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Ron Man re: 2.5L conversion (archive)

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Posted by rggM3 on August 09, 2000 at 15:16:13:

In Reply to: Re: 2.5L conversion posted by Ron Man on August 05, 2000 at 16:38:19:

Any stories out there about 2.5 liter conversions. I'm starting this project (88 e30M3) and am curious too hear experiences and recomendations. Turner seems to have quite a selection of kits....Any others?

It depends on what you're after... if you want to refresh your motor and get a few more ponies,
a 2.5L conversion is a good way to go. If you're looking to reproduce an exact copy of an EVO III
motor, it can be done, but the cost is considerably more. THe 2.5L conversion is a good reliable upgrade, but the purists will poo-poo it.
That's OK, you can leave them in your dust!

Ron Man
Built a few 2.5's....

Ron Man......I am going the freshen up route and looking more HP and torque. I currently have EVO air box and exhaust cam gear.

My plan is to go with pistons, crank, EVO intake cam, valve springs, new chip, ceramic coated header.

Do you have any feeling for what compression pistons I should run? I'm leaning towards not going the "kit route" because I have access to the parts I need thru BMW racing friends.

Any other thoughts? Big bore throttle bodies? I still want this thing to be streetable, it's my daily driver.

And please, don't tell the purists on me............





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