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  1. #1

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    2008 GPR1300,how much to run high 70's?

    If a guy was to buy a brand new 2008 GPR1300 how much $(give or take) would it take to run high 70's,handle well,and not tear into the engine.(no cylinder removal)?


  2. #2
    Happily Self-Employed WFO's Avatar
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    Quote Originally Posted by jy View Post
    If a guy was to buy a brand new 2008 GPR1300 how much $(give or take) would it take to run high 70's,handle well,and not tear into the engine.(no cylinder removal)?
    you will need porting to consistantly run high 70s

    now 75s you can do with just bolt ons

  3. #3
    no reverse jayohentran's Avatar
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    wfo, what mods would you suggest doing to be in the 70-75 range without touching the engine? I am also looking to mod mine this year.

  4. #4
    Happily Self-Employed WFO's Avatar
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    First off the necessary things... tunnel reinforcement, seal the pump shoe, intake grate, ride plate, recommend jetworks mod, step the sponsons

    For 75 your engine will need D-plate, reeds, keyway, air filter (or Rosses mod), compression, Dynafly propeller.

    70s can be had with just D-plate and air filter in engine bay.

  5. #5

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    Cool

    Quote Originally Posted by WFO View Post
    you will need porting to consistantly run high 70s

    now 75s you can do with just bolt ons
    rich ya got it backwards

    later cd

  6. #6
    Happily Self-Employed WFO's Avatar
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    Quote Originally Posted by chip View Post
    rich ya got it backwards

    later cd
    high 70s to me is like 78, 79 mph

  7. #7

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    Cool

    Quote Originally Posted by WFO View Post
    high 70s to me is like 78, 79 mph
    I see

    later cd

  8. #8
    no reverse jayohentran's Avatar
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    thanks!! time to start making my list.

  9. #9
    08GPR's Avatar
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    Quote Originally Posted by WFO View Post
    First off the necessary things... tunnel reinforcement, seal the pump shoe, intake grate, ride plate, recommend jetworks mod, step the sponsons

    For 75 your engine will need D-plate, reeds, keyway, air filter (or Rosses mod), compression, Dynafly propeller.

    70s can be had with just D-plate and air filter in engine bay.


    WFO, I am running the D-plate among the R&D grate and plate, PPK stepped sponsons and only get consistent 65-66 GPS , would the air filter really give me the extra 4 or so miles? Is it really neccessary to re-inforce the tunnel right now with my mods so far?

    Thanks

  10. #10
    Mik72e's Avatar
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    I think we need to check your pump shoe height you should be closer to 69mph

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