OEM left crossover pipe?
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Joined: Feb 2012
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From: N. Virginia
OEM left crossover pipe?
Does anyone manufacture an aftermarket OEM left crossover pipe? There are a few great head pipes out there along with de-cated OEM pipes, but everytime I see that left crossover, it makes me wonder how restrictive it really is.
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From: Phoenix '53, '88, '09 Big Twins
I'm not quite with your question-
but my experience with 88, 95 and 09 stock bagger type headers ( all no cat), has about 70% of the flow from the right muffler on all 3 designs.
probably close to 100% of the front cylinder goes to the right side, and the rear is split between the right and left sides- this may equalize more with high flow ( high rpm) if the right muffler is flowing all it can...but I use hi flow mufflers ( supertrapps) so I dunno
Mike
but my experience with 88, 95 and 09 stock bagger type headers ( all no cat), has about 70% of the flow from the right muffler on all 3 designs.
probably close to 100% of the front cylinder goes to the right side, and the rear is split between the right and left sides- this may equalize more with high flow ( high rpm) if the right muffler is flowing all it can...but I use hi flow mufflers ( supertrapps) so I dunno
Mike
Last edited by mkguitar; Apr 8, 2012 at 07:09 PM.
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From: New England
Some have successfully plugged the left side completely if that gives you any idea.
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Joined: Jun 2007
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From: Ashby, Ma
An important benefit of the cross-over pipe is the scavenging effect. Exhaust from the previously fired cylinder creates a "pull" to the firing cylinder and adds power in the form of torque to the engine.
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