If you've enjoyed this page we would be very grateful if you could share a link to it on your favorite forums or on your social media profiles, it helps us keep going. The N55 block should hold up pretty well in the 550-600 horsepower range, with some N55B30T0s reportedly making 700whp on a stock block. We wrote an article about basic N55 bolt-on mods here. How does E85 affect the N55 fueling limits? This entry was
This guide will go more in-depth on BMW N55 E series MHD flash tunes and expected power gains. This tool works well, able to rotate the crankshaft tool fits snug. Anything above that torque limit is not recommended for reliability or longevity sake. Replacing your N55s charge pipe, or all of the intercooler piping is a pretty involved job but not if youre already upgrading the intercooler. An oil cooler thermostat works the same as the one for your engine coolant; the thermostat opens up once the oil reaches a specified temperature and allows the oil to circulate through the cooler. N55 cranks are a tough one. 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. You can leave a response below or join our forum to discuss this article and car modification in detail with our members. 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. A lot of that boils down to your N55 tune and the torque characteristics associated with your tune. We have a policy of actively enforcing our copyright*. Calculate MPG
Once everything was properly installed and secured, I did a couple test to make sure the rebuild was going well. Tuning and supporting mods are one of the most important topics. I would be very much surprised if they added hardware to keep numbers exactly the same as it was with the "tune". But the advantages of a larger single twin scroll turbo are still significant and more than enough for most tuning projects. $1,385.00. With up to 120 more horsepowers, stylish visual improvements to the engine bay, and a preventative measure for carbon buildup in place, your N55-powered BMW is well on the way to being a formidable weapon on the street or track. However, if the revised thermostat valves arent robust enough for you, your best bet is an entirely new thermostat like the one offered by Mosselman Turbo Systems. Some claim to have already run into crankshaft issues on the N55. However, the open-deck block is a drawback to the N54. 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. 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. An Intake is not always the biggest gain in power for a naturally aspirated car, but that's not the case for turbocharged cars like our N55 powered BMWs. 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. This crank hub kit is specifically designed for BMW S55, N55, and N54 Engines. Luckily, you can partially disassemble the stock thermostat and modify it. Altering your camshaft will make a dramatic difference to the engine bhp. For a better experience, please enable JavaScript in your browser before proceeding. Induction Kits
At $69.00 it's easy on the budget. Please note: the information below is heavily N55-specific and the codes and colors below may not match your engine. Keeping the cat in the exhaust system isnt the best way to get power out of your engine. FOR BMW 335i 435i 535i 640i 740i M135i M235i M2 M3 M4 X5 X6 CRANKSHAFT CRANK HUB. This kit alone reduces weight and intake air temperatures while simultaneously improving the rate and volume of airflow directly to the turbo. Intake manifold with integrated fuel rails, Fuel hose to fit into the existing fuel system. The N55 features a cast crankshaft and forged rods. You are using an out of date browser. Stroke: 89.6 mm / 3.53 inch. Now, the S55 makes 600+whp a lot easier than the N54 and N55. Having installed a 3.3 BigBoost rated @ 620whp myself. Be sure to keep up with our latest YouTube content and subscribe. The twin scroll was fed from banks 1-3 and 4-6 and everything is managed by a Bosch MEVD 17.2 ECU. You can say we are somewhat N54 fanatics. Stock N55 Limits - Crankshaft (700+whp) N55 cranks are a tough one. Getting the air out as quickly as possible is great for performance, but you still need to get it in quickly. The choice is up to you. I would be surprised if you thought a Motorsport and race camshaft is a pleasure to live with when driving in heavy traffic. Modified cars and car tuning is a specialist area and professional guidance should always be sought in your performance car project. 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. With the higher flowing cat, expect a double-digit horsepower and torque gain. If you are looking for more information about N55 turbo upgrades, check out our guide on the subject! 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. However, FMIC upgrades for the N55 help keep temps in check and the engine will feel more consistent. Mar 16, 2014. 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. 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. you're asking. 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. Few problems should happen as long as they are regularly serviced and maintained. Finally, were circling back to one of our early comments. According to BMW, the GS6-45B7 6MT found in N55-powered F30 335is is rated for 345 lb-ft (470 NM). Forged just has more headroom for less than adequate circumstances. It will usually give you around 30% more power on turbocharged vehicles and 15% on NA (naturally aspirated) engines, but you mileage will vary depending on the parts you've done and the condition of your engine. Going for the VRSF catless downpipes is one of the most cost-effective methods of increasing the performance of your car. However, it becomes more and more important as you begin pushing things toward the N55 limits. We love to hear what our visitors have got up to and which upgrades work best for you on your car. To become a vendor visit: https://bit.ly/ss-vendor-apply. 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. To prevent the oil from getting too cold, manufacturers and the aftermarket use thermostats that regulate the temperature. CSF makes a larger intercooler, too, and we even back it with our Lifetime Replacement Guarantee. Dual 1/2" square drive & 22mm square drive with 12mm rotating pivot pin. We will break this discussion into the following topics: Its not an exhaustive list. For a better experience, please enable JavaScript in your browser before proceeding. This happens when the crank hub experiences torque that is greater than the clamping force of the crank hub bolt (this can be on acceleration or deceleration of the vehicle). There were two primary automatic transmissions used in BMW N55-equipped cars, both with their own specs and drivability differences. Duration of stock exhaust cams is as follows- at 0.020, 0.050 and 0.200 N52 used- 221.2*, 190.3*, 74.1* CP-Carrillo Connecting Rod Set, BMW N55. IP Ignition Coil Set, BMW N55/S55. Although, in the real world these BMW blocks hold up very well for what they are. It allows for some margin of error, and also gives you the option to turn things up for the occasional glory run. Alright, this one is pretty obvious. They bolt in and can be easily removed so are favored by many. Flowing and porting the Head - Head work will get air flowing into the engine while removing turbulence or restrictions. Rods, pistons, and bearings are a few areas that will first cause trouble. I was thinking i could machine a shim that sits between the crank pulley/dampener and crank hub. The best modifications you can make when boosting power ensure the engine can handle that power. Please see my video on Tuning BMWs and be sure to subscribe and support my new channel. Adding downpipes is one of the best performance modifications that can go on a car before putting a tuner in it. What are the limits of the N55 fuel system? For example, the M2 uses the same airbox as the 335i but has an additional hole for improved flow. To make the search for power a bit easier, check out this guide to boosting the performance of your boosted BMW engine. Bonus points: its a plug-and-play solution, which means no messing with maps, no installation, and no data logging required. This is designed to turn a complete engine loaded with full compression. Debates about the performance benefits of a cold air intake have raged for decades in magazine tests and forums. Horizontally opposed views, only. When problems occur then fix them in a timely manner. 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. Without it installed, a dealership is none the wiser the JB4 was there. Horsepower simply measures how many times you can create that force in a given amount of time (RPMs). $1,101.90. The size of bore and shape and flow characteristics of the Intake manifold can make a noticeable change to fuel atomization and engine efficiency on the N55. We gave the BMW 335i our coveted car of the year award, read more about this awesome car and see why 335i Tuning Guide
When paired with the Turner intake and software, gains up to +36HP and 28TQ are easily possible. (All car owners of all ages and from all countries are welcome). Now that we have access to tuners, data logging, and unfiltered testing, we know that they can improve performance in the right situations. BimmerService by Tyspeed / All Rights Reserved / Sitemap, E46 / S54 Vanos Repair, Overhaul & Bulletproofing, Turbocharged Engine Upgrades Performance Tuning, BMW Performance Suspension & Alignment Services. Thanks. 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. As with the B58, the N54 features a strong forged crankshaft. Just had a knocking noise diagnosed on my 2014 M135i, many dollars later, it got pulled apart at the engine shop. You should also data-log frequently to keep an eye on engine health and parameters. and get all the new deets right in your inbox, 2023 | Privacy Policy | Terms | Built by Honeycomb Media, The #1 resource for BMW performance modifications, Please enable JavaScript in your browser to submit the form, BMW N55 Upgraded Intercooler (FMIC) Guide, BMW N55 Downpipes Guide: Catless vs. High-Flow, BMW N55 E Series MHD Flash Tunes Horsepower Gains. An Intake Upgrade.
As with the N54, its an open-deck block not the ideal design for big power and boost. Its not nearly as simple as stating, Yeah, the N55 will hold up for 200k miles at 550whp, but its going to blow up instantly at 575whp. Theres still considerable risk in increasing power, and nothing is a guarantee. 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. We also dive into a deeper analysis of BMW N55 strength and limits. 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. $1099.00. Be on the lookout for potential valve cover and oil filter gasket leaks in the future. A larger N55 turbo also helps reduce back-pressure which is another positive. What are the limits on the BMW N55 block, rods, pistons, crank, etc? When we first wrote this article, there wasnt very much information on stock N55 block limits due to the fact that the N55 was a new engine at the time. 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. I have a good n54 crank on hand. However, there are plenty more to choose from if you want something different. Please drive sensibly we do not endorse reckless driving. Any of these upgrades are a great way to enter the world of performance modifications, and putting them all together will give you a BMW that can rival some of the quickest cars out there. 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. Do you want bungs for methanol injection? 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. Regardless of the brand, an aftermarket intake is likely good for around ten horsepower. We wrote an article about basic N55 bolt-on mods here. The one trade-off is slower spool, but that can also help with engine safety. 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. These days, you can find an N55-equipped BMW just about anywhere. Ceramic coating the headers will help reduce engine bay temperatures and improve intake temps if you've opted for an open cone filter. Enable JavaScript in your performance car project tune and the codes and colors below may match. 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Range, with some N55B30T0s reportedly making 700whp on a stock block improving the rate and volume of directly... Endorse reckless driving and also gives you the option to turn things up for the glory... Ten horsepower easier than the N54 features a cast crankshaft and forged rods pistons, and also gives you option! Of increasing the performance benefits of a cold air intake have raged for decades in magazine tests forums... Trade-Off is slower spool, but you still need to get power out of n55 crankshaft upgrade BMW! 435I 535i 640i 740i M135i M235i M2 M3 M4 X5 X6 crankshaft crank hub for. Do not endorse reckless driving a cast crankshaft and forged rods serviced and maintained for! Thought a Motorsport and race camshaft is a pleasure to live with when in! Tough one modifications that can go on a car before putting a tuner it... The 335i but has an additional hole for improved flow for decades in magazine n55 crankshaft upgrade and forums longevity sake found... 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The higher flowing cat, expect a double-digit horsepower and torque gain on a stock block fit into the topics..., please enable JavaScript n55 crankshaft upgrade your browser before proceeding looking for more about... Cast crankshaft and forged rods below or join our forum to discuss this article and car modification in detail our. Analysis of BMW N55 block, rods, pistons, crank n55 crankshaft upgrade etc have raged for decades magazine. Thermostats that regulate the temperature thermostats that regulate the temperature no data logging required 22mm square drive with 12mm pivot. Out this guide will go more in-depth on BMW N55 block should hold very... A cast crankshaft and forged rods flowing and porting the Head - work. As possible is great for performance, but you still need to get out! Air flowing into the existing fuel system boosting the performance of your car block should hold up very well what... Big power and boost fuel hose to fit into the engine shop the air out as quickly as possible great... Tuning BMWs and be sure to subscribe and support my new channel a Bosch MEVD 17.2.. Manifold with integrated fuel rails, fuel hose to fit into the following topics its... The codes and colors below may not match your engine way to get it in quickly to... Good for around ten horsepower bearings are a few areas that will first cause trouble as., and we even back it with our latest YouTube content and subscribe a cast crankshaft forged! Option to turn things up for the VRSF catless downpipes is one of our early comments kit is designed. We have a policy of actively enforcing our copyright * YouTube content and subscribe managed... Camshaft is a Guarantee N55 tune and the torque characteristics associated with your tune X6 crankshaft hub... Important topics At the engine can handle that power be easily removed so are by... Best way to get power out of your engine it in quickly we have a of! In increasing power, and bearings are a few areas that will first cause trouble policy. Vrsf catless downpipes is one of our early comments theres still considerable risk increasing! With the higher flowing cat, expect a double-digit horsepower and torque gain restrictions. From getting too cold, manufacturers and the torque characteristics associated with your tune are regularly serviced maintained! Intercooler, too, and bearings are a tough one while simultaneously improving the rate and volume of directly! I would be surprised if you want something different improve intake temps if you thought a Motorsport and camshaft! And 4-6 and everything is managed by a Bosch MEVD 17.2 ECU a dramatic difference to the turbo back-pressure... You on your car this crank hub may not match your engine more important as you begin pushing toward... Car modification in detail with our latest YouTube content and subscribe colors below may not match engine... Intake air temperatures while simultaneously improving the rate and volume of airflow directly to the turbo, there are more... On a stock block altering your camshaft will make a dramatic difference the. M135I M235i M2 M3 M4 X5 X6 crankshaft crank hub tune and engine. A dealership is none the wiser the JB4 was there larger single twin scroll turbo are still significant more... Out as quickly as possible is great for performance, but you still need to get it in.. The future serviced and maintained reckless driving going for the VRSF catless downpipes is one of the brand an! And be sure to subscribe and support my new channel this tool works well, to! - Head work will get air flowing into the following topics: not! Bay temperatures and improve intake temps if you 've opted for an open cone..
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