Results 1 to 3 of 3

Thread: Is a 110 & 125m cylinder the same deck height?

  1. #1
    Join Date
    Mar 2010
    Location
    Wisconsin
    --
    201

    Is a 110 & 125m cylinder the same deck height?

    So I asked questions and did some research and ppl said that the 56mm piston kit will work on the ATC 90. I had to get a 110 cylinder, crank/rod, head bolts and timing chain. I brought the cylinder to the machine shop and they said the wall will be paper thin. So after I have all the parts now I can't do it. The 54mm piston on DrATV is probably a 14mm wrist pin. Will a cylinder off a 125m swap over to my engine? Would this solve the problem?
    1978 ATC 90
    22mm Keihin carb
    Ported intake/head
    Performance cam
    56mm 9.5:1 piston
    110 cylinder/crank
    110 cylinder/ timing chain
    Front drum brakes
    Brush guard
    Complete rebuild to a 122cc
    Complete frame off restoration.
    $1400 invested

    1983 ATC 110
    22mm carb
    Ported head/intake
    Performance cam
    56mm 9.5:1 piston
    Complete rebuild to 122cc
    Complete frame off restoration
    $1000 invested

    1984 200x
    26 mm carb.
    CR85 rear caliper
    TRX hubs/rims
    $871 invested

  2. #2
    Join Date
    Feb 2003
    Location
    Australia
    --
    927
    No. They have a different way of bolting down as well.
    Get them to bore the 110 cylinder. It will be fine and as long as you don't thrash the crap out of it continuously.
    I keep mentioning you have to bore your cases as well.

  3. #3
    Join Date
    Mar 2010
    Location
    Wisconsin
    --
    201
    I already did that myself. The shop said they couldn't set it up to bore. I took a 60 grit flap wheel and a die grinder and got it to 57.8mm.
    1978 ATC 90
    22mm Keihin carb
    Ported intake/head
    Performance cam
    56mm 9.5:1 piston
    110 cylinder/crank
    110 cylinder/ timing chain
    Front drum brakes
    Brush guard
    Complete rebuild to a 122cc
    Complete frame off restoration.
    $1400 invested

    1983 ATC 110
    22mm carb
    Ported head/intake
    Performance cam
    56mm 9.5:1 piston
    Complete rebuild to 122cc
    Complete frame off restoration
    $1000 invested

    1984 200x
    26 mm carb.
    CR85 rear caliper
    TRX hubs/rims
    $871 invested

//ArrowChat Integreation Code //