hi guys, just out of interest, is it necessary when rebuilding a YB to used pistons
with the valve cut outs, i know cut outs would be needed when runnind big cams etc
but using std cams with a new rebuilt engine should one be using pistons with cut outs???
cheers.........
pistons only normally hit the valves if the engine isnt timed up correctly, the head is too thin or you rev the bollox off it
most cossie's have had valve to piston contact - but this is normally due to neglect rather than anything else
if you;re going for big power than yes i would get them; if its standard then i wouldnt bother