Michael.lebaron Posted October 21, 2009 Share Posted October 21, 2009 I have a 1999 forester with a 2.5SOHC bad bottom end and I was wondering if I could swap out a 2.5 DOHC bottom end small block? Will the engine(DOHC) bottom end line up with the clutch and trans? Link to comment Share on other sites More sharing options...
idosubaru Posted October 21, 2009 Share Posted October 21, 2009 clutch and trans are definitely not a problem. not sure about heads bolting up. Link to comment Share on other sites More sharing options...
davebugs Posted October 22, 2009 Share Posted October 22, 2009 The "first" question. Are you sure the DOHC bottom end is good enough to consider to do this amount of work on? Link to comment Share on other sites More sharing options...
2.5GL Posted October 22, 2009 Share Posted October 22, 2009 (edited) I know it will work, but I can't remember which head gasket to use. It needs to be the thicker one, which ever one that is... Otherwise it will make some knocking noise due to the piston(s) contacting the head. Edited October 22, 2009 by 2.5GL Link to comment Share on other sites More sharing options...
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