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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Engine machining and material question
I currently have a Kohler twin cylinder air cooled engine torn down on the bench. It's not well supported by the factory, overpriced parts ect. I'd like to put valve seat inserts in it. It's a cast iron jug.. Thinking bore the hole using a mill and then turn the insert to fit. Turn insert .003 under size, press fit. Any thoughts on expedient material for insert, this is non critical lawn & garden application. Anything else I'm missing here? Also the jugs have worn a taper at the upper end, normal repair is bore oversize, use new piston. No way am I paying $116 each for new pistons on this beast. Old pistons are serviceable, looks like a dry sleeve would bring it back to standard. The lower part of the bore is not excessivly worn. Federal Mogul has a 9" sleeve that would do the trick. Do I bore .003 over the sleeve size,? Can just the tapered part be sleeved and rebored/honed to spec? Any words of wisdom appreciated. DE ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
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