I'm wondering if anyone can tell me what the measurements should be on a few different OK condition removed internals, specifically rod bolts and rod bearings.

2005 Evo VIII, internals removed at 15k miles.

They should be something like:

rod bearings (thickness at center): .0595 in
rod bolts: 2.3675 in

Anyone have OEM specs as well, and tolerances? Anything else to check for to show the engine was operating properly (i.e. no detonation and no stretched rod bolts from over-revving) other than spark plugs and pistons?

Basically I'm examining my motor to show the catastrophic failure was not user error. Thanks guys.

 

nobody? Any idea where i can get this information from?

 

Off the top of my head, the thickness of the bearings varies depending on the diameter of the journal as well the diameter of the rod opening. The service manual has all the information you're looking for.

 

Good idea.

I did find some info in the 03 manual that I have, which says when inspecting rod bolts, if the shank (i.e. length of everything minus the head) is longer than 2.71 inches, replace the bolt. The length of all of my bolts INCLUDING the head are under 2.4 inches, so it appears they are ok. Mitsubishi sure allows for a good deal of stretching though, almost .4 inches. Although, that doesnt seem right.

 

oops, I think that was for a different bolt.. It doesnt seem the service manual has the specifications of rod bolts or rod bearings..

 

Check here for 2005 info:

http://forums.ne-evos.net/phpbb2/viewtopic.php?t=248

Hope that helps....

 

Ahhh yes, I was looking for the 2005 specific manual. Thanks Kekek.