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Originally Posted by 20vK
Compression ratio really depends on results. I'll start at around 8.3:1 and see how things go. ..
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true, but for a 800+bph 1.8 it might be wiser to start with 7:1.
Don't be shocked, the engine WILL run fine at such compression, it will just be a tad gutless while off-boost (it depends on the ignition timing as well)
You'd need specially made pistons for sure, with thicker crowns and a repositioned top ringland perhaps.
That would be the first deterrent against detonation. We're talking several bar boost pressure here.