idosubaru

from searches i've seen EA81 - EA71 comparisons or mention of EA82 pistons in EA81 blocks, but not lots of solid info on the other way around....using EA81 pistons in EA82 or ER27 blocks. i'm looking at aftermarket forged EA81 pistons i'd like to use in the ER27, they have valve reliefs cut into them as well. i could look into aftermarket EA82 pistons - but i'm fairly set on these EA81 pistons unless i see some really solid feedback on something else. thanks, gary gross moderator - http://www.xt6.net 1989 Subaru XT6 AWD Auto w/ High flow converter, dynomax muffler, locking center transfer clutch and rear LSD 1989 Subaru XT6 AWD Manual

can i install EA81 pistons in my ER27? if you know that they will work in the EA82, that's just as good since that has the same pistons as the ER27. is there a good link to the specific differences between EA81 and EA82 blocks - like the pistons?