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back pressure issues on 82 xj650

Discussion in 'XJ Technical Chat' started by Savannah650, Jul 21, 2014.

  1. Savannah650

    Savannah650 New Member

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    Ok so im running open headers and im trying to find something to build up some back pressure.. I know HD has power cones to reverse airflow from the header. Anybody know if these exists for my yami?
     
    Savannah650, Jul 21, 2014
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  2. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    "Back pressure" is a myth; you need to do some research on exhaust tuning.

    If you're going to run open headers, even with "Snuf-R-Nots" or the like, you're going to need to rejet.
     
    bigfitz52, Jul 21, 2014
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  3. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    The xj is such a free-breathing bike, there's not much back-pressure to begin with.

    If you need more back-pressure, then I bet you're losing compression somewhere in the engine. Do a compression test and let us know what the numbers are ......

    dave f
     
    hogfiddles, Jul 21, 2014
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  4. wink1018

    wink1018 Active Member

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    Lollipop baffles!!!!!!
     
    wink1018, Jul 22, 2014
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  5. junkmn

    junkmn Member

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    junkmn, Jul 22, 2014
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