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  1. #1
    yz450f's Avatar
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    gpr800 big bore cylinders

    ok i have a project 800 goin on and i want to know if anyone know how much approximatley it costs to get cylinders bore
    its only a twin so its obviously not as much as a 12 or 1300. or should i just get my cylinders ported by lowell?
    i like the idea of a big bore 800 but i dont know how much it costs.


  2. #2
    Jay the price of which it will cost you after all said and done it would be cheapr to by my 1300 and keep yours stock.
    You need
    T/W crank $150 if yours measure right
    Bigger carbs $1500
    87mm pistons and rings which you can only get from certain people $500 maybe more I forget
    should have the V force reeds $500 plus the adapter plate $100
    Boring, porting, platings I think it was close to $1000 or so
    Head redone $150
    now u need yet another prop $200
    I may be forgetting some things, not as easy as it sounds just to throw new cylinders in, plus you better pray you getting the jetting real fat or your first START will destroy your total investment!!!!!

  3. #3
    yz450f's Avatar
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    dam
    i didnt think it would cost that much
    ill stick to little things
    i mite be able to get my hands on a lightly used jims plate for 275

  4. #4
    List keeps going dude, for got top coating pistons $150.
    I can think of other stuff too. I told you I'm nuts and spent TONS!!!!!!!

  5. #5
    yz450f's Avatar
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    yea i think im gonna stick with the smaller mods
    have u dont the accelerator pump removal thing
    i pulled my exhasut today and i found that it was stuck again after i had bought a new one last year
    i think i wanna just get rid of if i can

  6. #6
    WATER WOODY's Avatar
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    YZ,check your pm.

  7. #7
    yz450f's Avatar
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    i did
    thanks water woody

  8. #8
    WATER WOODY's Avatar
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