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Thread: any 86 T3 owners running a 39mm pwk? got questions

  1. #1
    Join Date
    Jun 2002
    Location
    Mississippi
    --
    2,552

    Question any 86 T3 owners running a 39mm pwk? got questions

    I have been building a 86 tecate and i am about to go for the 1st ride.

    here are the specs

    fresh top and bottom end
    CRF pipe and FMF silencer
    boyesen reeds
    factory air box with K&N filter


    Now i know jetting can be tricky and each machine is different but i am looking a starting point for my 39mm pwk carb. if youa re running one plese let me know what pilot jet and main jet you are running.


    83 ATC70
    85 ATC70
    85 200x vintage racer
    86 500r
    Lots of parts

    My 500R


  2. #2
    Join Date
    Apr 2007
    Location
    ohio
    --
    774
    When I bought my 39 pwk new for my 300r it came with a 160 main and a 60 pilot that would probly be a fair starting point..
    Airfoolers RULE!!!

  3. #3
    Join Date
    Jun 2002
    Location
    Mississippi
    --
    2,552
    that pilot sounds huge. my kx500 has a 45 in it.

    thanks for the help.

    i have a box of mains so i should be good. it has a 45 pilot and 175 main right now with a #6 slide. not sure on the needle.
    83 ATC70
    85 ATC70
    85 200x vintage racer
    86 500r
    Lots of parts

    My 500R


  4. #4
    Join Date
    Sep 2005
    Location
    MICHIGAN
    --
    2,027
    On my 86 KX250 I run 160 or 155 main and 40 or 45 pilot with POD filter.
    86 T3
    84 T3
    86 KX250

  5. #5
    Join Date
    Nov 2006
    Location
    southern oregon
    --
    2,338
    Quote Originally Posted by 200x Basket View Post
    it has a 45 pilot and 175 main right now with a #6 slide. not sure on the needle.
    I would start with that.. I run a 42/168 in my 250 with no airbox, but its only a 38pwk... My 39.5 I got from a kx500 came with 55/145 and a #7 slide.. but a 250 is likely going to need a much larger main jet than a 500 due to the weaker signal strength.. Starting way fat and changing jets several times is alot less work than replacing a top-end..
    2-stroke lover

  6. #6
    Join Date
    Dec 2002
    Location
    Orange County, NY
    --
    1,772
    Its kind of apples to oranges but I was running around a 185 in my 250R with a basically stock motor and just a little compression added. Actually, I had a PTR Hi-Rev pipe, DG silencer, K&N, no air box lid, and about 180psi of compression. I was running it on av-gas and at about sea level. I know its a totally different engine but hopefully it gives you a push in the right direction.

    John
    1985 Eddie Sanders ATC330r
    1986 Monstecate
    1984 ATC70 (awaiting 125cc transplant)
    1984 ATC125M
    1986 GSXR 750 - Keepin' it old school!
    1999 Arctic Cat 500 4x4 plow machine
    1999 Arctic Cat Thundercat 1000 (lake lizard)
    1996 Arctic Cat Jag 440 L/C (ditch banger)

  7. #7
    Join Date
    Jun 2002
    Location
    Mississippi
    --
    2,552
    thanks for the help
    83 ATC70
    85 ATC70
    85 200x vintage racer
    86 500r
    Lots of parts

    My 500R


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