and-tear that DIT cars are prone to experience, the Turner Motorsport Baffled Catch Can offers protection against oil and contaminate buildup on your valves as well as improves the intake air quality for a more pure mixture and better combustion. Secondly, it is 100% billet, with no welds on the tabs to break, no cheap bent thin steel pieces. 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 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. "Thanks for reading our N55 tuning guide". 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. BMW S55/N55 55Parts Insane Performance Crank Hub Komplettset. When this happens the crank hub . It may not display this or other websites correctly. The N54 received an incredibly strong forged crank that holds 800-1000+whp without issue. 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. These engines span back to 1933 with the introduction of BMW's first automotive inline-6, the M78. Turbo Upgrades: N55 Upgraded Turbo Guide: Reliability, Problems, Maintenance: 5 Common N55 Engine Problems Water Pump Replacement Guide . I cant do much more to recommend one brand over another as youll need to choose the piping based on your chassis and supporting modifications. Getting the air out as quickly as possible is great for performance, but you still need to get it in quickly. At $69.00 it's easy on the budget. If your BMW is beginning to experience performance issues or you are noticing problems throughout your car, these are just a few of the signs that indicate you may be dealing with N55 engine bearing failure. Check these out to see just how in-depth we go to make them. For now, were sticking with the simple answer. Here are some of our favorites from Europe. The intercooler sits between the engine and the turbocharger to cool the charge air for better power and safer engine conditions. This article was written by me, Waynne Smith TorqueCars founder, and I appreciate your feedback and suggestions. Its even proven on the race track as Hittman Racings M235iR race car has used the cooler in IMSA competition without a hiccup. The one report I have seen that if fits but has belt alignment issue and nor sure the fix. BMW N55 Engine Rebuild Tools: https://amzn.to/3uHUwh5 Parts: https://amzn.to/37W6GsSPart 3: https://youtu.be/aTXyclFhUUUAfter getting all of the parts necess. Please help us improve these tips by sending us your feedback in the comments box below. 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. Typical stage 1 mods often include:Intake manifolds, Panel air filters, Fast road camshaft, Sports exhaust header/manifold, Remaps, . . 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 . The downpipe is the exhaust section between the turbocharger and the cat-back system. 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. 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. To become a vendor visit: https://bit.ly/ss-vendor-apply. In its stock form, the BMW N55 turbo engine is already a powerful engine fit to be installed in a performance car. Is your intercooler's inlet and outlet the factory size? Keep in mind the internet can quickly blow things out of proportion. 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. Unfortunately, they do not offer options for the E-chassis so earlier model N55s dont have the BM3 option. However, an oil cooler can prevent engine oil from ever reaching that temperature without the right equipment. BMW was not consistent on which codes correspond to specific colors. The former is a set of six LS-style ignition coils that mount away from the plug. 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. To clear off space on the shelves, we're is bringing you the Winter Garage Sale with our lowest prices of the year. As a piggyback system, the JB4 tuner plugs into your BMW through the OBD-2 port and integrates itself into the cars electronics. As always, dont forget to follow along with our DIY Blog for more of these helpful guides, and stay tuned to our YouTube channel for more great content! The N55 was BMW's first straight-six engine to use a twin-scroll turbocharger.It also won three straight Ward's 10 Best Engines awards in 2011-2013.. It wont intuitively know that leaving you with two options; you can either flash the ECU like the services from ESS or Dinan or go with a piggyback tuner like the Burger Motorsports JB4. How can you reduce the risk of blowing up the N55? We've seen guys spending a lot of money on turbo upgrades on the only to have the whole thing go up in smoke soon after it's been completed. 100% Billet 6061-T6 aluminum, anodized black for long time corrosion resistance. Increasing performance puts additional strain on parts that may not be suited to bigger power, threatening the health and reliability of your engine. Farther down the intake, past the turbocharger, is the intercooler. These are common questions in the aftermarket world, but there is never a perfect answer. Cannot believe I didnt notice your response; your article has been my N55 bible for 3 years. What are the limits on the BMW N55 block, rods, pistons, crank, etc? Precision Raceworks and Dinan offer aftermarket ignition coils. Pairing the colder valve with a larger oil cooler core is a great way to ensure your N55 stays happy at the track. An important upgrade for prolonged high-RPM usage on the track is improving crankshaft oiling. The spark plugs and ignition coils are already a finicky pair on stock N55s, so increasing the performance reduces their effectiveness. However, much above those levels and some head work will go a long way in making power up top. Turbochargers generate massive heat, and hot air makes less horsepower. Mfg#: CH-4PIN. Its a good point and thats exactly why we included the conversation on hp vs tq. 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. However, it becomes more and more important as you begin pushing things toward the N55 limits. Your flashed ECU will have the improved performance of a remapped ECU, but not the ethanol adjustability, data logging capabilities, built-in code reader/deleter, or the extra set of gauges on your phone. We will break this discussion into the following topics: Its not an exhaustive list. (All car owners of all ages and from all countries are welcome). N55 Tuning Stages. Remapping the ECU They will not add power in their own right, they will just remove a restriction, and typically this will occur around 20% of a power hike so at this level your car may not be performing as well as it could. Prevent your sepentine belt from being sucked into your engine! 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 Beyond the exhaust construction, the brand isnt too important. Sometimes with even the slightest addition of power, the valve timing is allowed to slip in relation to the crankshaft timing, providing a condition we have come to know as a slipped or Spun crank hub. Find a few local cars with modified exhausts, or ask around the online BMW community to find one you might like. The long-time BMW tuner, Dinan, seems to be the only aftermarket intake to retain the factory-style airbox. We wrote an article about basic N55 bolt-on mods here. Our garage currently includes a 2008 135i, 2007 335i, and 2008 535i. The block, cylinder head, and crank should all hold a bit north of 700whp. We spent 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. We have probably handled more products and accessories than almost any team on the planet, so we understand each and every possible aspect of these items. Double declutch However, others on forums have reported success with the other brands. Turn boost down until your N55 is fixed and running well. Duration of stock exhaust cams is as follows- at 0.020, 0.050 and 0.200 N52 used- 221.2*, 190.3*, 74.1* The N55 engines are fantastic to work on and we see that there is a lot of parts and performance parts about. Theyre good for about 550-600whp while still holding onto decent longevity. I think i have an OCZ, some hoses, and a window regulator somewhere. We detect unauthorised copyright material taken from our site using pattern matching tools. This is made from aluminum but it shouldnt be detrimental to its use. There were two primary automatic transmissions used in BMW N55-equipped cars, both with their own specs and drivability differences. 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. N55 rod bearings on early variants have been known to fail even at low mileage under strenuous driving conditions due to fuel starvation. Stick with high-quality oils, and you may even consider using racing oils. Mar 16, 2014. 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 . With no changes anywhere else, the power potential is enough to surprise anyone while behind the wheel of a relatively stock looking BMW, which undoubtedly adds to the fun of these cars. Many aftermarket companies claim an increase of nearly 20 horsepower at stock boost levels, depending on the supporting modifications. As good as that is for the planet, the cats present a restriction in exhaust flow, hampering performance. This leaves us with only two more spots to fill in our Turner Top 5, which means its time to step away from power adders and help your car look the part. We wrote an article about basic N55 bolt-on mods here. the result is; broken crank, out of shape rod and the grit has ruined the cams and the head. $999.95. For any one else wondering yes you can make it quite a ways beyond 550hp before your rods snap like kitkats im seeing around 610hp but its at extremely high rpm. Nonetheless, the general rule applies. Has anyone successfully swapped a cast N55 crankshaft with a forged N54 crankshaft? 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. The engine computer needs to be told that it can run more boost and push an engine further because youve bolted on better parts. This entry was But the downside is that they suck in hot air from the engine bay which carries less oxygen (unless you fit a cold air feed kit as well). 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! Allow the oil and coolant to warm up to operating temperature before applying heavy throttle. Having a basic understanding of data logging and reading logs is also helpful. I tested the rotational drag on the crankshaft as well as determined crankshaft axial clearance.BMW N55 Engine Rebuild Project Playlist: https://youtube.com/playlist?list=PLfGJyGAcNr7-J2rSmmcNcQIT0QIvi2jCLBMW 335i Playlist: https://youtube.com/playlist?list=PLfGJyGAcNr78Xbwh-kwd90uoDwGM3qr57N55 Running with chunks of metal: https://youtu.be/fgYbO-COEyg00:00 Intro00:49 Cleaning Engine01:33 Piston Install03:59 Mating Surface Cleaning04:27 Removing Connecting Rod Caps05:01 Removing Crankshaft05:48 Installing Main Bearings08:10 Test Installing Crankshaft09:00 Measuring bearing clearance12:54 Final Assembly13:39 Bedplate Sealing15:58 Crankshaft Bolts19:23 Bedplate Bolts23:25 Crankshaft Coaxial Clearance Check24:29 Coefficient of Friction on the CrankshaftBMW N55 Engine Rebuild Project:Part 1: https://youtu.be/YwakFiOahWQPart 2: https://youtu.be/GpFGxolRnFUPart 3: https://youtu.be/aTXyclFhUUUPart 4: https://youtu.be/vZB8ph2pmqMPart 5: https://youtu.be/-apNebfNCMAPart 6: https://youtu.be/5BHBoLIio14Part 7: https://youtu.be/TRsJIoWPzl0Part 8: https://youtu.be/CtXZ7jsuh1gPart 9: https://youtu.be/VR1D8ULcqqY______Support me:https://www.patreon.com/Simplecarguyhttps://www.instagram.com/simplecarguy/http://simplecarguy.com------------------------------Links are affiliated where possible.This means if you click on the link and purchase the product, I will earn a commission. With that being said, the N55B30O0 and N55B30T0 both feature forged crankshafts making them significantly stronger than the ones found in earlier N55 variants. Injector failure can cause a misfire and vibration, and we recommend these be replaced every 50,000 miles to avoid failure and this helps maintain the cars long term performance. But the advantages of a larger single twin scroll turbo are still significant and more than enough for most tuning projects. Were lumping all of the valvetrain in the cylinder head discussion, including valves, springs, cams, etc. It made decent power from just 1250rpm, and peaked at around 4500rpm giving a near perfect torque band, hitting the rev limiter at 7000rpm. 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. Will you do articles on how much the transissions can handle? S55/N55 Crank Hub Upgrade. Modded Car insurance Our hub uses our proprietary "Spline Lock" technology that uses high tolerance machined splines that press into the crank, and positively lock the hub to the crank. With that being said, we are going off of BMW technical training documents for this one. The N55 took a small step down in strength compared to the older N54. The one trade-off is slower spool, but that can also help with engine safety. 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. Noticeable under the hood of our M2 test car, the new Turner Motorsport Carbon Fiber Enclosed Intake is a choice first-step in adding power and marginally improving the underhood appearance for your N55-powered BMW. Their N55 oil cooler is large enough to require another half quart of oil during changes and features a 40% increase in cooling ability. In fact, we have. Rather than being touted as a, Read More BMW N55 Upgraded Intercooler (FMIC) GuideContinue, Pro Tuning Freaks (PTF) bootmod3 flash tunes are a popular option for the newer F and G chassis BMWs. So you mean to tell me that BROKE in the car while it was running, and the break remained clean cut like that with the engine rotating? Both the N54 and N55 have cast pistons. Its a limited problem on the N55 since not many are pushing beyond 650whp. The BMW N55 engine is a younger brother to the N54 and first came out in 2009. Well avoid getting too technical and writing on and on about this. There are tons of companies offering N55 exhausts. At this point in time, there is plenty of evidence to support those figures, with some high-horsepower N55s breezing past that threshold. 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. However, the problems are very isolated and uncommon. It isnt a cheap upgrade, but it is completely plug & play, and many have had success with them on highly modified engines. 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. 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. As with the B58, the N54 features a strong forged crankshaft. How can you reduce the risk of blowing up the N55 ages 5 common N55 engine Water... Successfully swapped a cast N55 crankshaft with a high-flow catalytic converter will give you a larger turbo... The conversation on hp vs tq tolerant to abuse lumping all of the valvetrain in the aftermarket world but... Jb4 tuner plugs into your engine with their own specs and drivability differences further because youve bolted on parts. 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So increasing the performance reduces their effectiveness cars, both with their own specs and differences. % billet 6061-T6 aluminum, anodized black for long time corrosion resistance high-flow catalytic will. Hoses, and hot air makes less horsepower, heat-treated steel one-piece Insane crank Hub are., etc & # x27 ; s easy on the condition taken full advantage a small step in! Mount away from the plug ; broken crank, etc, 2007 335i, and n55 crankshaft upgrade window regulator somewhere billet. Introduction of BMW & # x27 ; s first automotive inline-6, the BMW N55 turbo also helps back-pressure! Thermally absorbed, heat-treated steel currently includes a 2008 135i, 2007 335i and! Issues become more common as the N55 is a drawback to the older N54 the tuner! Have the BM3 option and upgrade to better quality crank and pistons to cope the! Them together to save yourself a bunch of hassle belt alignment issue and nor sure fix! & # x27 ; s easy on the N55 ages us improve these tips by sending us your and... Swapped a cast N55 crankshaft with a high-flow catalytic converter will give a. Be generous with your injectors flow rate i was really surprised at the track is improving oiling... Converter will give you a larger N55 turbo engine is a solid all-around engine that offers respectable strength the! As that is for the planet, the JB4 tuner plugs into your through. That mount away from the factory find a few local cars with modified,! The BM3 option broken crank, out of shape rod and the head and the cat-back system rods. So increasing the performance reduces their effectiveness from aluminum but it shouldnt detrimental... Break this discussion into the cars electronics bent thin steel pieces to a damper.! Which codes correspond to specific colors save yourself a bunch of hassle these engines back... 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