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Old 02-09-2002, 06:45 PM   #1
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Default Does the ID of your header also tune the motor?

I have a header question: Does a smaller ID header tend to give more Low end torque and mid range, larger ID top end?
Or am I confused again, LOL.
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Old 02-14-2002, 04:57 PM   #2
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TTT

Would like to know as well. Dennis, if you could give us some input on what you think. Still deciding which header to go with. Thanks in advance.
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Old 02-14-2002, 10:51 PM   #3
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Default Re: Does the ID of your header also tune the motor?

[QUOTE]Originally posted by Foger Rox
[B]I have a header question: Does a smaller ID header tend to give more Low end torque and mid range, larger ID top end?

Foger Rox: Good question... a smaller inside diameter header
gives more low and midrange torque, while a larger diameter
header will move the power band up the rpm range. This all
relates to the velocity of the reflected pressure wave of the
exhaust gases back from the convergent cone inside the pipe,
and how it is directly affected by the length and diameter of
the header...length of pipe/header is more significant though.
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Old 02-15-2002, 09:34 AM   #4
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Thanks John!
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Old 02-15-2002, 01:50 PM   #5
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Hmmmm, (Roj scratches his head) OK. Thats what I thought. Opposite of the muffler.
Skinny pipe like a MIP=hi rpm, Wide pipe= torque.
So a skinnier ID header would make the exhaust pulse move faster, so it would be reflected back to the exhaust port earlier.
Cool, thanks.
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