1. 2 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     WR = 2st Enduro & CR = 2st Cross

125-200cc Truing crank on cr165 rebuild

Discussion in '2 Stroke' started by Pedec, Dec 29, 2013.

  1. Pedec Husqvarna
    Pro Class

    Location:
    Sask.Canada
    I have a local friend that is rebuilding my motor after connecting rod went he is a local shops mechanic . He is having a hard time to get crank true. His dad owns local machine shop and was helping and still can not get it within spec. He said old rod came of crank easy and went on easy also. I am not a mechanic but is there any special way to do it or tools needed so I can get him to read this post. Greg is afraid if I send it away to get trued it could get untrued in shipping. Thanks for any help.
    Pedec, Dec 29, 2013
    #1

  2. 2premo Husqvarna
    Pro Class

    Location:
    Northern NV
    Husqvarna Motorcycle:
    98 WR360, 1987 WR430, 1988 XC430
    Other Motorcycles:
    Sherco 300, 2002 KTM 380EXC
    laugh if you will but I held mine in my hand, smacked it with a lead mallet and mounted it back in the lathe to check run-out
    2premo, Dec 29, 2013
    #2
    troy deck and juicypips like this.

  3. juicypips Husqvarna
    Pro Class

    Location:
    gloucestershire
    Husqvarna Motorcycle:
    wr 360. 2002
    Other Motorcycles:
    Gas Gas TxT 300, Yamaha wr250f
    i was going to suggest run out guage an rubber mallet in lathe but thought i may sound stupid
    juicypips, Dec 29, 2013
    #3
    2premo likes this.

  4. 2premo Husqvarna
    Pro Class

    Location:
    Northern NV
    Husqvarna Motorcycle:
    98 WR360, 1987 WR430, 1988 XC430
    Other Motorcycles:
    Sherco 300, 2002 KTM 380EXC
    ;)
    2premo, Dec 29, 2013
    #4

  5. Dirtdame Administrator

    Location:
    Rock Springs Wy
    Husqvarna Motorcycle:
    11 WR300,13 WR125,18 FE501
    Other Motorcycles:
    17 Beta Xtrainer
    I send my crank assemblies to a guy that has a crank jig. They come back true every time. When I used to do the work myself, I would mark the crank before I took it apart, so I had line up marks to help get it close, then used a lead mallet to smack it with. I don't have the patience for that kind of stuff anymore, so I just pay somebody with the right tools to do it, these days.
    Dirtdame, Dec 29, 2013
    #5
    Norman Foley, wallybean, 2premo and 1 other person like this.

  6. Pedec Husqvarna
    Pro Class

    Location:
    Sask.Canada
    They are using run out gauge and lathe. What are the tolerances just to double check.
    Pedec, Dec 29, 2013
    #6

  7. Dirtdame Administrator

    Location:
    Rock Springs Wy
    Husqvarna Motorcycle:
    11 WR300,13 WR125,18 FE501
    Other Motorcycles:
    17 Beta Xtrainer
    All cranks should be a half thousandth or less of runout. You'd be surprised at how much vibration you will get at one and half. I know!
    Dirtdame, Dec 29, 2013
    #7
    ray_ray likes this.

  8. Kreza Husqvarna
    AA Class

    Location:
    Ballarat, Australia
    Husqvarna Motorcycle:
    2010 TE 450
    Other Motorcycles:
    1998 KX80 2013 TM85
    If you are supporting it between centres then check the condition of the centre holes. May have been damaged when disassembled. If you can support it in a vee block type fixture and support the crank right where the bearings mount you may find a different reading. When in an engine a crankshaft rotates on bearings, not on centres.
    Kreza, Dec 29, 2013
    #8
    ray_ray likes this.

  9. Dirtdame Administrator

    Location:
    Rock Springs Wy
    Husqvarna Motorcycle:
    11 WR300,13 WR125,18 FE501
    Other Motorcycles:
    17 Beta Xtrainer
    I like to use a knife edge bearing stand.:thumbsup:
    [IMG]
    Dirtdame, Dec 29, 2013
    #9
    juicypips and Idacurt like this.

  10. Kreza Husqvarna
    AA Class

    Location:
    Ballarat, Australia
    Husqvarna Motorcycle:
    2010 TE 450
    Other Motorcycles:
    1998 KX80 2013 TM85
    Perfect Dirtdame, Pedec should be right now
    Kreza, Dec 30, 2013
    #10

  11. Pedec Husqvarna
    Pro Class

    Location:
    Sask.Canada
    We got it within spec, motor is going back together. Thanks for help.
    Pedec, Dec 30, 2013
    #11
    woodsrider and 454x like this.