Anyone know the difference? I'm wondering if the STi crank has a longer stroke. Also, what machining does it take to use the STi crank in a phase 1 block. I could have an EJ25D crank for practically nothing. Not that I'd use it anytime soon, but my borked 22T block looks funny without a crank sitting in it. When I get out of school, it'll get the royal treatment with oversized studs and some nasty Darton sleeves. Can you say 2.6+L? Thats gonna take some capital though.
I'm mainly wondering about the stroke. I know someone here that probably knows(ahem, Bikerboy), but he's probably out for the night.
IIRC there's an issue with main bearing size and thrust washer/bearing location between phases. although I suppose you might be able to fix all that with some machine work. according to the FSMs I have here in my laptop. '96 Outback 25D and '04 STi 257 both have a 79mm stroke.
Well, besides the STi crank being forged...I'd guess that the bearing (Main and Rod) journals are the same size. You'd have to measure them though.
All EJ series cranks are forged. They have to be to be as compact as they are. What material they forged them out of may vary, but only a Subaru engineer could tell you, or if I bought a conductivity tester worth 10's of $k's. One of my old professors at UMD had one. It was pretty baddass.
