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Thread: Project Poor Boy 310

  1. #1
    Join Date
    Oct 2004
    Location
    Sandilands Manitoba
    --
    24

    Project Poor Boy 310

    I really want to try this sprock 310 kit I got for the Z but I can't shell out the $$$ right now for a new pipe and carb. What I do have is a PWK 35 mm carb but would like some input on where to start jetting. I also have my stock head pipe and doing the wrench report phase 1 mod should get me in the right direction, eh guys? Anyone hack their head pipe before and have better performance? Please remember I am on a budget of $0 so the jets and air filter will have my crazy wife flippin out on me. I also found a couple of interesting tid bits about the PWK 35. See here in these links.

    http://http://www.patriotracing.net/250R


    http://http://www.mossbargerracing.com/tuning.htm
    1985 Yamaha YTZ 250
    1988 Kawasaki KX 125
    1995 Yamaha V Max 600

  2. #2
    Join Date
    Jan 2006
    Location
    conesus lake NY
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    11,894
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    1
    I run the phase two setup with a DG pipe.. on vp 110,sprock head,, it rips just fine..


    bigger carb would be a good step above the stock 32

    start collecting cans along the road and buy some jets for that 35mm
    Attached Thumbnails Attached Thumbnails 100_0410.JPG   100_0409.JPG   100_0406.JPG   2007_1219phase20001.JPG  

  3. #3
    Join Date
    Jan 2006
    Location
    conesus lake NY
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    and Im at a 80mm bore thats about as close as you gonna get to a sprock 310 hahahahah

  4. #4
    Join Date
    Sep 2005
    Location
    Missouri
    --
    469
    Do you mean .080" over bore? hehe. You cant be at a 80mm bore looking at the amount of aluminum in the boysen ports. Figure out what jets you need and I will ship you out some for free.

  5. #5
    Join Date
    Jun 2005
    Location
    Jackson MI
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    1,688
    A 45 pilot, and 170-180 main will get you close.

    83 ATC 60-R Cr60 converted with Zinger parts.
    83 ATC 70.
    83 Tri zinger
    ATC 85-R Cr85 engine on shortened 86-R frame.
    ATC450AF
    86 310-R Drag racer
    440 snowmobile powered custom built.
    87 Cr 500 Converted to Drag racer

  6. #6
    Join Date
    Jan 2006
    Location
    conesus lake NY
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    Quote Originally Posted by TRITecate350 View Post
    Do you mean .080" over bore? hehe. You cant be at a 80mm bore looking at the amount of aluminum in the boysen ports. Figure out what jets you need and I will ship you out some for free.
    yes thats what I ment hahahh

  7. #7
    Join Date
    Oct 2004
    Location
    Sandilands Manitoba
    --
    24

    Gitter done

    Figure out what jets you need and I will ship you out some for free.
    Yer the best Sprocky Claus but I saw Moose 53s post here http://http://www.3wheelerworldforum...ad.php?t=81073 Im gonna try these this week on the mill and see what I get. Im really thinkin about cutting 10mm from my stock header like in the wrench report. Theres a dent there anyways. Anyone try this mod? Results?
    1985 Yamaha YTZ 250
    1988 Kawasaki KX 125
    1995 Yamaha V Max 600

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