Bmw m30 engine

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3,3. this engine with its "885" cylinder head and larger 84mm bore is going to be a better starting point cost/complexity wise. Using the same machining approach as  This is BMW parts item 12111725070 described as Distributor Cap for bolt-on style ignition rotor Distributor Cap for M20, M30, M70 engines with Bolt-On Rotor. The M30 engine has the same basic block from 1972 to 1993. 12 products. In spite of the fact that M30 produced along with M20 (straight-6), M30 has more common with younger 4-cylinder M10. Aside from the increased bulk, the M30 is a relatively simple engine to work on, and powered performance E30 models such as the Alpina. The reasoning for reducing, or sometimes even removing ZDDP, is that by removing it expensive modern catalytic converters, and 02 sensors, would last a bit longer. 5L 6cyl m30. Made in Germany M30 Valve Adjustment Adjusting the valves on your m30 engine is a mandatory part of proper maintenance. Over its 28-year lifespan, the M30 was used in many BMW models. Repairs arent cheap, not really a recommended swap unless you know it is what you want. They are used and untested so they would suit a rebuild. 5 liter inline 6 can bolt into your e30! The m30 is a tried and true setup in an e30. Engine 3. The M30 engine was BMW's Big Six engine. Shop with confidence. The M60 is the internal code for the V8 engine manufactured by BMW from April 1992 to 1995. If you’ve ever dealt with an S54 you know that it’s an amazing motor…With an unfortunate Achilles Heel. The BMW M20 is a SOHC straight-six petrol engine which was produced from 1977 to 1993. This forum is dedicated to technical write-ups contributed by Bigcoupe. 0 engine mount brackets (the b35 doesn't). Over its 28-year lifespan, the M30 was used in many BMW models. Bmw v6 engine diagram 2003 wiring diagrams show bmw 2001 engine diagram wiring diagram bmw v6 engine diagram 2003. 0 mm 324 HP @ 7000 rpm cast-iron block, aluminium alloy "crossflow" head forged steel crankshaft with 7 main bearings chain-driven single overhead cam (SOHC) with rocker arm valve actuation, 30-degree cam to the right for a lower profile, 2 valves/cyl - 12 valves total The preferred block to use is the b34 (combined with the b35 head). BMW's ultimate naturally aspirated straight-six in a tiny 3 Series is a recipe for big fun. BMW E30 PERFORMANCE MOTOR SWAP PARTS- LS1, M20, M50, M60, S50, SWAPS. Like the larger capacity M30 engine from which it is derived, the M20 has a SOHC and 2 valves per cylinder. M50 oil pump sprocket nut is under torqued, it pops out and causes engine to loose oil pressure while driving. Turbo Garrett GT35. Worn or torn engine mounts create noise, harshness, and vibration in the drivetrain that transfers annoyingly to the cabin. On the M30 engines the oil filter is located inside an oil filter housing (a cylindrical container). Those of you who know m30's, you know they are just getting broken in at 90k. Find great deals on eBay for bmw m30 engine and bmw m20 engine. Unfollow bmw m30 engine to stop getting updates on your eBay Feed. NEW in the box. The BMW M30 "big six" isn't so much an engine as an experience. Now I've been recommended a thinner oil for my V8 car, I'll go for 5W30 for that engine. 1900 different remanufactured engines with a fill of 90%. BMW Engine Pistons with Connecting Rods M30 B35 E34 535i E32. My friend bought some month ago an M30B37 ( AC Schnitzer block ) i has somewhere around 260-70hp for 700$ An Alpina B9, B10,B11 engine with under 200tkm on the clock costs about 2000$. The engine is a 2. Be patient. The BMW M30 … is a straight-6 SOHC piston engine which was used over a 28 year lifespan over many BMW models. M30 Engine. Before BMW M60 series (V8) in 1992 its place occupied by large inline 6-cylinder M30 engine. Remanufactured engine pricing and I. The first cars to use the M20 were the E12 5 Series and the E21 3 Series. We're 100% Independent! We are 100% Independent of BMW AG any use of a BMW Trademark is to ensure customers can identify their make and model of vehicle. The M30 , was the first “big 6” and was produced from 1968 – 1994 for E12, E28, E34, E24, E23 and E32 cars. Our commitment to providing the best parts at the best prices is topped only by our dedication to providing the very best service to our clients. This represents the vacuum, crankcase ventilation and intake hose routing for the M30 engines in the 80s models of the 5, 6 and 7 series BMWs. Before BMW M60 series ( V8) in 1992 its place occupied by large inline 6-cylinder M30 engine. 5L straight six cylinder motors had the longest production run of any BMW engine, dating back to the 1968 E3 and E9 cars. M30 BMW Crate Engine Classic NOS. org so we can give you the particulars. Virtually any big six will bolt right into the E12 engine bay. It was originally developed in the late 1960s as an extended 2. The M30 engine had been produced for 20 years when the E34 arrived in 1988. You Need to Drive an E30 BMW With an E46 M3 Engine Swap. You can read more about it just by clicking HERE. Help Support Bigcoupe. DragonAuto. It’s a superb engine but, beware if the cam isn’t silent. The first models to use the M30 engine were the BMW 2500 and 2800 sedans. Turbo kits for BMW M30 engines are available plenty and in different stages  BMW E30 - All models (For M30 engine conversion), Manifold 100% Stainless steel (Left Hand Drive only), Front exhaust, Rear exhaust OO76, Rear exhaust  Dec 17, 2017 Board index BMW E24 6 Series Engine - Mechanical - Electrical. Built for 320 plus hp but yet to do rolling road. com · Facebook HP, $9,995, $800. The M30 engine's bottom end is virtually 'bulletproof' and a true workhorse. M30 in an E24 635CSi. The first model to use the 2494 cc version of the M30 was the E3 2500. 0,3. These are amongst the most collectable cars in the world. We are currently re-introducing this kit to the market and it will be available soon. 0cs, Bavaria, 5, 6, & 7 Series ≥’93. You can expect a 200+ HP increase from our Stage 2 kit. The oil filter is in a form of a insert cartridge, so you only change the filter itself (not the housing which is common on more modern engines). It was the older, bigger brother to the Baby Six M20 engine fitted to 320i and 325i E30 models, and offers much bigger displacement and superior torque. BMW's M30 "Big Six" went into plenty of 5-, 6-, and 7-series to, say, the more fragile Honda B and D engines). The BMW M30 is an inline-6 cylinder engine built by BMW and was used in many different models since 1968. The engineering tolerances of the components within the engine are not designed to cope with such light oils, nor is the oil pump – so keep it sensible – a good quality 15/40w oil is perfect for most applications of this engine. The 525i used the BMW M20 engine while the 535i used the larger M30. this was separated in different posts and stuff over there, so it's a little discontinuous. It was released in 1977 in the E12 520/6 and E21 320/6 and began to be phased out following the introduction of the M50 engine in 1990. The engine is pretty much the only thing that has not been rebuilt so I want to make sure it gets done right. Fits and looks like factory. Hello All, I just bough a 1985 635csi and plan on making it my next project. Owner Chris. The two advantages I see for M50 over M30 is the light weight and not requiring valve adjustment. Search: Search This Section. BMW M30 Turbocharger System Please excuse our construction. Regular price $300. 11 53 1 466 174/75, Thermostat. , took the time to create the diagram presented here. 4 liters with a 100 mm bore spacing. The last use of the block was the 1994 E32 730i. With a production run of 22 years, it is BMW's longest produced engine and was used in many car models. First of all, find a good shop to work on your cylinder head and buy a Bentley manual. Hi Guys. Draining Oil Filter Housing. Features 1 5/8" primary tubes and 2" collectors so it will work well on performance-modified M30 engines. The Garagistic namesake originates from the innate need to win even when in a disadvantageous position. We put 40k miles on our prototype cars testing Stage 1 and Stage 2. 0 L (122 cu in BMW M30B35 engine reliability, problems and repair. Head RHD developed, extensive port modifications, custom SS valves 48/37 BMW M30, straight 6 cyl, 4 stroke, petrol engine 3003cc, 89. Technically not a rebuild, but close enough for me! I take apart the engine in my car (a BMW M30) and examine it's internals and repair a broken head gasket. Pistons Low comp forged Ross. The kit transforms the m30. One of our customers, Gary K. Tags: #bmw m54 engine diagram #bmw m42 engine diagram #bmw n52 engine diagram #bmw m20 engine diagram #bmw n54 engine diagram #bmw m10 engine diagram #bmw m52tu engine diagram #bmw m44 engine diagram #bmw m62 engine diagram #bmw n62 engine diagram #bmw m50 engine diagram Does anyone have the specifications for the Alpina B10 M30 engine? My car is an 88 B11 3. The first M30 motors appeared nearly 50 years ago and since then were constantly Find great deals on eBay for bmw m30 engine. Putting this head on any earlier M30 will result in a lower than original compression ratio. It was originally developed in the late 1960s as . 1st run. It was never stamped, as a replacement 'crate' engines often weren't. Chronology. 855 269 8863 Top End Performance has been your source for the best prices on brand name, top quality car parts since 1994. BMW's 3. BMW 3625cc stroker M30 rece engine. No longer needed as I have taken the doner engine (turbo m30) out and put it in my e24 6 series. Broken motor mounts also pose a threat to safety. In truth, the M30 is the toughest and most forgiving engine we have ever had the pleasure of working on. It was sold alongside the M30 straight-six and the mighty M70 5-Litre V12 in the E32. This article will explain the naming convention of BMW engines. D. Tags BMW E12 E3 E9 CSL 2800CS 3. 5,2. for cars, inboard boats, trucks, RV's or motor home at links above. If you are hesitating about the cost of these frequent oil changes (especially with larger engines consuming large quantities of oil each time) I would like to recommend to use a good but cheap oil (with correct viscosity and proper quality ratings of course) and change frequently instead Intake. This page has been accessed 121,819 times. This article will explain the naming convention of BMW engines The M30 , was the first “big 6” and was produced from 1968 Engine. 0L 2800 1979 BMW 323i: A large engine - M30 can surely fit in the e21 chassis. so time to strip it to a long-block to make sure everything else is ship shape, and some cosmetic touches…. BMW M62 Engine X5 Details BMW Engines All About The M30 BMW uses 4 different letters in their engine identification codes. $1,049. BMW only and always set the compression ratio in the M30 with piston shape. jpg 2,592 × 1,944; 493 KB. com members. 6 Cylinder Engine Kits – M30 3. 5 Engine number is B112MA1662793 One of my rocker arms broke on the weekend whilst I was doing timed laps at Phillip Island race circuit. Unfollow bmw m30 engine to stop getting updates on your eBay feed. BMW's M30 straight six cylinder engines had the longest production run of any BMW engine, dating back to the 1968 E3 sedans and E9 coupes. Krinkle finish is baked on for eveness and durability. Our stock rebuilds are assembled to BMW specifications by our experienced and dedicated technicians rather than off a mass production assembly line. Welcome to Bavarian Engine Exchange - where precision remanufactured, upgraded BMW engines is our only business. Believed to have been purchase in the late 1970s, and then not used. Perhaps you own an E12 5-series car (528i, 530i) or E28 (533i) with a tired engine. comp. Year or lack of abuse is no guarantee, they all must be carefully inspected before use. 25 x 80. 5/88. The BMW M10 is an SOHC four-cylinder petrol engine which was produced from 1962-1988. 3 management. Displacement ranged from 2. An advantage is that it is a light engine and thus will not make the front end as front heavy. Regular price $100. Click the logos above to go to the pages for these products. The kit maintains the stock Motronic ECU and adds a turbo chip, larger injectors and a FMU for tuning. Will need to do a lot of fine tuning to stop the extractors cooking the engine bay. . Top End Performance has been your source for the best prices on brand name, top quality car parts since 1994. 5 liter inline 6 that is found in the 325i. BMW M30 engine BMW M30 engine – the main six-cylinder unit of the first generation. com. of boost. My friend did this in his e21. 91. 1 Thermostat Unit. The following 21 files are in this category, out of 21 total. The mounting bosses on the exhaust side allow straight bolt on of the 3. So then I decided to read about BMW M30 oil too and perhaps go for something else. The BMW M20 is a straight-six SOHC piston engine produced from 1977-1993. Owner Andrew. Symptoms: • Oil in the coolant. On the M30B35 engine, the pistons create a higher compression ratio even with the larger combustion chamber of the head. bore/stroke 93. Alpina B7 Turbo engine. These are used Original BMW parts. 00. 95 BMW M30 Turbo, Clasic 635. 3 liter 4 cylinder engine that produces more power then the 2. This procedure work for all Bmw M30 engine: 535i, 735i, 635i. JE Pistons, ARP Hardware, Cometic Gaskets, Supertech Valves, Etc. the only thing that slightly worrys me about this engine is its rarity. With a production run of 22 years, it is BMW's longest produced  BMW M30B35 engine reliability, problems and repair. Ward’s have rated the M30 as one of the “Top Engines of the 20th Century”. With only 90k miles on my "new" M30 – there was no way I was going to rebuild it. BMW M30B30 engine problems and malfunctions. It became the basis for the popular sports engine S38. firstfives. It BMW's first four-cylinder engine since the BMW 309 ended production in 1936 and was introduced in the New Class sedans. The blunt fact is a couple years later BMW released the E30 325i which ran the 2. Bmw m30 wiring harness wiring diagram show engine wiring harness bmw 5' e34 535i m30 usa bmw m30 wiring harness. BMW Heaven Specification Database, complete database with BMW specifications One of the key stones to reach a long lifetime of your engine is frequent and regular engine oil change. I want to swap my engine with a newer engine of a 525i 1994 (M50 24V engine). Engine oil cooling bmw 5' e34 535i m30 europe engine oil cooling bmw 535i e34 sedan europe m30. The BMW M30 is a SOHC straight-six petrol engine which was produced from 1968 to 1992. M30 – Single cam, 2 valves per cylinder, chain driven camshaft, produced through 1993 (US) M88, S38 – Twin Cam, 2 valves per cylinder, produced for M5 & M6 through 93 (US) M50, M52, M54, S50, S52, S54 – Twin cam, 4 valve per cylinder, produced 1991 through mid-2000s (US) "Here is my e30 with an E34 3. Please check back often for updates! Here's an old Cartech advertisement to give you an idea of what is coming: Turbo Systems include: This remanufactured engine site has engine swaps, performance engine upgrades and general information at links below. Although not the first  It's not often that you run across a BMW touring, and you certainly won't find any as clean as this one. Hit Thumbnails to Open Galleries of Bmw M30 Engine Diagram Below. Available in black, red or blue. I have taken the engine out of the 6 series and put it in the e30 3 series. Fitment: Intended for left-hand-drive cars, will not fit right-hand-drive cars. The cars were a blend of BMW tradition and modern technology. I have a BMW E34 1989 530i with an M30 Engine and an Automatic transmission. The main disadvantages, problems and malfunctions of 3-liter M30 don’t differ from M30B35. 8:1. Please see the link for a complete list of all parts. My headgasket failed. Tags: #bmw m54 engine diagram #bmw m42 engine diagram #bmw n52 engine diagram #bmw m20 engine diagram #bmw n54 engine diagram #bmw m10 engine diagram #bmw m52tu engine diagram #bmw m44 engine diagram #bmw m62 engine diagram #bmw n62 engine diagram #bmw m50 engine diagram 786 results for bmw m30 engine Save bmw m30 engine to get e-mail alerts and updates on your eBay Feed. Works are a South Wales Independent BMW, Mini & Performance Car Specialist. M30 Rocker Arm Lock Set. M30 Valve Adjustment Adjusting the valves on your m30 engine is a mandatory part of proper maintenance. It is an important compnonent of proper tune, maintains the health of your camshaft and valve train components, and is an excellent time to inspect other significant engine components. All engine performance begins with engine breathing. Intake Custom Aluminium Our proven design, this header fits E9, E12, E24, E28, and E34 chassis cars with the M30 'big 6' engine. Korman Stock Rebuild. Albero Guirola BMW M30 3. For example, the longest-lived MM engine we know of on record, is an M30 Turbo Engine that reached 485,000 + miles, using a CarTech Turbo System running 9-12 lbs. BMW’s traditional FR layout and straight-6 were used, providing the smooth engine and optimal weight distribution BMW customers had come to expect. 635CSi M30 rebuild (pic heavy) -- updated 8/26/13: running! by _marshall » Aug 07, 2012 4:01 PM Just mirroring my thread from bimmerforums over to here. The BMW M30 is a SOHC straight-six petrol engine which was produced from 1968 to 1992. Dec 1, 2018 Easily among the most ubiquitous BMW engines ever produced, the M30 has good reason for hanging around so long. M30 Race Engines, Call 573-765-1269 M30 Engine Spec Chart. M30 Valve Cover P/N LAB11126035 The E34 MAF (at least in the M30 engine) is quite restrictive. The "big six" BMW M30 is an inline-6 cylinder engine built by BMW and used in many of its cars, such as the BMW 535i. Top-End Performance is the Premier M10, M20, M30 and S14 Engine Builder and Internal engine parts supplier. It was introduced eight years after the larger BMW M30 straight-six engine, which remained in production alongside the M20. 3 Engine pieces per Samples. High Performance BMW L6 M30 M30B35 Big 6 Engine H-Beam Connecting Rods & Conrods. There are no products matching the selection. BMW single-cam M10, M20, and M30 engines need properly formulated oils. By comparison, the factory 745 engine running between 7 & 8 lbs. 10W40 sound like a good choice for my car and driving habits. Power your e30 with the legendary m30 b35 engine! These motor mounts allow you to put the legendary m30 b35 engine into the great platform of the e30. I've been running synthetic 5W40 by different wellknown brands, same as other car's I own. I'm at a loss in terms of what power plant I should swap for the current M30. M30 Heavy Duty Single Valve Spring Set. If the low coolant light comes on, even after topping up the coolant, it's leaking somewhere. 5L M20B25 engine. Its easy. jpg 2,592 × 1,944; 493  Only difference is the engine, engine electronics and drive line. 95 You can make such engine A LOT cheaper than the TCD stage I M30 Turbo. Work on the engine when cold, do not start it in the morning. The initial M20 model had a displacement of 2. Read more about this Shulz BMW touring. BMW M30B30 engine tuning BMW M30 and M102 Six Cylinder Engines. This page was last modified on 9 December 2010, at 03:24. Rods S38 BMW 144mm. The first model to use the 2494 cc version of the M30 was the E3  Since you've come to our website, you're most likely a “hard core” BMW enthusiast in a long term relationship with your bimmer, looking to increase it's  573-765-1269 hiperformancebmw@metricmechanic. The wrist pins move freely with no excessive play. Can Ship Australia wide, let me know post code for accurate shipping cost. 3700 Rally Engine Kit - 285 HP Parts are cleaned and glass peened for superior paint bond. May 26, 2018 Media in category "BMW M30 engine". 5 liter version of the robust inline four cylinder BMW M10 first used in the 'Neue Klasse' BMW 1500, with which it shares a number of design features, including a 30-degree cant to the right for a lower profile, a crossflow 525i 89-91 M20 Engine. Engine Components / Performance Heads / BMW Cylinder Heads, 6 Cylinder / M30 VAC - M30 Stage 1 Performance Cylinder Head. When you get ready to buy your engine, post a message on www. One flick of throttle actually takes tacho needle After two days at the Mosport track, I discovered some oil in the coolant. Engine 3625cc M30 Bmw inline 6cyl 2 valve. It's a 400k motor EASY…. 5 . Jun 1, 2017 BMW M30 Straight 6 engine From 1968 to 1994 specs and history. boost usually goes 150,000 miles. if things go wrong it may be difficult to replace items? whereas m30b35 is a very common engine that can be had for pennys. Car BMW 635i. Here is an awesome 323i with the m30 engine If you are asking me what would I do. Raised ribs and BMW logos are polished to a mirror finish. Can be supplied with your new engine or shipped on an exchange basis. 8,3. In 1979, BMW Motorsport stunned the market with its M1 road-going racer. Is this feasible? If yes, what things do I have to take into consideration? M50 engine spark plug hole is run vertical, when valve gasket fails, it drips oil into spark plug hole, causing your plugs to misfire. Bmw 635csi airride e24 tuning jaws2 uk airride m30 engine. Another way to tell is by opening up the engine's oil cap and inspecting the oil. The BMW M30 is a straight-6 SOHC piston engine which was produced from 1968 to 1994. Newer oils often lack enough of the ZDDP (Zinc dialkyldithiophosphate) our older engines need. Very similar engine to the E30 chassis Alpina C1, which in my opinion was a fantastic car to drive. Sadly, Cash For Clunkers no doubt sent many thousands of M20s to BMW Engine Heaven. The BMW M30 model had many modifications, including for sports cars of the M-Sport series. The car is a 1991 BMW 535i (E34) and The BMW M30 is a straight-6 SOHC piston engine which was produced from 1968 to 1994. 5 litre m30 engine. BMW Heaven Specification Database, complete database with BMW specifications 2,509 results for bmw m30 engine Save bmw m30 engine to get e-mail alerts and updates on your eBay Feed. m20 e30 bmw engine Thermostat. One end takes the air from the air box, the other is connected the the throttle body. Regularly inspect and replace any engine mount that show signs of cracking, looseness, or other damage. E30 Motor-swaps are the cornerstone in which Garagistic was build and stands for. That means the legendary m30 3. BMW refined it here with a lighter block, revised head with new ports and valves, revised manifolds and a new Motronic 1. We stock a massive inventory of BMW engines for all BMW models - including M10, M20, M30, M42, M44, M50, M52, M54, M60, M70, S70, M73, and M62. In spite of  NEW UPDATED SITE! BMW M30 and M102 turbo 12 valve six cylinder engine design notes, list of common problems, photos and all known versions and sizes. im new to bmw's so any info or help is much appriceated also looking for manual m30 535 gearbox and non dual mass flywheel cheers nick History and development M60 BMW introduced the M60 engine in 1992, fitted to the E32 730i and 740i. That's why we have a large inventory of stock and performance intake manifolds and related components, including MAF sensors, intake hoses, cold air systems, and filters for both normally aspirated and forced induction engines. It largely replaced the BMW M30 inline six. Some, particularly the '89-'93 blocks, require adaptation. The b34 block has a bit more meat at the top end, so is less likely to crack around the head bolt holes (like many of the b35's do). Portfolio bmw m30 35l turbo street engine tag engineering this is anther build in progress of a turbo m30 street engine for andrews classic red 635. Build sheet . The Miller "Big Boy" Intake Manifold for the M30B35 engine improves HP and performance by providing over double the volume of the intake manifold. Korman engines are assembled with meticulous craftsmanship, precise machining, and detailed blueprinting. I have the full wiring harness along with the computers of both engines. Head Std valves and cam, mild porting. Driving one with a manual gearbox you feel that the engine IS the car and that the body panels are just along for the ride. The M1 uses a M30-based engine displacing 3453cc – but the big difference is the fitment of a DOHC, four-valve-per-cylinder head with tuned-length extractors and individual throttle bodies. 5 to 3. M30 B34 Engine Rebuild BMW head gasket Continuously working to develop new products for the BMW community, we are excited to offer this M30 engine BBTB. Designed and made right here in Southern California. Bmw M30Bmw  Items 1 - 25 of 41 6 Cylinder JE Custom Forged Piston Set - M30 ALL 2. Instead of it began to produce BMW 730i E38 with new 3 liter M60B30. The stock Air Flow Meter (AFM) is the large metal box on top of the engine valve cover. The set of characteristics of this engine is classic: an ignition distributor and one camshaft. Valve adjustment Bmw E34/E32 (M20 - M30) is pretty simple but takes some time . Miller AFM to MAF Conversion Kit with Plug-in Chip (BMW M30 Engine) Our good friends over at speed acamedy are currently refreshing an S54 motor for their E46 M3 project, and needed to replace their rod bearings. Privacy policy; About Bavarian Technic; Disclaimers M50 engine spark plug hole is run vertical, when valve gasket fails, it drips oil into spark plug hole, causing your plugs to misfire. If you are looking to get even more performance out of your M30 engine, call today and order a "Big Boy" M30 manifold today. I have seen the E36v8 conversions and those look pretty cool but has anyone seen those ford V8s put into a E24? There are several signs that a BMW has a blown head gasket, such as if the temperature gauge shows the car is routinely running hot. 12. Media in category "BMW M30 engine" The following 21 files are in this category, out of 21 total. Together with the BMW 730i E32 production of M30B30 stopped in 1994. M30 Heavy Duty Rocker Arm Set. 0mm x  BMW M30 and S38 Engine Parts and packages. A pair of Zenith Carburettors and manifolds to suit BMW E12 M30 engine. Pete aka - Redmist can give you more details, however I have heard that the 333i and the m30 conversion makes the car "nose" heavy. Though we are well known as the go-to shop for your Classic BMW engine rebuild, as of 2018 we are much more than that! We are pleased to announce that BimmerHeads is now a full service automotive facility! Overview: BMW M30 cylinder heads are at the same time the best and worst part of the engine, giving good power output even in the difficult smog years of the 70's and early 80's, but also having an alarming propensity to crack, but some more than others. bmw m30 engine

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