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Thread: gpr 1200 pop

  1. #1

    gpr 1200 pop

    If and when my motor will let go what is the best thing to do. Replace the 1200r motor. Get a bigger bore and make it bigger (can you do this a 66v bore) Or change the hole setup.

    Also so can i put the comp up to 150psi with standed carbs and exhaust, just get the head milled. Would like more bottom end punch to get over those waves.

    Any help would be great thanks.


  2. #2

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    with some upgrades you will need to rejet the carbs & go with choke plates removed & fa's & a primer kit, use the search feature lots of info on upgrades & porting

  3. #3
    zx11rider's Avatar
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    Quote Originally Posted by 66V View Post
    If and when my motor will let go what is the best thing to do. Replace the 1200r motor. Get a bigger bore and make it bigger (can you do this a 66v bore) Or change the hole setup.

    Also so can i put the comp up to 150psi with standed carbs and exhaust, just get the head milled. Would like more bottom end punch to get over those waves.

    Any help would be great thanks.
    You need a ported 1300 topend so you can beat the stock gprs and new fzrs pm Lee he has one for sale.

  4. #4
    what would a 1300 top end be worth?

  5. #5
    L Carlson's Avatar
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    Depends on what you want stock or ported?
    FS Tim Judge ported 1300 set up ready to bolt and go! ( 1 2)

  6. #6
    WATER WOODY's Avatar
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    Finding a good used 1300 top end would be a nice upgrade. You can also bore,port your current 66V setup.

  7. #7
    WATER WOODY's Avatar
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    Quote Originally Posted by L Carlson View Post
    Depends on what you want stock or ported?
    FS Tim Judge ported 1300 set up ready to bolt and go! ( 1 2)
    There's a great deal!

  8. #8
    Moderator RX951's Avatar
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    Quote Originally Posted by L Carlson View Post
    Depends on what you want stock or ported?
    FS Tim Judge ported 1300 set up ready to bolt and go! ( 1 2)
    I concur, that is a good deal

  9. #9
    You can't beat the price of the 1300 topend Lee is selling. He can give you all the jetting specs, remove your choke plates add primer and you will have more bottom end and top end.

  10. #10
    Hydrotoys's Avatar
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    How fast do you want to go, and how much do you like to mod?

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