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Thread: 10.25 comp piston question

  1. #1
    Join Date
    Nov 2003
    Location
    Oswego, IL
    --
    1,858

    10.25 comp piston question

    what kinda gas do i gota run with a 10.25 comp. can i use regular?
    1974 atc 90 project underway cuzzztom

    1985 atc 110 for sale

    84 200s all original got off the first and only owner
    new carb
    maybe putting my 200x cam in it but not sure

    old trike
    1985 200x
    12.1 piston
    oil cooler kit
    white bors cam
    super trapp exhaust
    uni clamp on air filter
    350x front end

  2. #2
    Join Date
    Sep 2002
    Location
    Washingtons Crossing, Pa.
    --
    2,977
    87 will run but not great ..... 92 will run much better.
    J. Jonny D, --- Quad - Trike relations committee Chairman and all around swell guy.

    Rides: '91 Warrior, '87 TW200, 1984 YTM225DX, 1984 ATC125M, '71 CL350 Scrambler

  3. #3
    Join Date
    Jun 2004
    Location
    Mississippi
    --
    83
    It's best to run 92 in your bike even if it is stock. In my opionion octane helps alot. My 85 250R is pretty much stock and I run 93 octane. When I go to the dunes I mix 93 and 110 50/50 and it makes the bike run much better. It seems to improve the throttle response alot the last time I was there I ran atleast 10 gallons through it because I was there a whole week and I had no engine damage so I think it is ok to say it is safe.
    2000 Banshee: Modded out!!!
    1985 ATC 250R: Bone stock but not for long.
    1984 ATC 185S: Modded out!!
    1979 ATC 110: Stock execept fork extentions
    1984 ATC 110: Same as above


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