Cracking Evo engine cases?
Cracking Evo engine cases?
My 1990 FXRP recently broke 100,000 miles. The right-side engine case has also broken. 
There's a crack running from the right rear engine mounting bolt downward to wherever. Leaks like the Exxon Valdez once the engine warms up.
I recall this being a pretty common problem in the 90's with engines that had performance work in them. The guys I work with say they've never heard of it. Anybody out there had a similar problem, or know somebody who did?
There's a crack running from the right rear engine mounting bolt downward to wherever. Leaks like the Exxon Valdez once the engine warms up.I recall this being a pretty common problem in the 90's with engines that had performance work in them. The guys I work with say they've never heard of it. Anybody out there had a similar problem, or know somebody who did?
Seasoned HDF Member
Joined: Aug 2007
Posts: 8,198
Likes: 3,087
From: NW AR
There's a thread or two here in the Evo forum with pics of that happening. Do a google site: search on this forum. I think your year was cast with an area that was a little thinner than the previous and later years, but I don't recall exactly which years were more susceptible to the problem. Still, a hundred thousand miles is pretty good. You could send the case to HD and get a new one with the same numbers, or do the HD engine rebuild thing or get what you have TIG'ed up.
Seasoned HDF Member
Joined: Nov 2009
Posts: 15,705
Likes: 22,718
From: Farmington ,MS
Wow it won't let me link to another page...maybe you can guess what is "stared" out.
http://www.****************/forums/e...what-look.html
Last edited by Tom84FXST; Oct 6, 2011 at 04:54 PM.
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