crf80 vs crf100 and mods

Discussion in 'Mini Racing' started by jboyd12, Jul 15, 2012.

  1. jboyd12

    jboyd12 Well-Known Member

    80 vs 100, i have owned both when i was younger but is there really that much of an advantage to the 100 besides the power and the lager wheels. I am only asking this silly question because i have the chance to pick up a like new crf80.

    next question what are the worth while mods to do to an crf80 to give it a little more juice?

    Thanks guys
  2. backcountryme

    backcountryme Word to your mother.

    I think there are more mods for the 100. But the hp difference is less then 2hp stock. I believe the 80 has a closer ratio transmission. I have been eyeing up putting an xr/cfr 80 in a YSR for kart track racing. I am also thinking of putting an XR200 in my other YSR for our formula class.
  3. TurboBlew

    TurboBlew Registers Abusers

    i bought my son an 80. I have the 100. even with jetting, airfilter, and gearing... the 80 is a dog compared to a stock 100. But could be the carb on the 80 isnt the same at the 100.
  4. Mook

    Mook Well-Known Member

    could be. could be 20% more displacement-
    80zan80 100's a 100. you want that wheel?
  5. nigel smith

    nigel smith Well-Known Member

    My CRF 100 made almost 6 horsepower at the rear wheel stock, on the dyno. 1 or 2 horsepower is a huge percentage of that.
  6. Mook

    Mook Well-Known Member

    yeah- i had a CRF80 with a 100 kit but it was still not in the same league as a stock 100.
    i have a BBR cam and springs for the 100... p.m. offers

    YZROOSTINYA Well-Known Member

    if you do an 80 with a 100 kit you have to use the 100 carb.

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