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

 

anyone ?

 

Can't tell you what the difference is but I am running a decompression plate in my 200 block YB. Give Nick a ring at Advanced Automotive in Bristol, he will explain everything 01179672344

 

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.

 

chip-3door

chip i was talking about escort rst pistons where when people skim them they just skim 1mm off the top, even the low comp mahle rst pistons are like this just flat top 1mm lower, and i can see what you mean about the plate but i can get a 1mm thicker gasket so who knows how much that will lower the comp ratio 8:3.1 standard so around 7:5.1 ?

 

i think low comp mahles are forged (ie stronger as there made differently)