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carburetor jetting

  1. 1993 yz 80 bogs in powerband

    Yamaha Dirtbikes
    Hi I recently bought a 1993 Yz 80. I was told that it has a big bore kit on it but I don't know what size it is. My bike usually bogs in the powerband but sometimes it runs good. It usually runs good in lower temps. I'm mixing my bike at 32:1. My pilot jet is #40(+5 than stock) and my main...
  2. Piston mark please help!!!

    Honda TRX 250R
    will this mark on this piston affect anything??? its like brand new. rebuilt motor and can not get it to run right. misses in mid range and no top end. changed the whole electrical system rejetted many times. up to a 178 now. before rebuild and bore i was running 168 main jet. new reeds also...
  3. A few questions after restoring my quadracer

    Suzuki LT250
    I just got finished tearing everything apart, painting the frame, installing a new swing arm after the other one snapped, and now I'm in the process of putting it back together. I was wondering where the wire goes from the rectifier/regulator, it's greyish white and I ran out of places to plug...
  4. 39 keihin pwk jetting?

    Suzuki LT250
    I just bought a 39mm pwk carb bored out to a 40.5mm, I need to get it jetted for my bike (less than 1000 ft sea level) Mod list (1985 lt250r): 1.5mm over piston, port and polish, no air box, uni air filter, stock reeds, fmf silencer with stock fatty. The jetting right now is 48 pilot and 165...
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