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3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

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Old 02-18-2007, 01:54 AM   #1 (permalink)
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help, my heads messed up

I have a 1985 325e and i was gonna put the 325i head on it, im not sure exactly wat i have to do and what all i need so any suggestions would be helpful.
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Old 02-18-2007, 02:54 AM   #2 (permalink)
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LOL! When I read the thread title, I thought this was a cry for help. Like you were contemplating suicide or hearing voices and shit. LOL!

Gotkraut is your man for that info.
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Old 02-18-2007, 12:03 PM   #3 (permalink)
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Quote:
Originally Posted by beamerboy85
I have a 1985 325e and i was gonna put the 325i head on it, im not sure exactly wat i have to do and what all i need so any suggestions would be helpful.
What you are trying to do won't work, the combustion chambers on the I head are larger to make room for the dome dished pistons (the pistons actually stick out of the block), the E engine has flat dished pistons and smaller combustion chambers. If you put an I head on an E motor you will lower the motor's compression drastically and it will not run right. This may be good combo for a turbo application but not for N/A induction. Your best bet is to get the I pistons, I head, I computer and harness, and I intake with your E block and E crank and E rods with 19lb per hr fuel injectors from a late ford 5.0 or early 4.9L V8. With this combo you'll have basically done a 2.5 I stroker motor. A rather potent combo. However, with the cost of parts and amount of work needed, it would make an M50 motor swap a lot more attractive....

Last edited by Starmavin; 02-18-2007 at 12:05 PM.
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