Straight pipes or not? - Page 5 - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #41 of 42 (permalink) Old 05-01-2020, 01:04 PM
Grumpy Old Man
 
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PO had put Vance and Hines on bike before I bought. Too loud for me so I repacked & eventually got their extra slip in baffles. Happy with it now.
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post #42 of 42 (permalink) Old 05-02-2020, 09:56 PM
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Quote:
Originally Posted by Jason Pittenger View Post
Ya even the top fuel dragsters run some sort of pipes attached to the ports.
It has to do with some length of pipe can actually reduce the back pressure to the ports
No, thats wrong. Its because the raw velocity energy in their exhaust provides some downforce/thrust. It has absolutely nothing to do with "backpressure".

1989 VN750
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