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m20b25
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  1. E30 (1982 - 1993)
    Hey guys, I recently rebuilt my head and replaced the fuel pump, filter, injectors, and relay. I had a cut out and the check engine light pops on and off and there would be a loud pop but i didn't think anything of it since it only happened once. now its reoccurring and i'm super confused on...
  2. E30 (1982 - 1993)
    Hi guys, I need some help. I imported a great looking BMW 316i E30 from Greece to Denmark in the winter 2017. The car is modified completely to a 325i E30 with a M20B25. We have very strict rules here in Denmark about modification of cars, and therefor, I need some documentation for this...
  3. Performance
    Hey guys, I have two unused clutches for an E30. They're both stage 3 and good to about 500 ft lbs of torque. They were mounted and removed but never used. Asking $200 + shipping for each clutch.
  4. E30 (1982 - 1993)
    I recently purchased a money pit. Its a 1990 325i, 5 speed and all seemed good on the surface. Sorry for the length of this post, I'm playing catch up for this build. And i put in a lot of detail, at least try to. The car has next to nothing for rust, a few dings and dents, a cracked dash...
  5. E30 (1982 - 1993)
    Hello, I was driving on the highway this morning and out of the blue the car started vibrating a lot and I thought I had a flat tire. After some troubleshooting it turns out it is related to the engine as this happens when stationary and in neutral. The vibration/rumble starts around 2000 RPM...
  6. E30 (1982 - 1993)
    Hey guys I have a quick question. I have a 1987 325is that I bought for a steal. The only problem is that it has a cracked head, rat poop, and just over 200k on it. I am finally getting the chance to pull the old motor/trans this afternoon and I am looking for a new M20 for it. Junkyard...
  7. E34 (1989 - 1995)
    Hey guys. I own a 1990 bmw 525I and I am thinking of getting a performance header for my M20 and I found one that I like but it's for an E30 M20 and mine is an E34. Does anyone know if the exhaust manifold (header) is the same in both?
  8. E30 (1982 - 1993)
    I have 213k miles on my 90' 325I and my compression is very low in cylinders 6 and 5 it's 120psi. And it increases as I go to the front of the engine. What is the reasoning to this? About 140 or more psi in cylinders 3 2 and 1. I also have a lot of carbon build up on the spark plugs in cylinder...
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