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Thread: new piston and cam making a klinging noise

  1. #1
    Join Date
    Jul 2004
    Location
    lynx, ohio
    Posts
    29

    new piston and cam making a klinging noise

    i just put in a new wiseco forged piston and a hotcams stage 1 in and its making a klinging noise any ideas

    its in time i checked
    2001 400ex
    k&n filter
    dynojet
    hotcams stage 1
    wiseco piston
    full yoshimura exhaust

    2005 yfz 450 le
    a/b lid removed
    baffle removed
    cam mod
    NCVQ needle 5th clip,168 main,45 pilot

  2. #2
    Join Date
    Jun 2002
    Location
    Seems like I'm always at work
    Posts
    3,546
    did you adjust your valves to the specs of the new cam?
    '02 Red 400
    It's faster now then when I bought it!

  3. #3
    Join Date
    Sep 2004
    Location
    shreveport, Louisiana
    Posts
    544
    the piston will make the noise until it warms up and expands in the cylinder, its normal.
    the hot cam will also make a ticking noise at all times even after the valves are adjusted right, they are just louder than stock cams.

  4. #4
    Join Date
    Sep 2003
    Location
    West KY
    Posts
    1,401
    how loud is this. if it's pretty loud it could be that ur timing is a little off. mine was off enough that the valves were hitting the piston, and the timing was correct. i found that my timing chain was stretched enough that the timing was off. so this could be the prob.... or valves need tightening
    2005 YAMAHA YFZ450
    +2 HOUSER aarms and steering stem flag, Elka front shocks, LSR axle, Dr. D slip-on, cam mod, AC nerfs and bumper, pro-design kill switch, Pro-Taper bars, One Industries graphics kit, pro-design case saver, PEP chain roller relocator, ebrake blockoff, Zip-ty fuel screw, carbon fiber brake rezzy relocator, 400ex throttle, a lil pc'ing and polishing

    rear shock rebuild soon

    172main, 48pilot, 35 leak, 6th position on stock needle, 2.5 turns out, and a brown spark plug!!

  5. #5
    Join Date
    Jul 2004
    Location
    lynx, ohio
    Posts
    29
    it was just where i hadnt adjusted the valves. after i done that all you can hear is the ticking of the new cam.
    2001 400ex
    k&n filter
    dynojet
    hotcams stage 1
    wiseco piston
    full yoshimura exhaust

    2005 yfz 450 le
    a/b lid removed
    baffle removed
    cam mod
    NCVQ needle 5th clip,168 main,45 pilot

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