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#1
January 28th 06, 03:13 AM
posted to rec.aviation.homebuilt
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Corvair conversion engines
"Peter Dohm" wrote in message
. .. However, my real problem with the valve assertion is that I really don't know anyone who managed to run one of these little air cooled engines long enough and hard enough to burn a valve. The 140 hp Corvair engines tend to lose valve seat inserts if overheated. Rich S. 
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#2
January 28th 06, 03:50 AM
posted to rec.aviation.homebuilt
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Corvair conversion engines
Rich S. wrote:
"Peter Dohm" wrote in message . .. However, my real problem with the valve assertion is that I really don't know anyone who managed to run one of these little air cooled engines long enough and hard enough to burn a valve. The 140 hp Corvair engines tend to lose valve seat inserts if overheated. Rich S. Same with VW. Probably the same with any shrink in valve seats... Richard
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#3
January 28th 06, 10:06 PM
posted to rec.aviation.homebuilt
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Corvair conversion engines
On Fri, 27 Jan 2006 19:13:28 -0800, "Rich S."
wrote: "Peter Dohm" wrote in message ... However, my real problem with the valve assertion is that I really don't know anyone who managed to run one of these little air cooled engines long enough and hard enough to burn a valve. The 140 hp Corvair engines tend to lose valve seat inserts if overheated. Rich S. ANY aluminum head engine can loose valve seats. The secret is not to expect more of the engine than it can safely produce. They guy who did mine pinned them, but I don't plan on putting the pins to the test.
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