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Originally Posted by Sik em evo4
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Thanks guys- been to all of them!
The problem is mostly the conflicting info etc which is why I thought I'd start a thread here that others could poor knowledge into...
Stace, I get that the RA model was basically stripped of all gear so that Rally nutters could go to town (or would throw most of that gear out anyway), but what about engine specs? Most info I've read suggests that aside from cams/ forge pistons etc these babies are still rated pretty highly. Which returns me to one of my original questions... what compression ratios are they, and are they essentially v3/v4 heads "in disguise"?? (bucket/ shim setup etc)