n54 compression numbers

A second thing to note is that they are all manual transmissions. With these better than expected results, I'm confident going through with the build of my "EDirty6". The 30FF code will usually read DME: Turbocharger, charge-air pressure too low. If you're working with an engine that won't start and you can't get it up to operating temperature, you can add a drop of oil into each cylinder before performing a compression test. BMW initially launched the N54 in the E9x platform, but it quickly spread throughout the BMW lineup. The N55 is objectively good, but there have been a series of unexplained failures in recent years. The dreams of setting an N54 world record are probably very far out of sight for just about every one that is reading this. The stock turbos run out of steam pretty quickly, as theyre designed to provide low-end torque and virtually no turbo lag. Send it back, amazon is good with returns. Its V8 weighs 445 lbs, while the N54 weighs 429 lbs. For reference, under 5% leak-down is amazing, 10% is good, 15% just acceptable, and 20% meansyou'll be spending a lot of money in the near future. Much of this is a non-issue in the modern days. the standard dyno is a Dynojet and people will discount your numbers. The list goes on, but the point remains. The first step in performing a compression test is removing all spark plugs from the engine. I usethis as the cue that the cylinder went through one full revolution. Downpipes bolt directly to the turbochargers and the factory catalytic converters create significant back-pressure which results in slower turbo spool. A cold air intake works by moving the engines air filter away from the engine, so that . Some even fail by 40,000 miles or sooner. This is a highly proven motor with plenty running to 200,000+ miles, even with extensive power upgrades. BMW minimized turbo lag by using two small turbos running in parallel, which they dubbed TwinPower Turbo. Ironically, BMW still uses the TwinPower Turbo marketing term for their single turbo engines. He currently holds the top two records at his garage in Florida. Join Date: Mar 2012 . Compression ratio: 9.5:1. [11][12]The boost pressure is 8 psi (0.55 bar) and an air-to-air intercooleris used. BMW offered an extended warranty for 8 years and 82,000 miles for this problem. carolinasbmwmoa.org quickly gained a following, and Carolina now leads a team of contributors who share their experiences and knowledge about BMWs. About the car BMW 335i 2008 n54 engine 36,896 miles on the clock Modifications Jb4 + Bluetooth Mhd flash map stage 2+fmic+ dps 95oct AT Wagner stage 1+ competition front mount intercooler Richtertuning 3.5 down pipes Miltek full decat back 3" exhaust system no baffles just back box's Forge hard pipe and forge single blow off valve While the above list of issues is in no specific order the cooling system is a good starting point. Truly severe problems like internals or timing chains are rare. How much difference in compression is OK? Some expensive issues like N54 turbos or fuel injectors are likely best to address when problems actually happen. Counting how many spark plugs you see on your engine will , The coupe has a better center of gravity and is slightly lower so with completely equal drivers it will slightly and I mean slightly out handle the sedan but with everyday drivers you will never , The main difference between tail lights and brake lights is that the former lights up as soon as the headlights are turned on, while the latter only engages upon stepping on the brake pedal. Major General . The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Budget builds are a viable option under 600whp, but still ensure youre doing things right. Nonetheless, the BMW N54 is capable of hitting numbers up to and sometimes beyond 1,000whp. Some complete engine failures happen due to this, but its not too common. A variation of 10 or 15 psi between cylinders is normal. Other great off-the-shelf tuning options like MHD flash tunes are a good choice, too. For this, you're going to want to use a dedicated long-reach spark plug socket. Otherwise, the LPFP can have issues but its pretty uncommon. The strength of the bottom end makes the N54 legendary, and its what allows the N54 to reach upwards of 800 horsepower. Those looking to upgrade turbos or push the limits should consider custom tuning. It's also a possibility thatyouhave an engine thatmakes good compression, but you still have a leak in the cylinder. *Note charge pipes & BOV mods arent a power upgrade. . By adding just this drop of oil, it willhelp tolubricate the piston rings. Do NOT follow this link or you will be banned from the site! Its typically accepted that the engine was underrated and really makes about 20-30 horsepower more. Here are a few examples of leaks that you can detect with a leak down tester: MyE36leak-down test results were pretty strong, and I'm satisfied that the engine is still in goodhealth. Now lets move onto some pretty common issues with the N54 engine. Overall, the leak-down test will give you detailed information to determine the health of your engine and help pinpoint a failure during the diagnostic process. Were talking about an engine thats mostly 12-15 years old now. This Vargas Twin setup holds the record for highest horsepower N54 with 847WHPwithin 100WHP of the fastest single-turbo setup. Water pumps often fail in the 60,000 to 100,000 mile ballpark. Dont let that take away from the point, though. Leaks happen far more often than failure. A simple tune like the N54 JB4 can offer about 70-80whp on an otherwise stock engine. BMW had produced turbocharged engines in the past such as the M102 and M106, but those engines were limited production and never had successors. Occurs during a cold start; If you have an extra person around, it's helpful to have them watch the compression tester gauge for the peak reading. However, we really like the N54 in the 500-600whp range. BMW used an electronic water pump on the N54 and while electronic water pumps have plenty of benefits, they also fail more often than traditional water pumps. The humble cross-plane crankshaft has been the heart of many of Europe's, and the world's, greatest V8s. Hello everyone I am curious what compression numbers should be on the n54 Also, only the coils and plugs need to be removed correct? E90/E91/E92/E93 (2006 - 2013) N54 Compression test. 6. The valvetrain doesnt run into problems. I promise we only send like one email per month. Then the other simple N54 upgrades well discuss in a moment unlock even more potential. I plan on addressing the leaks but want to know if you guys would bother??? Add in some basic bolt-ons for about $1,500 all in and youve got a 500+ horsepower N54. In turn,this givesyou a more accurate idea of the compression within each cylinder when the engine is at operating temperatures. Compression is everything in an enginepoor compression can cause misfiresas well as poor ignition. Head gaskets dont leak. 300 horsepower is not a huge amount for a twin-turbo 3.0L. BMW's marketed the twin-turbo as "TwinPower Turbo",[10]although the term has since been used for engines which have a single twin-scroll turbocharger. Then there is the BMW N54 radiator, expansion tank, and coolant hoses. This cookie is set by GDPR Cookie Consent plugin. Or at least research overlapping labor items, so you can do stuff preventatively and avoid duplicate repair bills down the road. He'll be chronicling the entire project right here on our blog, from buying it to repairing it, and eventually, tracking it. With over 200 automotive articles published, Jake brings a balance of writing skill, hands-on BMW experience, and technical knowledge to the table. JavaScript is disabled. Manufacturers will only go so far for a customer. Use this quick and inexpensive fix for your BMW N55 water pump ground bolt before it breaks. My compression numbers were all pretty consistent from cylinder to cylinder and well within specifications from BMW. What are the limits on the N54 block, pistons, rods, etc? It also makes 300-335 horsepower from the factory. Assuming the engine does not have serious underlying issues, 500WHP is practically nothing to the N54, especially with E85 mixtures. Definitely a huge improvement, overall. If you are shooting for 600whp+ you will want to have a manual. A majority, Read More BMW N54 335i Cost of Ownership Maintenance & Repair CostsContinue, Your email address will not be published. Why is this? Hobby mechanic doing my own work for 50 years or so. With simple bolt-ons 375-425whp is a very modest ballpark for the N54 engine. Transmission & engine mounts and subframe bushings arent a bad idea. 1: 175 2: 170 3: 170 4: 170 5: 170 6: 157 For example, a $50 oil pan gasket can run about $600-1,000 in labor. She is a proud owner of a BMW M3 and has been an active member of the BMW Motorcycle Owners of America (BMW MOA) for many years. As a general rule, a low compression ball should be used by golfers that swing the club less than 85 MPH, a mid compression ball is for swing speeds between 85-100 MPH, and a high compression ball is for swing speeds above 100 MPH. Did you ever consider that buying a compression tester by someone named ". On a perfectly healthy engine, you can still expect some air to escapepast the piston rings. Lots to talk about on the tool front. It reallyshouldn't require any major work to bring it back within specifications. A compression test is a great way to determine whether or not you should continue forward and perform a leak-down test. 1. We post engine specific tuning guides, maintenance guides, DIY repairs, etc. Not a huge deal if you plan to upgrade anyways. Again, random failures do happen but thats true of any engine. However, the plastic stock pipe is prone to cracking under higher than stock boost. Low compression in one cylinder usually indicates a bad exhaust valve. This is a quicker section simply because its too lengthy to cover in this article. It then made its way into a handful of other models including the 135i, 535i, and Z4. Look into aluminum charge pipe upgrades and maybe add in a BOV for some extra sounds & fun. Once the compression gauge is hooked up, crankthe engine over a few times. e92 M3 will be about same weight as e92 335i. Is a brake light and running light the same? sensors sometimes fail with that kind of age. While the engine is cranking over, you will be able to hear a distinct noise coming from the compression tester. Compression ratios usually vary between 1.057 per stage; however, a ratio of 3.54.0 per stage is considered maximum for most process operations. There are very good parts of the N54 that were way overbuilt. I did a dance and took photos. The biggest thing is that they basically max out rail pressures to allow for additional torque. What are acceptable compression readings? The N54 can and often does last 200,000+ miles if youre willing to spend enough money. My case is likely an anomoly, however, this is an example that the stock turbos can let go at any time in the 20+PSI range. The DCT transmissions just cant handle the torque that a manual can. Combine that with DOHC and variable valve timing and the N54 is good for 7,000 RPM redline. N54 stock turbos do fail naturally, though. This cookie is set by GDPR Cookie Consent plugin. Heads dont lift. N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i. The stock fuel system was designed by BMW to be overkill, and unlike other direct injection cars, you can still drive comfortably with a high-pressure fuel pump failure. The standard dyno is a Dynojet and people will discount your numbers if you dyno it on anything else. This stock turbo N54 is FBO (full bolt-on) with ugraded inlets and outlets, a Stage 1 Fuel-it LPFP and a custom tune by BQ Wedge Performance using a Cobb Accessport. Although the TwinPower Turbo system of the N54 is known for being problematic, it did a fantastic job of minimizing turbo lag and making the N54 feel like a larger naturally aspirated engine rather than a small turbocharged engine. Its an impressive accomplishment for what it is on paper. They also make the turbos job a bit easier due to more air-flow volume at lower PSI. A lot of the parts are reasonably priced. Rods, rod bearings, and pistons are the primary concern around this power. Then you can hook those sensors to a computer and data log the compression and leakdown and graph it. One concern for those upgrading the N54 fuel system is the LPFP EKP module. Piggyback vs. If they break parts of the belt can wind around the crank and actually wind up in the oil pan and cause issues. With over 10 years of experience modifying and performing DIY work on BMWs, hes developed a deep understanding of virtually every BMW engine. Once you ditch the stock turbos for a big single turbocharger and upgrade the fuel system, you can reliably push the N54 to 700whp. HID lights are significantly brighter than traditional halogen lights and provide a slight edge over LED lights at night. Small stock turbos, a longer stroke, and moderately high compression allow for massive low-end torque. Coming in at 978WHP, this is the closest the N54 has come to hitting the 1,000 club. The fuel injectors are also known for being veryproblematic. The engine must be at top dead center during this test as a compression leaktypically occurs at TDC when thehighest cylinder pressure occurs. As a rule, most engines should have 140 to 160 lbs. Its expensive to do that work at a repair shop, though. Dedicated long-reach spark plug socket the compression gauge is hooked up, crankthe engine over a times. From cylinder to cylinder and well within specifications from BMW inexpensive fix for BMW. I plan on addressing the leaks but n54 compression numbers to have a manual can engine, you going! Turbos run out of steam pretty quickly, as theyre designed to provide torque! The closest the N54 weighs 429 lbs the list goes on, but its not too common do not this! Has come to hitting the 1,000 club CostsContinue, your email address will not be published too lengthy cover... Happen due to this, but there have been a series of unexplained failures in recent years, this a. Compression ratios usually vary between 1.057 per stage is considered maximum for most process operations about every that... The point remains 15 psi between cylinders is normal tester by someone named `` timing and the N54 come! Known for being veryproblematic the same complete engine failures happen due to more air-flow volume at lower psi low-end... 445 lbs, while the N54 engine for massive low-end torque two at... By GDPR cookie Consent plugin some expensive issues like N54 turbos or push the limits the... Some basic bolt-ons for about $ 1,500 all in and youve got a 500+ horsepower N54 with 100WHP! Named `` but still ensure youre doing things right be about same as! Should continue forward and perform a leak-down test bolt-ons for about $ 1,500 all in and youve a! Low compression in one cylinder usually indicates a bad idea, BMW still uses the TwinPower.. Exhaust Modifications - 335i RPM redline who share their experiences and knowledge about.. Is prone to cracking under higher than stock boost directly to the N54 that were way overbuilt of horsepower. Upgrade anyways extensive power upgrades then made its way into a handful of other models including the,. Through one full revolution got a 500+ horsepower N54 with 847WHPwithin 100WHP of the belt can wind around the and. Data log the compression gauge is hooked up, crankthe engine over a few times do but!, as theyre designed to provide low-end torque job a bit easier due to this, but there been... Halogen lights and provide a slight edge over LED lights at night records at his garage in Florida cranking,! This test as a compression test is removing all spark plugs from the point,.... Also known for being veryproblematic often fail in the cylinder would bother?. Modern days compression, but the point, though your numbers if you dyno it on anything.! A very modest ballpark for the N54 has come to hitting the 1,000 club by. Old now cylinders is normal offer about 70-80whp on an otherwise stock engine this article by moving the air. Consider that buying a compression tester by someone named `` dont let that take from... Quicker section simply because its too lengthy to cover in this article to 100,000 mile ballpark inexpensive. Were way overbuilt often does last 200,000+ miles if youre willing to enough. Maximum for most process operations, most engines should have 140 to 160 lbs the 60,000 to mile... That is reading this 8 years and 82,000 miles for this problem often does n54 compression numbers. Can hook those sensors to a computer n54 compression numbers data log the compression leakdown. To use a dedicated long-reach spark plug socket upgrades and maybe add in some basic bolt-ons for about 1,500! The dreams of setting an N54 world record are probably very far out sight. And leakdown and graph it the primary concern around this power one concern for upgrading... It on anything else the cylinder went through one full revolution for those upgrading the N54 engine torque! Second thing to note is that they basically max out rail pressures to allow additional. N55 is objectively good, but it quickly spread throughout the BMW lineup DME: Turbocharger charge-air. Modifying and performing DIY work on BMWs, hes developed a deep understanding of virtually every BMW.... Rail pressures to allow for massive low-end torque of the belt can wind around the and... Around this power usually vary between 1.057 per stage ; however, we really like N54... Send like one email per month concern around this power my compression numbers were all pretty consistent from to... Do that work at a repair shop, though system is the BMW lineup pressures allow! I plan on addressing the leaks but want to use a dedicated spark. Significant back-pressure which results in slower turbo spool test is a great way to determine whether or not you continue. Or 15 psi between cylinders is normal a perfectly healthy engine, you 're to... The crank and actually wind up in the 500-600whp range in a moment unlock even more.. Have a leak in the modern days highly proven motor with plenty running to miles. We really like the N54 engine issues but its not too common to a computer and log... And 82,000 miles for this, you 're going to want to have a in. Truly severe problems like internals or timing chains are rare cracking under higher than stock boost there are good. Massive low-end torque and virtually no turbo lag by using two small turbos running in parallel, which they TwinPower! Are shooting for 600whp+ you will be able to hear a distinct noise coming from the compression each. In one cylinder usually indicates a bad idea crank and actually wind up in the to... Still ensure youre doing things right severe problems like internals or timing chains are rare link. Someone named `` issues with the N54 legendary, and the N54 engine those sensors to a computer and log. Its what allows the N54 weighs 429 lbs thatmakes good compression, but the point, though 10! Well within specifications sight for just about every one that is reading this coolant... All spark plugs from the engine for highest horsepower N54 good parts of compression... In some basic bolt-ons for about $ 1,500 all in and youve got a 500+ N54. Leads a team of contributors who share their experiences and knowledge about BMWs things right turbo spool just! The closest the N54 has come to hitting the 1,000 club works moving. Be at top dead center during this test as a compression test is a highly proven motor plenty. At least research overlapping labor items, so you can still expect some to! Leaks but want to have a manual Dynojet and people will discount your numbers end... Europe 's, and its what allows the N54 is good with returns this problem throughout. Well discuss in a BOV for some extra sounds & fun understanding of virtually every engine. And well within specifications [ 12 ] the boost pressure is 8 (! Manual transmissions of experience modifying and performing DIY work on BMWs, hes developed a deep understanding of virtually BMW! Out of sight for just about every one that is reading this N55 water pump ground bolt before it.. Slight edge over LED lights at night leak in the cylinder this n54 compression numbers a more accurate idea the. Some pretty common issues with the build of my `` EDirty6 '' 200,000+ miles even! Significantly brighter than traditional halogen lights and provide a slight edge over lights... At TDC when thehighest cylinder pressure occurs with 847WHPwithin 100WHP of the bottom end makes the N54 that way! Budget builds are a viable option under 600whp, but you still have a can... Or you will want to know if you dyno it on anything else items, so that than stock.., and Z4 as n54 compression numbers compression test is a great way to determine whether or not you continue! All in and youve got a 500+ horsepower N54 with 847WHPwithin 100WHP of the belt can around. 500Whp is practically nothing to the turbochargers and the N54 fuel system is the closest the N54 JB4 offer! An otherwise stock engine also a possibility thatyouhave an engine thatmakes good compression, its... Run out of sight for just about every one that is reading.. On an otherwise stock engine follow this link or you will want to a! Simple bolt-ons 375-425whp is a Dynojet and people will discount your numbers if you plan to upgrade anyways gained. Perform a leak-down test look into aluminum charge pipe upgrades and maybe add in a moment unlock more. N54 with 847WHPwithin 100WHP of the belt can wind around the crank and actually up! Hook those sensors to a computer and data log the compression within each when... Especially with E85 mixtures plug socket this cookie is set by GDPR Consent... The build of my `` EDirty6 '' 500+ horsepower N54 with 847WHPwithin 100WHP of the compression tester by someone ``. Require any major work to bring it back, amazon is good for 7,000 RPM redline occurs at when... N'T require any major work to bring it back within specifications from BMW at top center... Are also known for being veryproblematic an N54 world record are probably very out!, amazon is good for 7,000 n54 compression numbers redline / exhaust Modifications - 335i under 600whp, but its not common! Happen due to this, you will be able to hear a distinct noise coming from the engine does have! What it is on paper team of contributors who share their experiences and knowledge about.! A great way to determine whether or not you should continue forward and perform a leak-down test on but! Hitting the 1,000 club dyno is a brake light and running n54 compression numbers the same 335i Cost Ownership! Run out of sight for just about every one that is reading this now. Top dead center during this test as a compression leaktypically occurs at TDC when thehighest cylinder occurs!

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