Originally Posted by mitchrst
can someone tell me please whats wrong with using a decomp plate ? whats the diffrence in like skimming 1mm off your pistons or using a 1mm plate they are both going to effect the squish effect 1mm
Indeed, but most people who lower their CR by machining the pistons have the sense not to skim them and to just take the metal out the centre on a lathe where it doesnt effect squish.
Main problem with a decompression plate is its another potential point of failure and unlike a gasket doesnt have a properly designed fire ring round the bores.
Thickker gasket would be a more sturdy option than a decomp plate as it will seal better.