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S38 is a bad engine to turbocharge (archive)
[ Follow Ups ] [ M5 (E28) Message Board ] [ Msg. Board FAQ ]
Posted by M5yates on April 28, 2002 at 18:32:34:

In Reply to: Anyone have engine pics of an e28 M5 turbo? posted by Ethan Turner on April 25, 2002 at 21:07:39:

The m5 engine already lives on the edge of detonation. Adding any appreciable boost is hard to do with out lowering the compression ratio. You also need a better engine management system that reads the manifold air pressure and adjusts accordingly.

These things are not done cheaply. One mistake and you have a $10,000 engine rebuild on your hands. Ask me how I know! My mechanic, working over the phone with Dinan, reconfigured my fuel regulating system. 10 minutes after I picked up the car, my head gasket was toast.

Go add boost to a 535i. The M30 engine is perfect for this.

Thanks,
Bill Yates
88 Dinan M5turbo


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