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Title: grey motor crank Post by: john253a on March 12, 2012, 07:08:42 PM just wondering what the safest compression ratio is to run on a stock 132/138 grey motor crank, with out stud girdles,
hoping 9:1 or even 9.5:1 Title: Re: grey motor crank Post by: john253a on March 13, 2012, 12:53:01 AM got myself a turbo that im going to try and fit, on the stock block until im ready to strip down propley
with a staic comp of 7.2 factory if i add 4 psi ill be around 9:1 and 5psi 9.5:1 ive seen a few running high 9's but not sure on the reliability, just want a bit more up and go, nothing to wild |