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Hi Stan: I did some checking and I do have a 5/16--18 helicoil set. If you decide you need this rather than an oversize stud I'll loan you the kit. The only difficult thing about a helicoil is that you have to drill the hole true or the exhaust might not fit. They make a jig for this for some of the larger Continental engines to insure that the stud is centered and straight. Cheers: Paul NC2273H ========================================================================== ==== To leave this forum go to: http://ercoupers.com/lists.htm Search the archives on http://escribe.com/aviation/coupers-tech/
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