allanallen 528 2 Cars Posted October 24, 2008 Hi all, my gti6 engine has je pistons fitted, Ive been told they give a CR of around 11.5:1 and obviously have pockets for valve clearance. what i want to know is, are these essentially the same as je's low comp pistons but with more material left on them to raise compression ie; can I machine these down to give a sensible CR for forced induction cheers al Share this post Link to post Share on other sites
Sandy 191 Posted October 25, 2008 UnlikelyI would think, the crown thickness is usually about the same to keep weight down. Share this post Link to post Share on other sites
allanallen 528 2 Cars Posted October 25, 2008 UnlikelyI would think, the crown thickness is usually about the same to keep weight down. thought this might be the case. cheers sandy probably best to sell these to fund some proper ones, al Share this post Link to post Share on other sites
