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.
Well the 318 head sure as heck wouldn't work.
It's got two fewer cylinders.
But yes, the 2.5 i-spec head can be switched out to the Eta engine, along with some other pieces to combine the low-end of the 2.7 and the revability and horsepower of the 2.5. If you stroked it to 2.8 liters, you'd have a real monster.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.