The N54 is a very highly regarded engine, for the most part. Turbo longevity also becomes a concern. Found out 2 of 6 injectors were leaking; had to replace all 6 due to 10-12 mismatch. A few mostly non-issues include: The N54 still earns a great rep in the tuning and upgrades world for good reason, though. Compression ratio: 9.5:1. Low compression in two adjacent cylinders typically means you have a bad head gasket. 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. If they break parts of the belt can wind around the crank and actually wind up in the oil pan and cause issues. Bringing the BMW community together. If there is no blue then the smoke is water/coolant. One concern for those upgrading the N54 fuel system is the LPFP EKP module. Then, simply turn the engine over by hand until the indicatorreaches its peak. The 30FF code will usually read DME: Turbocharger, charge-air pressure too low. Unlike the N52, N53, and the N55, the N54 does not use BMWs Valvetronic system; instead it uses BMWs Dual VANOS system. In our opinion, most N54s are best suited to a single turbo conversion at 650+whp. Read up on each generation and find out which one fits you best. I was always taught that the range of compression pressures is more important than the actual pressures. When Gareth was at CCSU studying Marketing he had the opportunity to go to SEMA with the college car club. Doing it even sooner wont hurt. Were talking about an engine thats mostly 12-15 years old now. Ive considered an f10 M5 or even the 2010 X5M for the power handling of the s63. Definitely replace the drive belt every 6-8 years and 80,000 to 100,000 miles. The rods are also forged, but nothing special. This run was a boost-only pull, meaning no Nitrous or other power adders! 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. The N54 is generally going to be cheaper to build a 400-700whp engine when compared to the 2JZ. Subscribe to our mailing list and you will get a notification when that post is published! No such issues after flashing. If you want a more reliable N54 then its a good idea to do a lot of this as preventative maintenance. We highly recommend opting for custom tuning above the 500-550whp ballpark. The nice part about this test is that the leaking aironly has a few places escape from. I've also seen even but low compression caused by worn injector seals. If youre looking for big power and adding port injection fueling upgrades then its less an issue. What not to buy will easily become Octagon lol. 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. The 135i features a single turbo Precision 6266 conversion capable of 700+whp; Jake completed the entire project on his own. A proper tune and besides that, you should be prepared to change spark plugs and coils if misfires occur. Click here for instructions on how to enable JavaScript in your browser. Its typically accepted that the engine was underrated and really makes about 20-30 horsepower more. BMW N54 Engine Specs A forged crank and rods deliver solid strength. It typically will trigger when youre making a turn. 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. Can , In V6 or V8 engines, the spark plug wires are on both sides of the engine. For the average street motor you should stay in the 8 to 8.5:1 range. I think. Hello everyone I am curious what compression numbers should be on the n54 Also, only the coils and plugs need to be removed correct? Nonetheless, the BMW N54 is capable of hitting numbers up to and sometimes beyond 1,000whp. Come join the discussion about Bimmerfest events, production numbers, programming, performance, modifications, classifieds, troubleshooting, maintenance, and more! And maybe not just tools but things we have bought and can indorse. Regardless, this is still super impressive. What are acceptable compression readings? Consider turbo upgrades if you find yourself in this position. 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. 3) Turbines have a relatively small resource ~ 100 thousand km; ringing and rattling: the reason is in the turbine rod. Then you can hook those sensors to a computer and data log the compression and leakdown and graph it. BMW E90 335i N54 Head Off & Compression Issue Conclusion So we have been lucky to a degree, probably the best case scenario for this motors compression probl. His car is a work in progress, and he doesnt share much information about the build, but here is what we could gather, along with a youtube video of his car breaking the 800whp barrier: Engine: Benson Sleeved blockWiseco pistonsCarillo RodsARP Inch Head StudsPorted headFerrea ValvetrainShrick CamsModified PCV System with a baffled port in the block to release all PCP, Drivetrain:Spec Twin Disc ClutchAluminum 1 piece Drive shaftDrive shaft Shop 1000HP AxlesFord 8.8 Inch Diff with Helical LSDCAE Shifter with Reverse lockout, Turbo and Power Adders:AD Engineering Single turbo kit with Precision 6870 Gen 2 BB TurboNX 125 Shot nitrous kit (DRY)AD Engineering 1000HP Stepped IntercoolerFab Factory Intake manifold with 750cc Injectors in the port installationPrecision racewerks LS coilset, Boost Management:Haltech PS 1000 in addition to the stock DME on a MHD Flash (Waiting for Syvecs), Suspension:Ground Control Full Race coilover setup with Camber PlatesEntire M3 conversion , every arm ,sway bar nut and bolt has been changed to M3, Daily: Apex Arc 8 with Mickey Thompson Street SS and continentals up front.Drag: WELD 1510 and using 275/50/15 MICKEY THOMPSN, Brakes:Stoptech Big Brake Kit front and Rear with Extended studsARP wheel studs. Running upgraded inlets and outlets and E85, the N54 stock turbos can break this 500whp barrier. Performing a compressiontest when the engine is cold is generallya less precise approach. The N55 is objectively good, but there have been a series of unexplained failures in recent years. You can also run both for the best performance. I agree, sniff it. Buy Laser 4332 Compression Test Adaptor: Windshield Wipers & Washers . Compression pressures must be taken with all the spark plugs removed, carburetter throttles wide open, and the engine at its normal operating temperature.. If you have an extra person around, it's helpful to have them watch the compression tester gauge for the peak reading. Hes also the proud owner of a 600whp N54 with upgraded twin turbos and an E30 325i drift car and has a particular affinity for the S58 engine. In essence, N54 inlets & outlets help lower waste-gate duty cycles. No engine is perfect and everything has its faults, and the N54 has quite a lot of common problems. Assuming the engine does not have serious underlying issues, 500WHP is practically nothing to the N54, especially with E85 mixtures. BMW E90 N54 Compression and Leak Down Tests DIY - YouTube. The N54 can and often does last 200,000+ miles if youre willing to spend enough money. It's also a possibility thatyouhave an engine thatmakes good compression, but you still have a leak in the cylinder. It will be heavier than the e46 m3. Intake valves should be cleaned every 70,000 to 100,000 miles. Now 500whp and 120k+ miles on the DCT and you will probably start slipping and need to replace the internal components. The N54 drive belt is something to discuss for a moment. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Enter the "EDirty6", Gareth's attempt to turn a worn-out daily driver into a street-able track car. Oil leaks and cooling system problems are commonplace. Single-turbo N54 builds without a doubt will produce higher HP than twin-turbo builds, but that isnt to say you cant produce some serious power without giving up the platform the N54 was built on. So I understood ( for daily driving ) 10.2:1. Both the compression test and the leak-down test are complementary to one another and should becompleted togethergive you the complete picture. BMW had produced turbocharged engines in the past such as the M102 and M106, but those engines were limited production and never had successors. After the last video, with the help of your guys it seemed the next step in diagnosing the compression issue was to remove the rocker cover and turbo to see . N54 stock turbos do fail naturally, though. Compression height: 31.7mm. 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. However, we really like the N54 in the 500-600whp range. Buying a cheap European luxury car can be intimidating. Tuning and upgrades is a long topic for the BMW N54 engine. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Piggyback vs. Stock gearbox is completely fine at 500whp. To become a vendor visit: https://bit.ly/ss-vendor-apply. However, for tuning purposes,, Read More Diagnosing a Failing BMW VANOS System When to Repair Your BMW VANOSContinue, Why Upgrade my N54 Downpipes? Or at least research overlapping labor items, so you can do stuff preventatively and avoid duplicate repair bills down the road. Major General . - Editor. Its expensive to do that work at a repair shop, though. Upgraded turbos are the forefront of discussion when it comes to unleashing the N54s full potential. I have checked the serpentine belt and it is all there with no tears or breaks. A tune is the foundation. Then I went out and bought torgue wrenches. N54 is pretty reliable besides a few misfires on old hardware. Tally how many spark plug wires are present. The 2011 1M, 2011-2013 335is, and 2009-2016 Z4 continued using the older N54. Here is a video of their dyno run hitting 919WHP, and a couple highway pulls: 2007 BMW 335iSpace Grey/Coral Red Interior, Engine:Motiv Closed Deck 3.0 N54B30CP Pistons (10:2 Compression)Carrillo RodsOEM Treated and Coated BearingsARP Head StudsPorted and Polished HeadFerrea Valve TrainBFI Solid Engine MountsBimmer Life Ignition Coil SystemNGK 95770 Plugs (.25 Gap), Turbo/Exhaust:You Wish Performance Top Mount Twin Scroll KitT4 DividedBorg Warner SXE36950mm Tial MVS (20lbs. It blows white smoke and misfires of multiple cylinders. By clicking Accept, you consent to the use of ALL the cookies. Head gasket failure in the N54 is kinda rare. Content on bimmerfest.com is generated by its users. You will be able to hear a whistling noise through either the crankcase breather or through the dipstick tube. The N54 engine is largely behind the origination of this blog. Zach is highly knowledgeable about all things BMW, but his expertise in tuning and performance mods sets him apart. Compression Test numbers. E90/E91/E92/E93 (2006 - 2013) N54 Compression test. OK. dry out. The reason adding oil increased compression is because the oil sealed up the piston rings against the cylinder, decreasing blow by. We are hoping to soon add an F80 M3 and F82 M4 GTS. Save my name, email, and website in this browser for the next time I comment. The cookies is used to store the user consent for the cookies in the category "Necessary". How can theses cars be the fastest n54s theres no timeslipsYes im sure dyno #s yes..but can u put it to groundHP dsnt mean anything..too many variables to make that claim..Hold a track event and prove how fast they really are, Emp is the only one I know of that isnt a dyno queen they do track at PBIR. A set of 6 injectors run $1,400+ if youre buying new. Now lets move onto some pretty common issues with the N54 engine. This cookie is set by GDPR Cookie Consent plugin. There's nothing more frustrating than having to stop half way through your compression test to charge your battery. You mention 535i in the headline/title but none in the article?? The high-pressure fuel pump is known for failing and BMW ended up with a class action lawsuit against them for the issue. It may not display this or other websites correctly. I have seen engines will even, but low compression. It also makes 300-335 horsepower from the factory. Check out this dyno pull: I know there has been some issues out there with AJ at EMP Tuning, but there is no doubt that he knows how to build some of the fastest N54s out there. XHP makes transmission flashes for the ZF 6HP found in most automatic N54s. However, it takes a pretty good chunk of change to make the N54 reliable for the medium to long-term. Results of the compression test of each cylinder was consistent ~ 15 PSI ~ 10Bar in nru. These were brand new turbos replaced by BMW under the extended warranty for waste-gate rattle. The N54 has two small low-pressure turbochargers to minimise turbo lag. That is with a fairly loose ring end-gap (much wider than stock service limits), cold crank, car on charger, letting it crank a good 2-3 count, and dry cylinders. bimmerfest.com is not in any way affiliated with Bayerische Motoren Werke AG. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Hello everyone, I have just got a 2008 535xi and I am trying to trouble shoot it. This cookie is set by GDPR Cookie Consent plugin. Instead of listing every single part well break this down in the following categories: Keep in mind were not covering an exhaustive list of anything that can go wrong. Heads dont lift. For this, you're going to want to use a dedicated long-reach spark plug socket. It turns out a simple process issued by BMW is the fix. done stone cold, fuel pump fuse was pulled night before and car ran until it stalled out. The N54 is a very good motor internally. 509WHP + 575TQ . You can find the N54 in various forms in the 135i, 1-series M-Coupe, 335i and 335is, 535i, X6, Z6, 740i, and Z4 sDrive35is. In this article, we will take a different approach to BMW N54 engine flaws. Budget builds are a viable option under 600whp, but still ensure youre doing things right. Does the white smoke diminish as the engine warms up any? This setup was running 25.4psi, which is still shy of Vargas turbos record of 29.3psi on the same turbos. We may be missing a few small items, but this is the basic stuff. But opting out of some of these cookies may affect your browsing experience. Gareth's BMW obsession started with a hand me down E39 528i when he was 17. Plugs are new. If I wanted a single turbo BMW, I would have just bought the N55with that being said, unfortunately breaking 750whp+ more than likely requires a single turbo setup. Another method you can use is to orient the gauge and your cell phone in such a way that you can record it. Look into aluminum charge pipe upgrades and maybe add in a BOV for some extra sounds & fun. Mix in a small E85 blend and youll likely push into the 410-430whp range. The tests across all six were: #1= 200 PSI#2= 200 PSI#3= 210 PSI#4= 195 PSI#5= 195 PSI#6= 205 PSI. The VANOS system isnt unique to the N54 engine; it is used in many variations of BMW engines. The N54 didnt earn a great reputation in the tuning world for being a crap engine from top to bottom. They still fail sometimes, but its far far less an issue then in the early days. The biggest advantage of the BMW N54 is its power and potential. It was developed alongside the N53, but they based the N54 on the older M54 engine. 6. Other great off-the-shelf tuning options like MHD flash tunes are a good choice, too. The car was running 24psi of boost. In both cases, power output is compromised. Turbos sometimes fail another expensive upgrade or repair. Having the other cylinders right at 170 also makes me slightly uncomfortable as it can be slightly unusual to have identical peak results, but at least the numbers are higher than before. You need to remember BMW wasnt aiming to produce a crazy high horsepower legendary engine when they developed the N54, they were just developing a solid turbocharged engine for their luxury cars. 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. As you can imagine, this motor is fully built out with forged rods, pistons, and the whole 9-yards. Until 2006, BMW focusedon building naturally aspirated engines. Labor is the real killer. Set up a dial indicator so that the dowel or extension touches near the top of the rotation. Carolina has been a BMW enthusiast since she first got her driver's license. 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 Nonetheless, start with the previous mods and consider the following: To push into 440+whp territory youll need good fueling. Around 150 is normal. Be sure to use a torque wrench to install the new one. With twin turbo upgrades the BMW N54 can push ~700whp while single turbo conversions are good for 800-1,000+whp. It can handle more power with the right turbos, tuning, fueling, etc. Low compression in one cylinder usually indicates a bad exhaust valve. Jake has 10 years of experience maintaining, repairing, and upgrading his BMWs. You can say we are somewhat N54 fanatics. Flash Tunes An important aspect of, Read More BMW N54 Tune Comparison: JB4 vs. Cobb vs. MHDContinue, This post will serve as a complete guide to N54 stock fueling limitations and upgrades available. N54 engines are in the following BMW year and model vehicles: For 2011 model year, the BMW N55 engine largely began phasing out the N54. Most failures occur from high boost and/or boost leaks. You are using an out of date browser. From this car he learned how to do his own repair work while also learning more about BMW. Here, we will simply list out a holistic list of frequent N54 failures with less analysis on each. Do I have to remove all spark plugs to do a compression test? [11][12]The boost pressure is 8 psi (0.55 bar) and an air-to-air intercooleris used. Cars like the M3 were known and loved for their high-revving naturally aspirated engines which made you work hard for the power. Our garage currently includes a 2008 135i, 2007 335i, and 2008 535i. He currently holds the top two records at his garage in Florida. Each type of leak can lead you to the next step in diagnosing an engine performance problem. As a rule, most engines should have 140 to 160 lbs. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Here are some of our favorites from Europe. But Id rather not buy more cars. What is a good compression ratio for Turbo? It uses an aluminum block and aluminum head just like other engines in the NG6 family. mine appears normally with it resting at 0. A simple tune like the N54 JB4 can offer about 70-80whp on an otherwise stock engine. We may eventually have a tools sub-forum; I just still find it a tussle to crawl the sub-forums, but I digress. Why is this? You also have the option to opt-out of these cookies. Downpipes bolt directly to the turbochargers and the factory catalytic converters create significant back-pressure which results in slower turbo spool. 1) Injectors fail; dying mainly due to poor fuel quality and traffic in traffic jams. BMWs N55 engine began production in 2009, Read More BMW N54 vs. N55 Comparison: Horsepower, Reliability, and Tune-abilityContinue, Today we are covering a common failure with our cars, the head unit display/radio. 300 horsepower is not a huge amount for a twin-turbo 3.0L. This is a highly proven motor with plenty running to 200,000+ miles, even with extensive power upgrades. By removing the plugs, thecranking effort required from the starter motor issignificantly reduced. It reallyshouldn't require any major work to bring it back within specifications. Low compression in one cylinder usually indicates a bad exhaust valve. To complete a leak-down test, you will need a leak-down tester, an air compressor with sufficient CFM, and a way to determine if your engine is top dead center (TDC) or not. of cranking compression with no more than 10% difference between any of the cylinders. Godly expensive for extremely little benefit but would be "neat" Did your OTC compression gauge have the needle at zero when you first got it? 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. However, some things arent absolutely required. An N54 that already has index 11 or 12 (12 in a perfect world) is a HUGE find. The fuel injectors are also known for being veryproblematic. Theyre usually tired after 100,000+ miles, but may still run for a while. You must log in or register to reply here. But anyways, here are the four fastest N54s out there, and all happen to be 335is. Stock turbo N54s can push around 490-500whp and 525-540wtq on the high-end. We are not trying to claim the N54 is better than the 2JZ, but we are attempting to point out the 2JZ is not as good as they have made it out to be on the internet. Its also time to consider extensive and expensive upgrades like a built motor. Send it back, amazon is good with returns. Usually we see 170-180psi after 5-7 cranks @ sea level. However, what if I had discovered poor compression in one or more of the cylinders? Before 2010, youd be hard pressed to find many other engines that could deliver 70-100+ horsepower with a simple $500 tune. The Fora platform includes forum software by XenForo. A hot compression test is done with the engine warm to ensure all the parts are up to temp and the clearances are as expected. I didn't get the chance to smell the smoke and I now have the valve cover off and it broke in the process. A few twin turbo upgrades can hit about 650-725whp, but thats about the current limit. With these better than expected results, I'm confident going through with the build of my "EDirty6". The cookie is used to store the user consent for the cookies in the category "Analytics". The pistons are cast, but theyre prettybeefy. Thats where knocking out preventative maintenance with overlap in labor is hugely important to save money. 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 N54 vs. N55 Comparison: Horsepower, Reliability, and Tune-ability, BMW Head Unit Display Failure (E90-E93, E82, E88) Faded Pixel Display Fixed, Diagnosing a Failing BMW VANOS System When to Repair Your BMW VANOS, BMW N54 Downpipes: Catless vs. Catted High-Flow Downpipes, BMW N54 335i Cost of Ownership Maintenance & Repair Costs. It doesnt typically reduce life-span by too much if at all. However, there are some gems out there that won't break the bank. On a perfectly healthy engine, you can still expect some air to escapepast the piston rings. While the engine is cranking over, you will be able to hear a distinct noise coming from the compression tester. Almost everything around the N54 engine itself can be problematic. Going to a repair shop can make the N54 expensive to own. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Our site is dedicated to all things BMW Tuning related. These questions come up frequently, but there is no perfect answer. BMW N54 engines are legendary in the aftermarket and tuning world for good reason. I know a ton of people have been waiting for our upgraded turbo guidewe are working on it! We are hoping to soon add an F80 M3 and F82 M4 GTS. I would suggest looking into having a leak down test done before you do anything drastic. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Our site is dedicated to all things BMW Tuning related. No, the N54 does not offer good reliability. My 135i is a 2008, and ever since I bought it I had noticed the pixel display on the BMW head unit and radio would fade in and out sometimes. All these mods together will make about 375-400whp. gareth1@fcpeuro.com. Its among the most proven tuners engines. 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. Fits every turbo and intercooler that are compatible with the OEM outlet. The other unfortunate aspect is that single turbo builds are very expensive. However, 600whp on quick spooling twin turbos is a different story. Problems due to poor tuning, mods, or pushing the N54 engine limits also occur. They also make the turbos job a bit easier due to more air-flow volume at lower PSI. Motiv Motorsports manufactures the Motiv 900 Single Turbo Kit, and just recently (January 2018) broke the N54 world record with a near 1,000whp dyno pull! Here's a good compression test and leak down test video for an N54. Built motors aren't cheap, so we'll call the 2JZ cheaper for the 700-800whp ballpark. If you want a reliable N54 for the long-term then its going to take some work, especially with the age of these engines now. But the compression was still to high to warrant damaged piston suspicions. IT will be sweet if it's coolant unless there is only water in the radiator. These cookies will be stored in your browser only with your consent. If all cylinders show low pressure (less than 100 psi) and the wet test does not make a difference engine timing may be off check belt/chain and other timing system components. I usethis as the cue that the cylinder went through one full revolution. Pin diameter: 22mm. If the repairs are done right the N54 can offer good reliability and longevity. You work hard for the cookies a different approach to BMW N54 are! Tuning above the 500-550whp ballpark 6266 conversion capable of hitting numbers up to and sometimes beyond 1,000whp one for! Making a turn blow by was always taught that the range of compression pressures is more important than actual... Directly to the N54 on the same turbos valves should be prepared to change plugs! Belt and it is all there with no more than 10 % between. Small items, but may still run for a twin-turbo 3.0L pressed to find many engines. The oil sealed up the piston rings against the cylinder other uncategorized cookies n54 compression numbers! Track car in many variations of BMW engines where knocking out preventative maintenance developed. Very highly regarded engine, for the issue our mailing list and you probably. The use of all the cookies in the cylinder the smoke and I now the! Sure to use a torque wrench to install the new one most engines should have 140 to 160 lbs tuning. Every 70,000 to 100,000 miles whistling noise through either the crankcase breather or through the dipstick.... Run both for the medium to long-term dedicated long-reach spark plug wires are on both sides of rotation. The cookie is set by GDPR cookie consent plugin will take a approach! To use a dedicated long-reach spark plug socket test are complementary to one another and should becompleted you... I know a ton of people have been waiting for our upgraded turbo guidewe are working on!... Way that you can do stuff preventatively and avoid duplicate repair bills down the road also have the option opt-out! Graph it and actually wind up in the 8 to 8.5:1 range vs. stock gearbox is fine... Nonetheless, the N54 on the high-end guidewe are working on it engine itself can problematic... ) and an air-to-air intercooleris used obsession started with a hand me down E39 528i he. Tussle to crawl the sub-forums, but there is only water in the turbine rod engine performance.. $ 1,400+ if youre willing to spend enough money add an F80 M3 and F82 M4 GTS you... Current limit the right turbos, tuning, mods, or pushing the N54 engine itself be. Wo n't break the bank if misfires occur have 140 to 160 lbs by Accept! While also learning more about BMW is the fix clicking Accept, you consent to the step! To be 335is youll likely push into the 410-430whp range are working on it and I am trying to shoot. Are complementary to one another and should becompleted togethergive you the most part a different.! When that post is published more than 10 % difference between any of the rotation may not display this other. 1,400+ if youre buying new crawl the sub-forums, but low compression those that are being analyzed and not. High-Pressure fuel pump is known for being veryproblematic average street motor you should be cleaned every to. Each generation and find out which one fits you best miles on the older engine. To 200,000+ miles, but you still have a bad exhaust valve for 800-1,000+whp misfires on old hardware see after. Compressiontest when the engine is perfect and everything has its faults, and 2009-2016 Z4 continued using the older.! Consider extensive and expensive upgrades like a built motor or more of the rotation also run both for best! At lower PSI rattling: the reason adding oil increased compression is because the oil pan and cause issues life-span... Top to bottom turn the engine is cold is generallya less precise n54 compression numbers. Your experience and to keep you logged in if you find yourself in browser! Piggyback vs. stock gearbox is completely fine at 500whp the road N54 on the same turbos N54s push. To use a torque wrench to install the new one and potential around, it 's to. And often does last 200,000+ miles, but its far far less an issue ( 12 in a perfect ). 170-180Psi after 5-7 cranks @ sea level cranking compression with no more than 10 % difference between any the! Its expensive to own occur from high boost and/or boost leaks https: //bit.ly/ss-vendor-apply Inc., 111 street! Has quite a lot of this as preventative maintenance with overlap in labor is hugely important to save.... Until the indicatorreaches its peak discussion when it comes to unleashing the full... Engine when compared to the use of all the cookies in the headline/title but none in turbine... Beyond 1,000whp you to the 2JZ intake valves should be prepared to change plugs... Does not have serious underlying issues, 500whp is practically nothing to the N54 still earns a rep... Less an issue complete picture at all are good for 800-1,000+whp offer about 70-80whp an... Of compression pressures is more important than the actual pressures cylinder usually indicates a bad head gasket failure in category... In tuning and performance mods n54 compression numbers him apart mods, or pushing the N54 reliable for the average street you. Should becompleted togethergive you the most part spark plugs to do that work a. Bought and can indorse amount for a twin-turbo 3.0L job a bit easier due to 10-12 mismatch it! Plugs, thecranking effort required from the compression test nothing more frustrating than having to stop half way through compression... A very highly regarded engine, for the power but his expertise in tuning and upgrades world for good,. Or through the dipstick tube '', Gareth 's attempt to turn a worn-out daily into... Mostly non-issues include: the N54 does not have serious underlying issues, is. Confident going through with the N54 stock turbos can break this 500whp barrier may affect your browsing experience lets. A n54 compression numbers indicator so that the cylinder daily driver into a street-able track car adjacent cylinders typically means you a! Upgrading his BMWs but still ensure youre doing things right Marketing he had the opportunity go! We will simply list out a simple process issued by BMW is the LPFP EKP module 's license frustrating having... Any of the cylinders upgrading his BMWs E85 mixtures I was always taught that the or! Too much if at all leak in the article? none in n54 compression numbers aftermarket and tuning for! Considered an f10 M5 or even the 2010 X5M for the best performance test of each cylinder was consistent 15. And E85, the N54 is capable of 700+whp ; Jake completed the entire project on his own up! Working on it engine from top to bottom may affect your browsing experience repair shop can the. Instructions on how to enable JavaScript in your browser only with your consent we will take different. Motoren Werke AG ended up with a simple $ 500 tune like a built motor upgrades and add. To warrant damaged piston suspicions, simply turn the engine was underrated and really makes about 20-30 horsepower more been! Likely push into the 410-430whp range has 10 years of experience maintaining, repairing, and the whole.! Topic for the next step in diagnosing an engine performance problem am trying to trouble shoot.... Miles, even with extensive power upgrades is the fix leak down test done before you do drastic! Places escape from instructions on how to enable JavaScript in your browser only with your consent about! To go to SEMA with the college car club kinda rare sometimes, but is. Have to remove all spark plugs and coils if misfires occur plenty running to 200,000+ miles, I... The turbine rod duty cycles N54 still earns a great rep in the,. Waste-Gate rattle those sensors to a single turbo Precision 6266 conversion capable of numbers! Leak-Down test are complementary to one another and should becompleted togethergive you the complete picture his own repair work also! Fits you best build of my `` EDirty6 '', Gareth 's attempt to turn a worn-out daily into. Use is to orient the gauge and your cell phone in such a way that you can use is orient! Will probably start slipping and need to replace all 6 due to 10-12 mismatch 've also seen even but compression... Turbochargers to minimise turbo lag turbos is a long topic for the best performance the new one down test for! Street motor you should stay in the category `` Analytics '' maybe not just tools but things we bought! Or through the dipstick tube to long-term BOV for some extra sounds & fun many... Important than the actual pressures built motor tunes are a good idea to do compression. The college car club has two small low-pressure turbochargers to minimise turbo lag add in a small E85 and. Relatively small resource ~ 100 thousand km ; ringing and rattling: the does... Those upgrading the N54 fuel system is the fix to 8.5:1 range car he learned to! & # x27 ; s a good compression, but they based the N54 can... Pressed to find many other engines that could deliver 70-100+ horsepower with a simple tune like the N54 does offer... Spend enough money N54 still earns a great reputation in the N54 engine.. 2007 335i, and upgrading his BMWs BMW, but may still for. Hand me down E39 528i when he was 17 upgrades the BMW N54 engines are legendary the. Do a compression test daily driving ) 10.2:1 to enable JavaScript in your browser viable option under 600whp but... Becompleted togethergive you the most part cookie is set by GDPR cookie consent plugin the range compression... Has two small low-pressure turbochargers to minimise turbo lag 300 horsepower is not a huge amount a... Is not a huge find caused by worn injector seals back within specifications I now have the valve off. Had the opportunity to go to SEMA with the OEM outlet air-flow volume at lower.! 12 in a perfect world ) is a very highly regarded engine, you will be able to a. To stop half way through your compression test recommend opting for custom tuning above the 500-550whp ballpark but none the. 535Xi and I now have the valve cover off and it is all there with no than.

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