Results 1 to 5 of 5

Thread: what compression anyone plase give me your input

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

    what compression anyone plase give me your input

    what compression standard, 10.25 or 12.0 leave a reasons for your answer. o and this is on an 85 200x with 350 forks and 350 rear shock it also has a clamp on air filter and cobra exhasut.

    thanks
    JIm
    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
    KASEY's Avatar
    KASEY is offline weee weeee weeeeeeeeeee ! ! ! The day begins with 3WW
    Join Date
    Jan 2003
    Location
    ARIZONAS BIGGEST TROUBLEMAKER
    --
    4,245
    if you want to spend 4plus dollars a gallon for higher octane gas then 12 to 1 is ok,,,

    i say 10.25 is plenty since your not racing or anything,,,

  3. #3
    Join Date
    Nov 2003
    Location
    Oswego, IL
    --
    1,858
    wont the 10.25 and the 12.1 take the same gas? o and these are white bros pistons.
    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

  4. #4
    eh_tee_see's Avatar
    eh_tee_see is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    Feb 2004
    Location
    Bristol Bay Alaska
    --
    295
    nope. the 10.25 will run on regular unleaded gas but the 12:1 will need high octane shizzle. you're best bet is to go with a 10.5:1 compression piston. besides, the 12:1 piston will leave bruises on your shin from kicking it over.
    The below sentence is TRUE.
    The above sentence is FALSE

  5. #5
    Join Date
    Nov 2003
    Location
    Oswego, IL
    --
    1,858
    alrighty then if the 10.25 uses normal gas then that is my choice. well mabye. is there a hugh difference in powerr going from the standard to the 10.25? and is there a much bigger difference going from standard to the 12.1?
    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

//ArrowChat Integreation Code //