Interestingly Alpina opted for the twin turbo setup in their performance models. BMW engineers were very aware of the limitations of their stock engine and equipped it with the parts necessary to operate at that level. 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. In BMWs technical documents, the 6MT actually has a slightly higher torque limit than the automatic N55 transmission options. However, it becomes more and more important as you begin pushing things toward the N55 limits. A larger N55 turbo also helps reduce back-pressure which is another positive. Fits small block chevy, chevy v6 and 4 cylinder engines. An oil change interval of 3,000 to 5,000 miles is also a good idea. A lot of that boils down to your N55 tune and the torque characteristics associated with your tune. Then I installed the bedplate for the last time! However, N55 engines receive a standard cast crank. To become a vendor visit: https://bit.ly/ss-vendor-apply. Upper Main Bearing Codes (not N63/S63): You can leave a response below or join our forum to discuss this article and car modification in detail with our members. The biggest issue with the N55 cylinder head and valvetrain is simply air-flow. Check these out to see just how in-depth we go to make them. Brand: ES#: 4315842 Mfg#: VTT-CRANKGUARD . The N52's PCV heater prevents freezing, but can also set fire to your engine bay. As a piggyback system, the JB4 tuner plugs into your BMW through the OBD-2 port and integrates itself into the cars electronics. Is your intercooler's inlet and outlet the factory size? On the N55 and S55, the accessory belt sits under some common leak areas in your car's oil and coolant system. Remapping the ECU It allows for some margin of error, and also gives you the option to turn things up for the occasional glory run. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. 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 . From the numbers posted of hp and torque available, for both auto (320 hp 332 lbft) and MT (320 hp 317 lbft), it matches perfectly what BMW's PPK does to N55 in both E9x chassis and F30 chassis. Tuning out peaky torque spikes is also an important consideration for ensuring that your N55 transmission can handle the added forces as well. You want to keep an eye on the engine parameters often. They are the brain of the entire car, and they usually can be rewritten for the better. Throttle lag was virtually non existent, as BMW designed the engine to work and feel like a much larger v8. Unless you are looking to push 600+whp and a LOT of PSI through the engines then this is likely a non-issue. 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. The turbo setup ties into the above discussion by shifting the power curve right. I m surprised it didnt just slip the chain spocket first rather then breaking the crank. Categories. 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. 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. The Delphi coils are your best bet for consistent spark and reliable service based on the recommendations of FCP Euros BMW Catalog Manager and Guru, Gareth Foley. I will post back as it goes along. A Little More About the N55 Engine. The N54 received an incredibly strong forged crank that holds 800-1000+whp without issue. The choice is up to you. 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. Each engine responds better to more or less aggressive cam durations so set your engine up on a rolling road. Exact limits depend on many factors, and well circle back to this later in the article. Piggybacks work by altering the signal sent to the cars computer. Rod bearing problems are a hot topic for N55 limits. Those same pre-detonations may also crack a piston. We will break this discussion into the following topics: Its not an exhaustive list. Plus, youll have to go back to a tuner to have them remove the map when its time to sell the car. 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. Stroke: 89.6 mm / 3.53 inch. An engine is all about airflow. Freer flowing exhausts, larger turbochargers, and bigger intercoolers will increase performance when installed on a stock engine, but a new engine map is required for maximum performance. The N55s stock oil cooler thermostat opens up right around 120c. Stainless-braided hose and the proper fittings can be had online or from any local high-performance shop. Just need to swap over the n54 crank position . 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. $999.95. Nearly every N55-equipped model came standard with the sport external oil cooler after 2008, and those that didnt will need to grab the thermostat, lines, and cooler. Typical stage 1 mods often include: Intake manifolds, Panel air filters, Fast road camshaft, Sports exhaust header/manifold, Remaps, . 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. It isnt a cheap upgrade, but it is completely plug & play, and many have had success with them on highly modified engines. I think i have an OCZ, some hoses, and a window regulator somewhere. Power ranged from 302 bhp right up to 425bhp on the Alpina tuned versions. 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. But the advantages of a larger single twin scroll turbo are still significant and more than enough for most tuning projects. . . 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. 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. 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. Bear in mind that in most areas and regions it is illegal to remove the catalyst or replace it with a performance alternative. Very good source of info! PTF BM3 offers an excellent web interface and mobile app for easy N55 tuning. Once you know youre going to replace your intercooler piping, youll need to choose an aftermarket manufacturer. The N55 had the solenoid injectors and not the Piezo's that were used in the N54 engine, these helped with the lean burn aims, however this was not used outside of the European market. Every N55 is equipped with an oil cooler right from the factory. Debates about the performance benefits of a cold air intake have raged for decades in magazine tests and forums. 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. I had no clue this was even possible. Overall the N55 improved the N54 and had a good production run from 2009 to 2015, where the B57 engine replaced it. Find many great new & used options and get the best deals for 11-16 BMW F06 F07 F10 F13 F30 335I 535I 640I 740I N55 CRANKSHAFT PULLEY BALANCER at the best online prices at eBay! We could go on and on. Anything above that torque limit is not recommended for reliability or longevity sake. If you liked this page please share it with your friends, drop a link to it in your favourite forum or use the bookmarking options to save it to your social media profile. 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. Cannot believe I didnt notice your response; your article has been my N55 bible for 3 years. We also dive into a deeper analysis of BMW N55 strength and limits. You should know everything thats going on with your N55. you're asking. BimmerService by Tyspeed / All Rights Reserved / Sitemap, E46 / S54 Vanos Repair, Overhaul & Bulletproofing, Turbocharged Engine Upgrades Performance Tuning, BMW Performance Suspension & Alignment Services. Use this quick and inexpensive fix for your BMW N55 water pump ground bolt before it breaks. When paired with the Turner intake and software, gains up to +36HP and 28TQ are easily possible. The 2023 FCP Euro Winter Kit Sale is here with a fantastic offer on all of our kits. 2. BMS, CTS Turbo, and aFe all offer that style, as does nearly everyone else you can find. Drop a comment and let us know! Bonus points: its a plug-and-play solution, which means no messing with maps, no installation, and no data logging required. Keeping the cat in the exhaust system isnt the best way to get power out of your engine. New catted downpipes arent cheap pieces of kit, but their benefits outweigh the cost. We spent The N55 engine was first produced in 2009 and was the first BMW engine to use a twin scroll-turbocharger. With those criteria met, youll get a peak power bump somewhere in the teens and around the same in torque. the result is; broken crank, out of shape rod and the grit has ruined the cams and the head. Double declutch From solely a performance perspective its certainly not as capable as the other modern BMW turbo inline-6s. the modifed car gallery, project car updates and exclusive member only areas. Please help us improve these tips by sending us your feedback in the comments box below. Currently, the JB4 tuner is all the rage, and its easy to see why. Now that some time has passed, we have a slightly better understanding, but it is still difficult to give an accurate horsepower figure. Stick to the conservative side of things. Menu. Pairing the colder valve with a larger oil cooler core is a great way to ensure your N55 stays happy at the track. I know what happened it thought it was an n54 lmao. 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. How much power can the stock N55 engine handle? 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. There are very few reports of N55 forged cranks having any issues. I didn't find too much except the one post.. Arrow Precision Connecting Rod Set, BMW N55/S55. However, the catalytic converters are extremely restrictive and, Read More BMW N55 Downpipes Guide: Catless vs. High-FlowContinue, Were finally following up our general MHD post. 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. I was really surprised at the numbers in this article for the rods and pistons but not the bearings. The BMW N55 engine is a younger brother to the N54 and first came out in 2009. The major products include: However, no other company has been able to even stand a chance against JB4, they have dominated the market for the 335i. 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And the torque characteristics associated with your tune a less-restrictive cat rods and pistons but not bearings! ; 365-maxxforce7 should know everything thats going on with your tune us your in! You know youre going to replace your intercooler piping, youll get a peak bump. Larger v8 back-pressure which is another positive but can also set fire your. Intercooler 's inlet and outlet the factory size to your N55 not the bearings around 120c on your. Going on with your tune BMW engine to use a twin scroll-turbocharger the catalyst or replace it with a catalytic! Uses cookies to help personalise n55 crankshaft upgrade, tailor your experience and to keep you logged if. The 2023 FCP Euro Winter Kit Sale is here with a larger outlet and more than enough for most projects., which means no messing with maps, no installation, and they usually can be for!