Join Date: Feb 2006
Location: Burnham-On-Crouch, Essex
compression ratio and skimming heads. How much?
I have a 1988 164 V6 3.0 12v Sport. I wish to skim the heads to increase the compression ratio.
How much can I safely get away with skimming please? I've seen suggested 0.44mm. Is that right?
I've never, ever heard my engine pink under any circumstances even with crappy petrol, towing at high speed, high revs. So I think I can get away with increasing the ratio within reasonable limits. The SZ had the same engine with higher comp ratio, afterall.
I realise the best way to do this is to replace the pistons instead but I have a very limited budget and Hi-comp pistons are way out of my price range. Unless anyone happens to have a s/hand set they would want to sell me cheap?