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Old 12-02-2012, 03:05 AM
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Originally Posted by poncho62 View Post
Old wives tale
Of course it is.

I watch oval track races at the Taft track (Orlando Raceway) back in the '60s that had many low-buck race cars that used absolutely NO exhaust manifolds at all- nothing, zip, zilch, nada.

These guys were not front runners, mind you- they were in it for the fun of it. But these same guys- running the same engines- were there week in week out, for the entire season, and there's no reason to think these same engines weren't run for several seasons, and know what? Nary a warped valve to be seen.
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