Quote:
Originally Posted by VSGTS14
for all we know, the FB20 motor currently in japan could be the basis of the FA20, minus the turbo (with different compression). so it could hold up quite well for a while. i think it depends on how much it's going to be abused. i have faith in this motor right now, seeing what everybody is doing. i'm hoping subaru got their heads right and got rid of whatever was wrong with 07 and up sti's pistons/rings/tune.
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The STI pistons just have small and weak ring lands. For the FA20 they look to be a lot thicker. Much thicker than I was expecting from what I've seen of Crawford's findings. Apparently the ring lands were made thin for better emissions on the STI, but the DI on the FA20 helps enough so they can run much beefier pistons... or so it looks to be the case. The pistons look decently stout for a reliable 400whp.