My power goals are 300-400 WHP, what's the best m20 model & internals to use?
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I would start with whatever m20b25 you have available. Change the oil, timing belt / water pump, and spark plugs. Then get the cheapest ebay turbo kit you can find. Get a MegaSquirt 2. Run it until it blows up (~2 weeks)sigpic
1987 - 325i Convertible Delphin Auto [SOLD], 325i Convertible Delphin Manual [SOLD]
1989 - 325i Convertible Bronzit m30b35 swapped [SCRAPPED], 325i Sedan Alpine Auto[DD]
1991 - 325i Coupe Laguna Manual [Project], 535i Sedan Alpine [SCRAPPED] -
Simon
Current Cars:
-1999 996.1 911 4/98 3.8L 6-Speed, 21st Century Beetle
Make R3V Great Again -2020Comment
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This would be a good place to start your research: https://www.r3vlimited.com/board/for...k-street-build2004 525i Manual - 1985 325E Coupe ManualComment
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There is no shortcuts to happiness. There are two paths to go
1) learn it hard way and study everything from engine hardware and tuning. There are several books that help. Internet is full of scattered pieces of information, but also misleading stuff that may lead to wrong decisions.
2) Let professional do the build
I'd use std M20B25, but properly sized turbo, +500cc injectors, intercooler, clutch, standalone engine management, tune it and drive.
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Should we ask if the car has good bushings and maintenance done first?Comment
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