A compression test is a great way to determine whether or not you should continue forward and perform a leak-down test. Its an area the N54 really excels, which makes it a deadly engine in roll races. If you don't have someone toassist youwith the gauge while you're cranking the engine over, don't worry becauseyou can do it yourself. So I understood ( for daily driving ) 10.2:1. The reason adding oil increased compression is because the oil sealed up the piston rings against the cylinder, decreasing blow by. Required fields are marked *. What are the limits of the stock N54 fueling system? The list goes on, but the point remains. Thanks. A forged crank and rods deliver solid strength. But the compression was still to high to warrant damaged piston suspicions. Piston crown volume: -21.5cc. Unlike the N52, N53, and the N55, the N54 does not use BMW's Valvetronic system; instead it uses BMW's Dual VANOS system. Totally Ported head with large intake valves, Manley springs, Ti Retainer, Stock cameras. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Let us know in the comments below. $1,500 all in and youve got a 500+ horsepower N54, detailed guide on the 8 most common N54 problems, Oil filter housing $350-500 (walnut blast while replacing), Oil pan gasket + bolts $50-75 (consider engine + trans mounts, subframe bushings). The car was running 24psi of boost. Combine that with DOHC and variable valve timing and the N54 is good for 7,000 RPM redline. Factory BMW pistons are cast aluminum, which is fine for the intended power output and durability. Spring)You Wish Performance 4 Exhaust, Fueling:Fuel-It Stage 4 Bucketless Platinum w/Ethanol SensorFuelab Fuel Pressure Regulator on the return line1000cc Injectors, Tuning/Boost Management:Tuned byEMP TUNINGMHDBoost BoxSplit Second AIC6 Fuel ControllerN2MB Wotbox, Transmission:Stock 6 Speed Unopened GearboxSpec Twin Disc Clutch (Custom Order)Steel Single Mass FlywheelE46 M3 Trans MountsRTD Low Profile Short Throw Shifter, Differential:M-Factory Limited SlipUpgraded Diff BushingsBoost Addictions Diff BraceStock Axles (For Now), Suspension:Airlift 3H Air Kit (Upgraded Components For Drag)4 Gallon Tank Single Compressor (Dual On Stand By), Interior:Braum Red Leather Bucket SeatsSparco Seat BeltsAutopower Safety 4 Point Roll Cage EMP Tablet Mount, Exterior:Daily Wheels BBS RC302 Concaves 18Drag Wheels Jegs 15 RimsTires Hoosier 275-60-15BMW Aero Front LipM3 Side SkirtsM-Tech Rear BumperCSL Carbon Fiber TrunkEMP Tuning Headlight. Reliability is a case by case basis; some may experience endless issues while others may go 100,000+ miles without any significant problems. Amit is running 35psi currently which is insane, and has plans to get that number up to 40psi for 2018. Itwas developed alongside the N53, but they based the N54 on the older M54 engine. A lot of the parts are reasonably priced. I was always taught that the range of compression pressures is more important than the actual pressures. The first issue to discuss is waste-gate rattle on N54 turbos. Its specs are nothing special on paper, but the N54 delivers in the real world. Versions. Lets take a look at the world records. Better to change immediately with a thermostat, because the age of this little bastard is also short and miserable. bimmerfest.com is an independent BMW enthusiast website owned and operated by VerticalScope Inc. If the repairs are done right the N54 can offer good reliability and longevity. Jake has 10 years of experience maintaining, repairing, and upgrading his BMWs. The 2023 FCP Euro Winter Kit Sale is here with a fantastic offer on all of our kits. While the engine is cranking over, you will be able to hear a distinct noise coming from the compression tester. This is the only automatic transmission featured on this listwhile the manual transmissions can handle much more HP, 500whp wont break your automatic transmission. sensors sometimes fail with that kind of age. With simple bolt-ons 375-425whp is a very modest ballpark for the N54 engine. No upgrades exist as far as were aware, and none have ever failed on their own (rod bearings can ruin the crank if they go bad, though). At this point, install the leak-down tester threaded adapter into the cylinder head and hook up the tester to the adapter and air supply. Sort by date Sort by votes In everything that surrounds our engine, smart-ass engineers have laid the shortest possible resource (on purpose! The DCT transmissions just cant handle the torque that a manual can. Come join the discussion about Bimmerfest events, production numbers, programming, performance, modifications, classifieds, troubleshooting, maintenance, and more! A lot of these pop up in the 50,000 to 80,000 mile range. Save my name, email, and website in this browser for the next time I comment. hbspt.cta._relativeUrls=true;hbspt.cta.load(3867393, '13f0880f-a4d7-45ef-b212-169a84bd06a5', {"useNewLoader":"true","region":"na1"}); Gareth is the The leak-down gauge will show you the percentage of air that is leaking out of the cylinder. Theyre usually tired after 100,000+ miles, but may still run for a while. Why am I featuring it at #4 instead of #2? _____ You must log in or register to reply here. n54 heavy misfire after new injectors + coding Hey everybody i figure i'd cross post here as well as the forums to get the most impressions. Now lets move onto some pretty common issues with the N54 engine. The N54 can also hang with owners wanting even more power. When divingdeeper into theoverall health of your engine, youneed to perform a leak-down test as well. Item model number 4332 : Manufacturer Part Number LAS4332 : Additional Information. Subscribe to our mailing list and you will get a notification when that post is published! The N54 declaring 523whp would likely just be putting down 470whp on a Dynojet. Truly severe problems like internals or timing chains are rare. Occurs during a cold start; It will be heavier than the e46 m3. Do NOT follow this link or you will be banned from the site! The exact results of my test were: #1= 12%#2= 8%#3=11%#4=10%#5=13%#6 =11%. For this, you're going to want to use a dedicated long-reach spark plug socket. Nonetheless, start with the previous mods and consider the following: To push into 440+whp territory youll need good fueling. 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. Pin diameter: 22mm. The first step in performing a compression test is removing all spark plugs from the engine. If you have an extra person around, it's helpful to have them watch the compression tester gauge for the peak reading. An upgraded twin-turbo setup is far cheaper than swapping in a single-turbo setup and come-on, why have only one turbo when you can have two? Its especially true at 120,000+ miles. N54 HPFP Failure CEL Codes: These are common codes, certain ones might not indicate a failed HPFP (such as a cylinder misfire code) P142E: low pressure in HPFP system - injection disables to protect catalytic converters 2FBF: Fuel pressure at injection release 2FBE: Fuel pressure after motor stop 29DC: Cylinder injection switch off Its V8 weighs 445 lbs, while the N54 weighs 429 lbs. Head gasket failure in the N54 is kinda rare. If you want a more reliable N54 then its a good idea to do a lot of this as preventative maintenance. The 22V-119 safety recall covers all you need to know about this issue. While , And despite their simplicity, a cold air intake actually provides a decent horsepower boost for a small investment. We post engine specific tuning guides, maintenance guides, DIY repairs, etc. Found out 2 of 6 injectors were leaking; had to replace all 6 due to 10-12 mismatch. A lot of the stuff around the engine is problematic, but the actual engine itself isnt a major concern. The first step in performing a compression test is removing all spark plugs from the engine. I've also seen even but low compression caused by worn injector seals. BMW N54 engines can be an awesome purchase for those willing to DIY. One of the biggest restrictions on the N54 powered 135i, 335i and 535i is the factory catted downpipes. 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. The N54 engine is largely behind the origination of this blog. Some even fail by 40,000 miles or sooner. He currently holds the top two records at his garage in Florida. Check these out to see just how in-depth we go to make them. The new design also showed with a number of ongoing problems in the early days. With a good set of summer tires youll put the power down pretty well. A compression test determines the relative compression between individual cylinders while a leak-down test determines the sealing ability of the valves, head gasket, and piston rings. The N54 oil pan is fine to simply replace the gasket. For the average street motor you should stay in the 8 to 8.5:1 range. No, the N54 does not offer good reliability. Budget builds are a viable option under 600whp, but still ensure youre doing things right. Oil leaks and cooling system problems are commonplace. The 3 primary oil leaks are: On high mileage examples, we strongly encourage replacement of the full oil filter housing and valve cover. Compression is everything in an enginepoor compression can cause misfiresas well as poor ignition. These cookies will be stored in your browser only with your consent. Valve covers crack regularly. We specify torque as its much tougher on the transmission than power alone. Enter the "EDirty6", Gareth's attempt to turn a worn-out daily driver into a street-able track car. Poor compression can also have an effect on engine performance inregards to the balance of poweracross each cylinder. But Id rather not buy more cars. The cookie is used to store the user consent for the cookies in the category "Performance". I meant, mine did not look like that. - Editor. 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. I plan on addressing the leaks but want to know if you guys would bother??? Then the other simple N54 upgrades well discuss in a moment unlock even more potential. Can you do a compression test on a cold engine? The list could go on and on. Compression ratio: 9.5:1. A simple tune like the N54 JB4 can offer about 70-80whp on an otherwise stock engine. Who would have thought it would be off by that much Super post. The dreams of setting an N54 world record are probably very far out of sight for just about every one that is reading this. In essence, N54 inlets & outlets help lower waste-gate duty cycles. Injectors and HPFP had their early problems, and theyre expensive repairs. Nonetheless, there are generally accepted limits for the N54. I did a dance and took photos. Necessary cookies are absolutely essential for the website to function properly. Does it smell sweet? For example, a $50 oil pan gasket can run about $600-1,000 in labor. 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. See if you can find out if the serpentine belt was recently replaced. The 30FF BMW fault code is one you do not want to see on your BMW. Ken is a leading N54 tuner and offers great custom tunes for anyone looking to improve performance and reliability by tailoring their tune to their specific car and setup. Most engines drive the water pump with a serpentine belt. BMW N54 rods, bearings, pistons, and cranks dont have issues. 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. Doing it even sooner wont hurt. They still fail sometimes, but its far far less an issue then in the early days. The BMW N54 engine itself is nearly flawless. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Do it right and spend a bit extra on parts for peace of mind. Set up a dial indicator so that the dowel or extension touches near the top of the rotation. It was developed alongside the N53, but they based the N54 on the older M54 engine. Click here for instructions on how to enable JavaScript in your browser. These cookies track visitors across websites and collect information to provide customized ads. Nonetheless, the BMW N54 is capable of hitting numbers up to and sometimes beyond 1,000whp. Hey guys, Short update about the n54 engine, I acquired a n54. The N54 is part of the NG6 BMW engine family. Once you reach the limits of the stock turbos (or blow them up pushing the limits) its time to consider turbo upgrades. It typically will trigger when youre making a turn. We recommend starting with the basic bolt-on mods and going from there. Thanks for your reply. Compression height: 31.7mm. It also makes 300-335 horsepower from the factory. You will be able to hear a whistling noise through either the crankcase breather or through the dipstick tube. You also have the option to opt-out of these cookies. The N54 began production in 2006 and first appeared in the 2007 BMW 335i; in 2008, the N54 was introduced along with the 135i and 535i. A $400 water pump can add another $400-600 in labor. At what power do N54 LPFPs, HPFPs, or port injection become necessary? All of these are prone to cracking and developing leaks. However, you may be left stranded from time to time. More on that in a moment. The list of mods to push about 375-425whp looks something like this: Again, this is a very simple list. i tested using 2 different brand gauges just to be sure. No such issues after flashing. Compression in cylinder 1 was down and cylinder 1 spark plug was very oily. 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? Click here for instructions on how to enable JavaScript in your browser. In general, the internals of the N54 are very reliable and offer great longevity. Going to a repair shop can make the N54 expensive to own. Look into aluminum charge pipe upgrades and maybe add in a BOV for some extra sounds & fun. Your email address will not be published. Posts. This cookie is set by GDPR Cookie Consent plugin. Includes everything necessary to upgrade from factory chargepipe. We are hoping to soon add an F80 M3 and F82 M4 GTS. Transmission & engine mounts and subframe bushings arent a bad idea. 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. However, since the air and fuel are both more highly compressed, there will be more heat. This cookie is set by GDPR Cookie Consent plugin. The entire cooling system can be problematic. 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. Now 500whp and 120k+ miles on the DCT and you will probably start slipping and need to replace the internal components. In both cases, power output is compromised. Quite often, the temperature rise of the gas during the compression dictates a limit for the safe or reasonable pressure rise. 3) Turbines have a relatively small resource ~ 100 thousand km; ringing and rattling: the reason is in the turbine rod. BMW began phasing out the N54 in 2009 and replaced it with the N55 which is arguably worse than the N54. You can take the same approach with any of the list. Its V8 weighs 445 lbs, while the N54 weighs 429 lbs. 2) The fuel pump is dying (the low quality of gasoline, driving on an empty tank and the reluctance of the owners to regularly change the filter made him a bad name). The two cars above didnt feature any NOS to hit their numbers, so they would likely put down more than this N54 if they had. Sure, natural and fluky failures do happen sometimes. I can only speak for the results I got on my built motor which reads right around ~200-210psi. The N54 is a very good motor internally. A set of 6 injectors run $1,400+ if youre buying new. Specs for the BMW N54 inline-6 twin turbo engine are as follows: The BMW N54 engine utilizes a twin turbo, direct gasoline injection design. It can be reliable with the right maintenance, mods, and upgrades. There is no effective long-term solution, so get used to addressing the water pump & t-stat often. All those issues aside, the N54 has won five straight International Engine of the Year awards and three straight Wards 10 Best Engines awards. The list of problems is often longer than the list of what isnt an issue. 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. If youre at all a stickler for having a clean dash like I am, it will drive you nuts. These were brand new turbos replaced by BMW under the extended warranty for waste-gate rattle. 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 BMW N54 engine made its debut in the 2007 E90/E92 335i. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". These questions come up frequently, but there is no perfect answer. I know a ton of people have been waiting for our upgraded turbo guidewe are working on it! BMW N54 Engine Specs A forged crank and rods deliver solid strength. Healthy engines should have compression over 100 psi per cylinder, with no more than 10 percent variation between the highest and lowest readings. Tuning and upgrades is a long topic for the BMW N54 engine. This is a huge deviation from n. Unfortunately, this is possibly the easiest way to write about BMW N54 engine problems. Here are some of our favorites from Europe. These 5 come in under $10,000. Definitely a huge improvement, overall. Almost all the cams will fall under the range of 104-116 with nice idling. 5) Over time, from high temperatures gaskets, pipes, etc. 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. In this article, we discuss everything about the BMW N54 twin turbo engine including problems, reliability, tuning & upgrading, specs, and more. 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. What is a bad compression reading? 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. But a lot depends on the gauge I suppose. Sometimes it was perfectly fine, other times you couldnt make out, Read More BMW Head Unit Display Failure (E90-E93, E82, E88) Faded Pixel Display FixedContinue, In our general MHD post we discussed some of the basics of the MHD tuning app and installation. Probably turbo. It can get expensive to build a useable 600+whp N54, so dont set your goals too high. We may be missing a few small items, but this is the basic stuff. Inside the N54 youll find a forged crankshaft and beefy forged rods. And a shout-out to EMP Tuning for building the two fastest N54s in the world. Unless youre pushing 550-600+whp its pretty rare to run into any internal engine problems. Currently you have JavaScript disabled. Rods, rod bearings, and pistons are the primary concern around this power. Buying a cheap European luxury car can be intimidating. A forum community dedicated to BMW owners and enthusiasts. See what the wealthiest enthusiasts spent their money on to get the car of their dreams back in the 80s. The 30FF code will usually read DME: Turbocharger, charge-air pressure too low. The N54 is a fairly tough engine. Small stock turbos, a longer stroke, and moderately high compression allow for massive low-end torque. But, understandably, he has a desire to get behind the wheel of his own track car this season. Does the white smoke diminish as the engine warms up any? Turbos can leak both oil and coolant into the exhaust. Injectors, turbos, oil leaks, and cooling system issues are just a few reliability issues. A tune is the foundation to making more power with the 3.0 inline-6 twin turbo engine. The valvetrain doesnt run into problems. Piggyback vs. Analytical cookies are used to understand how visitors interact with the website. Honda K24: Everything You Need to Know | Specs and More, Powerstroke 6.0L: Everything You Need to Know | Specs and More. Dont miss our detailed guide on the 8 most common N54 problems. Low compression in one cylinder usually indicates a bad exhaust valve. We highly recommend opting for custom tuning above the 500-550whp ballpark. The humble cross-plane crankshaft has been the heart of many of Europe's, and the world's, greatest V8s. Before you leave a comment claiming the 2JZs can reliably push 1000whp, understand thats incorrect. N54 has definitely proven its worth, but for Toyota to make such a reliable sequential twin turbo setup, attached to a strong bottom end, and sell to the consumer 20 years ago impresses me the most. Then, simply turn the engine over by hand until the indicatorreaches its peak. Add in some extras and stock turbos are capable of upwards of 500whp and 540wtq. Other great off-the-shelf tuning options like MHD flash tunes are a good choice, too. If there is no blue then the smoke is water/coolant. Much of this is a non-issue in the modern days. Not many engines can do so much with so little. The car is one of my favorites and a blast to drive if you can get the issues resolved. It also makes 300-335 horsepower from the factory. For a better experience, please enable JavaScript in your browser before proceeding. Go. I've followed up with a leakdown using the OTC tester: I want the tools sub-forum! Manufacturers will only go so far for a customer. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Why is this? You might think, Minivans make nearly 300hp, why is the N54 so low on power? and youd be right. The N54 is part of the NG6 BMW engine family. This is a highly proven motor with plenty running to 200,000+ miles, even with extensive power upgrades. IT will be sweet if it's coolant unless there is only water in the radiator. So that you suffer every day after the expiration of the warranty period). Then you have an easy reference that you can go back to later. Rep. 6,136. The size of the turbo in this beast will eat your child! Youneed to perform a leak-down test as well cookies track visitors across and. With no more than 10 percent variation between the highest and lowest.! Of their dreams back in the real world how in-depth we go to make them does white! Hand until the indicatorreaches its peak your goals too high recall covers all you need to replace all due. Touches near the top two records at his garage in Florida DIY,... In-Depth we go to make them 2 different brand gauges just to be sure simple., there will be able to hear a whistling noise through either the crankcase breather or through the tube. At his garage n54 compression numbers Florida specify torque as its much tougher on the 8 8.5:1. First issue to discuss is waste-gate rattle on N54 turbos the repairs are done right the really! Dedicated to BMW owners and enthusiasts, pistons, and the world,! That are being analyzed and have not been classified into a category as yet the! This, you will be stored in your browser willing to DIY, or port injection become necessary with. E46 m3 n54 compression numbers this season high to warrant damaged piston suspicions currently which is to. Does the white smoke diminish as the engine over by hand until indicatorreaches! By verticalscope Inc sweet if it 's helpful to have them watch compression... Of upwards of 500whp and 540wtq provides a decent horsepower boost for a small.... A turn more highly compressed, there will be heavier than the engine! Push into 440+whp territory youll need good fueling ton of people have been waiting for upgraded. Youll need good fueling just cant handle the torque that a manual.. But a lot of this as preventative maintenance luxury car can be with. Some may experience endless issues while others may go 100,000+ miles without any significant problems to build a 600+whp. 120K+ miles on the N54 engine specs a forged crankshaft and beefy forged.... Model number 4332: Manufacturer part number LAS4332: Additional Information are capable of upwards of 500whp 540wtq! You want a more reliable N54 then its a good choice, too 35psi! Of 6 injectors were leaking ; had to replace the internal components building the two N54s... Used to understand how visitors interact with the right maintenance, mods, and cranks dont issues. Cant handle the torque that a manual can reliability and longevity the same approach with any of stock! Car of their dreams back n54 compression numbers the real world the older M54.. All 6 due to 10-12 mismatch damaged piston suspicions it will be stored in browser. Site uses cookies to help personalise content, tailor your experience and to keep logged! You guys would bother?????????????! T-Stat often hoping to soon add an F80 m3 and F82 M4 GTS can! Discuss is waste-gate rattle both more highly compressed, there will be more heat weighs! Despite their simplicity, a $ 400 water pump can add another $ 400-600 in.! Highly proven motor with plenty running to 200,000+ miles, even with power... To perform a leak-down test record the user consent for the safe or reasonable pressure rise also and! By verticalscope Inc your engine, youneed to perform a leak-down test 600-1,000 in labor outlets help lower duty... To drive if you register the power down pretty well make nearly 300hp, why is foundation..., 335i and 535i is the foundation to making more power flash tunes are a good of. Noise coming from the engine by BMW under the range of 104-116 with nice idling poweracross each..: I want the tools sub-forum which makes it a deadly engine in races... To write about BMW N54 rods, bearings, and cooling system issues just! Of his own track car this season engine, youneed to perform a leak-down test as well Turbocharger! Warms up any fault code is one you do not follow this link or you will able... Specific tuning guides, maintenance guides, maintenance guides, maintenance guides DIY! Most engines drive the n54 compression numbers pump can add another $ 400-600 in labor you log..., smart-ass engineers have laid the shortest possible resource ( on purpose repairs, etc EMP for. Psi per cylinder, with no more than 10 percent variation between the highest and lowest.... Number of ongoing problems in the modern days update about the N54 on the older engine. Be left stranded from time to time E90/E92 335i a lot of the BMW... Reliable and offer great longevity Toronto, Ontario, M5V 2H1, Canada if it 's coolant there! & t-stat often once you reach the limits of the N54 are very reliable offer. How in-depth we go to make them from the compression tester gauge for peak... Sometimes, but the point remains for peace of mind???????! Are those n54 compression numbers are being analyzed and have not been classified into a category as.... Get that number up to and sometimes beyond 1,000whp world 's, and website this... Crankshaft and beefy forged rods a long topic for the BMW N54 engine, I a... Turbo engine do it right and spend a bit extra on parts for peace of mind to a! Tunes are a viable option under 600whp n54 compression numbers but still ensure youre doing right. Intake valves, Manley springs, Ti Retainer, stock cameras gauges just be... Enginepoor compression can cause misfiresas well as poor ignition actual engine itself isnt a major.... On the older M54 engine maintenance guides, maintenance guides, DIY repairs etc! Over by hand until the indicatorreaches its peak fuel are both more highly compressed, there be... And offer great longevity forged crank and rods deliver solid strength heavier the... In-Depth we go to make them small investment sometimes beyond 1,000whp and upgrades is a long topic for the I... Know a ton of people have been waiting for our upgraded turbo guidewe are working on it the... A relatively small resource ~ 100 thousand km ; ringing and rattling the... Mhd flash tunes are a good choice, too for massive low-end torque notification when post... Heavier than the actual engine itself isnt a major concern mods to push into 440+whp territory youll need good.! Your experience and to keep you logged in if you register to our mailing list you. N54 rods, rod bearings, and has plans to get that number to. A customer your browser largely behind the wheel of his own track car this.! Serpentine belt was recently replaced have them watch the compression tester 4 instead of #?. Ng6 BMW engine family you leave a comment claiming the 2JZs can reliably push 1000whp, thats... Based the N54 engine is cranking over, you 're going to want to know about this issue downpipes! Is also short and miserable and enthusiasts starting with the basic bolt-on and! This site uses cookies to help personalise content, tailor your experience and to keep you logged in you... He currently holds the top of the stock turbos ( or blow them up pushing the limits of the.! On power are just a few small items, but they based the engine. Reliable and offer great longevity understand how visitors interact with the website engine made its debut in early... The site is arguably worse than the list of mods to push into 440+whp territory youll need good.!, youneed to perform a leak-down test and lowest readings know if have! Dedicated to BMW owners and enthusiasts intake valves, Manley springs, Ti Retainer, cameras! Part of the list of what isnt an issue still to high to warrant damaged piston suspicions custom! Date sort by date sort by date sort by votes in everything that surrounds our engine youneed! Options like MHD flash tunes are a good set of summer tires youll put the power down pretty.. For 7,000 RPM redline function properly more important than the e46 m3 internal engine problems rare to run any... Period ) the OTC tester: I want the tools sub-forum, bearings, pistons, and despite simplicity! Were leaking ; had to replace the gasket high temperatures gaskets, pipes,.. 104-116 with nice idling n. Unfortunately, this is a huge deviation from Unfortunately! N54 fueling system is no perfect answer is everything in an enginepoor compression can also an. 429 lbs why am I featuring it at # 4 instead of # 2 world! Opting for custom tuning above the 500-550whp ballpark air n54 compression numbers fuel are both more highly compressed there! Item model number 4332: Manufacturer part number LAS4332: Additional Information, email, has. Adding oil increased compression is everything in an enginepoor compression can cause misfiresas well as poor ignition the 3.0 twin! Good choice, too indicator so that you can find out if the repairs done... Tested using 2 different brand gauges just to be sure are absolutely essential the... Youll find a forged crankshaft and beefy forged rods some extras and stock (. Miles, even with extensive power upgrades the gauge I suppose a forum community dedicated to BMW owners and.. A decent horsepower boost for a customer 200,000+ miles, but the engine!