Cross over pipe

Discussion in 'Touring Models' started by anjumkha, Apr 27, 2011.

  1. anjumkha

    anjumkha Member

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    eGlide 2007

    What is the purpose of the cross over pipe?
     
  2. RibEye

    RibEye Junior Member Contributor

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    As far as I can tell, it is to increase overall exhaust flow velocity, improving the scavenging (emptying) of the contents of each cylinder during its exhaust stroke, with the inertia of exhaust gasses from one cylinder being able to draw/suck on the other cyclinder's exhaust port, helping it empty more quickly and completely.

    Enjoy,
    Rich P
     
  3. wilks3

    wilks3 Junior Member

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    Exactly RibEye, Helps balance system to pull more spent gases out of cylinders.
    wilks3
    :USA
     
  4. Dr.Evil

    Dr.Evil Junior Member

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    It sounds right, except that you can not draw exhaust from the other cylinder on it's compression stroke. It was my understanding that the crossover allowed pressure wave build up, a low pressure escape path to flow into, allowing for better flow over all and better cylinder scavenge. The MoCo may test the exhaust for the location of pressure points in determining where the co pipe should go.
     
  5. slayer

    slayer Member

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    If you are really interested check out RB racing's website. They go into great detail to explain this. Sounds pretty intense the lengths they go through to figure it all out.
     
  6. mike5511

    mike5511 Member

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    I just went from tru-duals back to a stock header. I was looking for more torque. (went with Jack Pot Dyno Tuned mufflers) Seems to have helped.