Re: Will straight pipe hurt motors??

Posted by jfp on October 13, 2005 at 20:55:48 from (64.12.117.7):

In Reply to: Will straight pipe hurt motors?? posted by logan on October 13, 2005 at 19:54:20:

Tractor engines don't turn as fast as car engines. A V8 with no muffler will soon burn up because at higher RPM the valves tend to "float" and need a back pressure for compression reasons. Same is true with a small lawn mower engine, no muffler no compression. Tractors turn slow enough for the valves to get completely closed instead of "floating" and that keeps compression which is power. I still would not run with no muffler even though it was done so for years on a WD that I grew up on. I'm not to good at explaining things but hope this helps.

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