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Thread: Crank Seal and Tri Z...Questiion!!

  1. #1
    Join Date
    May 2003
    Location
    Houston, Texas
    --
    2,409

    Crank Seal and Tri Z...Questiion!!

    Can you change the oil side crank seal in a Tri Z without splitting the cases?

    How about the ignition side?

    Thanks

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    1986 ATC 250r, 1986 Tri Z, 1990 LT 500R "Quadzilla"


    Dirtbikes:

    1994 KTM 550 MXC (yes its a two stroke...66 hp stock!)
    1988 Yamaha DT

  2. #2
    Join Date
    Nov 2003
    Location
    Front royal, va
    --
    2,186
    yep, doing mine wednesday night
    left side , pull flywheel, remove stator, pry out with a screwdriver
    lube the new one up real good, use a deep socket to drive home
    right side. remove clutch cover, clutch basket, remove crank/waterpump gear
    then there is a +screw with a metal holding thingy holding the seal in behind the clutch basket,
    once out pry out with a screwdriver the seals are like $8 each


    if you dont get it going PART IT OUT!!!
    1985 With "86" Plastic's,Custom 12" Alluminum Extended Swing Arm,39MM PWK,"TRX" Filter,9 Paddle TALLER HALLER'S on 11" Wide Rim's,LOT'S of Stainless,LOT'S of Alluminum,LOT'S of PowderCoating,NOTHING Stock..

    FASTEST Tri-Z on The Planet...MAKE A NOTE !! and the SECOND FASTEST, WRITE IT DOWN AGAIN!!!

  3. #3
    Join Date
    May 2003
    Location
    Houston, Texas
    --
    2,409
    Thanks Nathan...I did get the Z running. Probably alot of excess oil in the crank was making everything super rich.

    I suspect a bad oil side crank seal....and will change both sides. I'll probably take it to a shop.

    SEND ME PM HERE - CLICK HERE

    1986 ATC 250r, 1986 Tri Z, 1990 LT 500R "Quadzilla"


    Dirtbikes:

    1994 KTM 550 MXC (yes its a two stroke...66 hp stock!)
    1988 Yamaha DT

  4. #4
    Join Date
    Oct 2003
    Location
    Watertown, New York 13601
    --
    3,382
    Quote Originally Posted by 03 ORANGE SHEE
    yep, doing mine wednesday night
    left side , pull flywheel, remove stator, pry out with a screwdriver
    lube the new one up real good, use a deep socket to drive home
    right side. remove clutch cover, clutch basket, remove crank/waterpump gear
    then there is a +screw with a metal holding thingy holding the seal in behind the clutch basket,
    once out pry out with a screwdriver the seals are like $8 each


    if you dont get it going PART IT OUT!!!
    If you don't get your's going you should part it out.
    1985 YAMAHA TRI-Z 250 sold

    2006 YFZ 450

  5. #5
    Join Date
    May 2003
    Location
    Houston, Texas
    --
    2,409
    Nathan...ha ha!! I gotcha man....well we may see about that.

    SEND ME PM HERE - CLICK HERE

    1986 ATC 250r, 1986 Tri Z, 1990 LT 500R "Quadzilla"


    Dirtbikes:

    1994 KTM 550 MXC (yes its a two stroke...66 hp stock!)
    1988 Yamaha DT

  6. #6
    Join Date
    May 2003
    Location
    Houston, Texas
    --
    2,409
    Its going pretty damn good now. I will say that once this crank seal leak is fixed I have no doubt that my 86 Z (stock) is very very close if not equal to stock low hour 86 R in power....we will have to see when I get them side by side and can ride them back to back.

    A broad powerband (as found in the Z) can be deceiving!

    SEND ME PM HERE - CLICK HERE

    1986 ATC 250r, 1986 Tri Z, 1990 LT 500R "Quadzilla"


    Dirtbikes:

    1994 KTM 550 MXC (yes its a two stroke...66 hp stock!)
    1988 Yamaha DT

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