Re: Straight Pipe

Posted by Andy Martin on January 29, 2006 at 14:29:20 from (216.150.108.59):

In Reply to: Straight Pipe posted by Dellbertt on January 29, 2006 at 13:08:40:

There is some advantage to having enough pipe so that momentum of the exhaust gas out of the pipe form one cylinder helps "suck" the exhaust out of the next cylinder.

A tuned exhaust does make an engine breath better, just as too long or too short makes it more difficult.

Beside burning valves, in engine run without an exhaust pipe each cylinder has to start the gas moving against still air, where if the pulse from the cylinder before it was moving out the exhaust pipe, it helps pull the exhaust from teh new cylinder.

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