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Re: sounds good but also... (archive)
[ Follow Ups ] [ 5-series (E28) Message Board ] [ Msg. Board FAQ ]
Posted by andyman on December 10, 2001 at 04:55:00:

In Reply to: sounds good but also... posted by TJ on December 10, 2001 at 00:30:12:

I thought the eta crank would be ok if you didn't rev it too much, but if you've got a 524 engine to rob, get the crank from it...

I've thought of this one... here's my brain child...

use an e30 i head on the eta block, that way you'll get dual valve springs and a better cam. This will lower the compression ratio to about 8:1, but since you're turboing it, you don't care much because you can crank the boost up.

I'd use an exhaust manifold off of a 324td or a 524td if you can find one. I don't know if I'd use the stock turbo off of the 524, but that's a good starting place. I'm not sure of the compatibility of the rest of the turbo gear from the 524, but that shouldn't be much of a problem...

I'd run with an e30 i ecu, but it'd need a custom chip programmed to deal with the unique fuel mapping of the turbo...


I think this would be the best way to turbo an ETA, but whatever you do, change the crank, the ETA crank will probably break with any significant boost




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