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Thread: Low Temp Jetting

  1. #1
    Join Date
    Jan 2004
    Location
    NJ
    --
    1,646

    Low Temp Jetting

    For winter riding will I need to change the size of my jets on a 2 stroke?
    3 CR500R's and counting. Do I really need 4???
    Do I really need 9 Tigers?
    Laegers ATC500R
    DO NOT send any thing to whats his face (dirt-face/crasher) here on the board. What a scum bag. He screwed (stole) money from me and screwed me on my ME360 and Hondaline 300R engine rebuilds.

  2. #2
    Join Date
    Aug 2006
    Location
    Arlington, Wa
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    1,027
    yes, the cool air is much more dense, so you need to fatten up the jetting. I've read that for every 15 degrees of temp change, it is roughly one jet size.
    Charlie Don't Trike

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  3. #3
    Join Date
    May 2007
    Location
    Coshocton, Ohio
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    1,815
    It probably wouldn't hurt to richen it up a bit. You could no doubt get all of the adjustment that you will need out of the needle and the air/fuel screw. Most people tend to run a little fat on the mains and they aren't a real big factor unless you are riding at 3/4 to wot most of the time.
    Appalachian American Racing
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