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  1. #1

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    Pump blueprinting/extrude hone

    Im sure this has been discussed before but cant find anything on it,but what would the results be if a gpr pump was blueprinted and then sent to extrudehone for a complete flow/polish? i have had some thing extrudehoned years ago and they looked like a mirror when i got them back! this would almost have the give you a more efficient pump and would most likely relieve a lot of preasure inside the pump.has anyone tried this?


  2. #2
    philip_gpr's Avatar
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    pump - waste of time, no gain

    extrude honing the exhaust provides a small gain, but it is an expensive mod

  3. #3

  4. #4
    Moderator RX951's Avatar
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    Quote Originally Posted by philip_gpr View Post
    pump - waste of time, no gain

    extrude honing the exhaust provides a small gain, but it is an expensive mod
    +1

  5. #5
    African-American
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    it would be better value upgrading to an HO pump.

    hehe.. i run a blueprinted 03 pump.

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