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  1. #1
    spud's Avatar
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    36cc Heads on a 1300 Conversion

    What would the cranking compression be for a 36cc head on a Lowell Horning ported, 1200R converted to a ported 1300.

    I was looking at some heads on R&D's site. 36cc sounds a little tight for pump gas.


  2. #2
    ramnj's Avatar
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    Hey Spud, have you been able to do any more testing on the 1200R?

  3. #3
    WATER WOODY's Avatar
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    Spud,i have special cut 38cc domes on my triple BB @ 4100' elevation,getting 150psi.Im guessing a 36cc dome would give you about 180-200lbs.

  4. #4
    spud's Avatar
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    Thats what I was thinking Woody. I don't want to go over 150. R&D has the heads listed right on their website. I am leaning towards the 3 piece heads so I can control the water better.

    Ramnj

    I havent taken the ski back out. I did get a new grate from Carl and the ski is ready to go. I might get out sometime between now and New Years. We are starting up production for parts on the new Boeing 787 and I am really busy. I will end up working most of the break. I also promised a friend that just bought a quad that I would go out to Glamis with him.

    I have been purchasing a lot of parts for the GPR though.

  5. #5
    ramnj's Avatar
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    Good luck and don't work too hard

    Keep us posted on your progress!!

  6. #6
    Pistonwash's Avatar
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    Spud..just give Lowell a holler, he ain't doing anything but taking naps and shoveling snow.

  7. #7
    All hail the Chief! fullboogie's Avatar
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    Spud, I'd ask Lowell.

  8. #8
    spud's Avatar
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    Thanks, I tried to call Lowell a little while ago.

  9. #9
    Hydrotoys's Avatar
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    Did you spin the dome to 84mm too? That would be an issue.

  10. #10
    spud's Avatar
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    I was looking at the wrong heads. The 1300 heads are 45cc

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