hello,
i ve got a set of mahle 2wd cosworth piston which are 0.5 oversize i bought them off ebay a while ago . i ve recently been cleaning them up and measuring them. i ve found that they have been skimmed but i don t know by how much .does anyone know the piston height/length of a standard 2 wd piston so that i can compare?the length of the pistons are 64.25 mm . another thing about these pistons is that they have a 2wd compression ratio dish design but the gudgeon pin is offset by 2mm. i thought that only 4x4 pistons had the offset pin .did rs500s have a offset pin?
regards
jack

 

2wd have a larger offset than the 4wd.
tabetha

 

i always thought that 2 wd gudgeon pin was smack bang centre? also do you know the standard piston length/height ?
regards