1991 Trek Aluminum w/ front suspension

Discussion in 'Photos & Bicycle Builds' started by Fast Shag, May 18, 2015.

  1. Fast Shag

    Fast Shag Member

    Runs like a bat outta hell! piston and jug ported, matched, 6.0 high comp head, 41 tooth sprocket, del clone carb, tops out so far @ 38 mph with a little left left in the throttle. got header tape on it now.....

  2. jaguar

    jaguar Well-Known Member

    ever burn your leg on the pipe?
    what are the port durations?
    save yourself a trip to the hospital and put a front disk brake on it. :ack2:
    Last edited: May 18, 2015
  3. Fast Shag

    Fast Shag Member

    got header tape on it now, but yes, once..... let's not get all techy on me. raised exhaust 1.3 mm, widened by almost 4 mm, lowered intake 1.5mm, widened by almost 4 mm. I played with height of exhaust til I like the top end max rpm without making it fall apart on me. cut piston skirt flush w/ top of intake, piston ported to allow transfers to be all the way open and same with exhaust. vibs are low throughout power band. top end screams. I don't run WOT too much, great low end with plenty of top end power.
  4. Fast Shag

    Fast Shag Member

    [video]https://youtu.be/XiWdUMXkty8[/video] Some dirt and pavement riding, great up hill climbing, RPMs get high at end but not fully....
  5. Fast Shag

    Fast Shag Member

    stops on a dime. front brakes are on it now after pic was taken