The connected header pipes - Kawasaki Versys Forum
 
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post #1 of 5 (permalink) Old 12-19-2009, 05:48 PM Thread Starter
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The connected header pipes

Can someone please explain me or point me to explanation on what is the connected header pipes good for compared to more common unconcected header pipes.

TNX
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post #2 of 5 (permalink) Old 12-19-2009, 06:27 PM
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USUALLY the connected part (like the X-pipe in car headers) ends up broadening the torque curve.

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post #3 of 5 (permalink) Old 12-19-2009, 06:39 PM
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I believe the purpose is equalizing pressure between pulses at low RPMs.
At high RPMs the focus is on raw throughput, which is why the 650r does not have the H pipe.
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post #4 of 5 (permalink) Old 12-19-2009, 06:48 PM Thread Starter
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1. does it mean that will hurt the high RPM?
2. If yes for 1, if I can install a switch to block this pass at high RPM, can I enjoy the broad torque in low RPM and high HP at high RPM?
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post #5 of 5 (permalink) Old 12-19-2009, 06:57 PM
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Modern sportbikes actually have something very similar to what you describe which uses a servo motor to increase and decrease the exhaust back pressure based on RPM.

I doubt any such modification to the H-pipe section would produce a difference noticeable to the rider.

You'd get better results with less effort by installing Arrow headers.

I'm not an exhaust guru, though.
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