Home Forums 2-Cycle Racing Piston arrow

This topic contains 5 replies, has 3 voices, and was last updated by  Tom Petalino 2 years, 3 months ago.

Viewing 6 posts - 1 through 6 (of 6 total)
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  • #50201

    Tom Petalino
    Participant

    Should the arrow on a Burris piston always face toward the exhaust or intake? Yamaha kt 100 .

    #50256

    Greg Wright
    Participant

    Exhaust

    Greg Wright
    Rapid Racing Inc.

    "When in doubt Gas it, It won't help but it ends the suspense."

    #50361

    Walt Gifford
    Participant

    LOL, you poppin’ in one of those 54mm jobs? The anti rotation pin on the ring goes to the carb side. Arrow points to exhaust.

    Gif

    FAA certified jet engine and aircraft technician,
    Nicholson Speedway class champion 2001,
    Yamaha KT100 Service Center,
    41 years karting experience

    #50373

    Tom Petalino
    Participant

    Thanks for the response guys. I bought a cheap ebay motor for practice. Honed the cylinder and put a piston ring and bearing.  Cylinder looked good, no scratches or grooves.  Set the ring gap but did not check squish. I used the same spacers over again. I have no idea about bottom end hours on it.  I’ll see how long it runs next week.

    #51109

    Walt Gifford
    Participant

    I’ve bought allot of old KT100’s from various places and the main thing is carry a spare ignition coil with you.

    Gif

    FAA certified jet engine and aircraft technician,
    Nicholson Speedway class champion 2001,
    Yamaha KT100 Service Center,
    41 years karting experience

    #51146

    Tom Petalino
    Participant

    Thanks Walt, that is one spare part I don’t not have in the trailer.  Ordering one tonight. Running senior pipe and lo 206 this year. Hard to keep all the spares stocked.

Viewing 6 posts - 1 through 6 (of 6 total)

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