What year i heads fit an 87 ETA? - BMW Forum - BimmerWerkz.com
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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#1 (permalink) Old 06-22-2004, 10:49 AM
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What head will fit my 1987 325 2.7L ETA engine? Based on helpful posts in this forum, I'm trying to improve the performance of this engine by putting on an "i" head. All input is appreciated!
If I don't get "i" pistons, will I still see an improvement in performance?
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#2 (permalink) Old 06-22-2004, 02:14 PM
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you can use a 'i' head from any 2.5L M20 from 87-91, however you must use custom pistons or your compression will drop extremely low, i dont know if it would still be driveable or not, but it deffinately isnt a good idea to use stock pistons. you can however use 88 super eta pistons but it still wouldnt be ideal for performance as the comp would be in the mid to high 8's.

check out www.strictlyeta.net for more info
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