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  1. #1

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    Need jetting specs 1300r lowell horning port

    Does anyone have any jetting specs on a lowell horning ported 1300r motor,mine is lean, i have been told that Lowells motors with his port work need alot of fuel,,,anyone know,,I need some more [email protected] for any info


  2. #2
    KamikazeGPR's Avatar
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    You have a ported 1300 single pipe and you took the e.f.i off and went to carbs?

    I may be smoking crack, But this is your 2nd question in 30 minutes that doesnt make sense. It almost seems like questions that gpr1300 powerhouse guy would ask.

    If i am wrong, I apologize...

  3. #3

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    no its a 2000 1200r rebuild to 1300r 84 mm pistons,sorry for the mix up
    who is powerhouse,,i am just trying to get my ski right ,and have some fast speed runs,any info will help......
    Last edited by gpr-mike; 06-03-2007 at 04:40 PM.

  4. #4

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    What is your jetting that it is running lean?

  5. #5

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    May 2007
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    jets

    120 pilot 150 main

  6. #6
    KamikazeGPR's Avatar
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    2000 rebuild to 1300r by lowell horning,,,same cases,48mm novis,v-force3 reeds,milled head 150 psi,rad light flywheel,stock cdi,gas valves,free flow exhaust,14/23 prop
    69.9 at 7010
    this is his setup he pm'd me

  7. #7
    '02GPRider's Avatar
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    Quote Originally Posted by gpr-mike View Post
    120 pilot 150 main
    Something doesn't seem right. I have a 1300BB that's ported by Lowell. I'm running 120 lows and 130 highs and it's somewhat rich. Did you pressure test it when you put it together? You may have an air leak.

  8. #8

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    Cool

    yes ,have been told my new set up should be 115 lows and 130 mains so he he has air leak or fuel press low!!

    check carbs bad fuel pump?
    bad fuel pick up OR fuel switch

    or just bull!!

    later cd

  9. #9
    Pistonwash's Avatar
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    NOVI carbs are freaky when trying to find the right main jets..PM sent. They are MUCH different than OEM's or any other carb jetting specs..believe me , I found out the hard way.

  10. #10

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    Does Lowell not give jetting specs when you have porting done?

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