Originally Posted by Cosworth Rallyesport
Originally Posted by Toe Knee
138.68mm althou obviously can be compensated for by running a thicker head gasket or skimming the pistons
where did you get that gem from then?
ive used them down to 137.7 with no problems.
Its what stu and other engine builders have posted up in the past to be the miminum 'reccomended' thickness as i asked and other ppl have asked in the past, obviously people have run less than that and do run less with no problems not saying its gospel and ur engine will blow up if its less than that am i
but obviously when its gets that low its getting close to the valve seats as well and like i say if u run low comp or adjust the piston height etc it can compensate