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  1. #1

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    Installing wiseco pistons on 06 rxp???

    HI guys I am rebuilding my motor with wiseco pistons and when I pulled the pistons out I didnt notice what way the arrow was going that is on top of the pistons. I do know though on some small motors it goes toward the exhaust but I just want to double check. Any help would be great.


  2. #2
    boost junkie skidoochris's Avatar
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    sounds right

  3. #3
    speedjunky787's Avatar
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    You can also go by the valve grove size!!!

  4. #4
    mikelytle1077's Avatar
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    Arrow towards the exhaust

  5. #5
    Eastside Powersports Slow 91's Avatar
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    arrow to the exhaust is the norm, but please verify that by the valve reliefs!

  6. #6
    gp1200rider's Avatar
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    Check your ring end Gap .

  7. #7

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    Thanks for your replies, the valve reliefs are the same on both sides so I was going to put the arrow toward the exhaust anyway just by habit. I have to gap the rings also to spec but once I do ill post pics. Thanks everyone

  8. #8
    Got Boost? psycho rxp's Avatar
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    Big reliefs intake side
    Smaller reliefs exhaust side

    Also take a straight edge, across the top deck, once installed, to make sure they dont hit the head @ TDC........
    and make sure to use an OEM head gasket as well

  9. #9
    Just built 2 - 215 Engines with WISCO Pistons. Both are back on the Water Running Hard!!!!!!!!! Arrow towards Exhaust is Correct.

  10. #10
    Quote Originally Posted by psycho rxp View Post
    Big reliefs intake side
    Smaller reliefs exhaust side

    Also take a straight edge, across the top deck, once installed, to make sure they dont hit the head @ TDC........
    and make sure to use an OEM head gasket as well
    Good advice.

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