GreedoGC8

Hi all, building myself a fresh engine from my dead og engines 95/6 cylinderheads, that i spent some money on skimming and replacing the valvestem oil seals on before i found the shortblock was kaput, and a '93 wrx ra shortblock i bought as a replacement. I cant see any proplems, but i thought id ask if there are any differences i cant see? Also, i found the 93 shortblock has some nice looking forged pistons with a square dish milled into them and the code 0240639129d050 stamped into the crown. I cant find anything on google to say if theyre oem sti jobs or not, anyone know how to find out?

merlin24

iTrader: (1)

The pistons are aftermarket forged pistons made by Wossner and are 92.50mm in size.
Fitted a few sets of these and are a good strong piston.


Mick