Sara32013 Posted May 28, 2018 Share Posted May 28, 2018 (edited) I'm working with an EJ251 out of an 02' Forester and an EJ25D I believe is out of a '96 LGT. The engine is going into the '02 Forester and I plan to use the EJ251 heads on the EJ25D block. This is the first time I've attempted to rebuild an engine, or even pulled an engine. Anyhow, I've got both engines out of the cars and the EJ251 is already torn apart, I have a few questions though. When shopping rod/main bearings, pistons rings, etc it gives me oversize and undersize options. I'm just wondering, why would I need an oversize, or undersize rod/main bearing, or piston ring? If I just order the "standard" size would I be ok? Also I'm looking for the crush gaskets that go behind the expansion plugs, any idea where I could find those? Sorry if these questions are really stupid. Thanks for any advice! Edited May 28, 2018 by Sara32013 Link to comment Share on other sites More sharing options...
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