I think Chris and I are getting into a battle to see who can destroy the most rotary parts the fastest.

I mixed up some JB-Weld and aluminum powder to fill in the upper runner on my side housings.  I'm using the 6-port, which usually caries an insert in the upper runner.  The insert ends with a flat wall, so the SOP is to fill it in with some epoxy to form a smooth curve into the chamber.

Knuckle-head that I am, I just filled in the end of the runner, not the insert.  I didn't notice until I was checking the profile of the rear side housing to make sure that it matched the front.  That was AFTER the JBWeld had set, of course.

The question now is "Will the slightly larger diameter for those two inches make a noticable difference in the engines performance?"  If the answer is what I think it is, I have the option of using a front housing that  has a little more  wear, or dig out the JBWeld and get an insert. (Does anyone have an extra lying around?

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