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Thread: Blaster cranks

  1. #1
    Join Date
    Oct 2002
    Location
    Northeast
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    17,438

    Blaster cranks

    With all this talk about bad cranks I was just wondering, can the Blaster crank lower end bearing be rebuilt - split, replaced, trued etc.?? Or do you have to buy a new crank assm.?? What does a crank run??? :shock:
    All our government does is distract us while they steal from us, misspend our tax $ and ruin our country

  2. #2
    Tri-Z_Jim is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    Sep 2002
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    261

    Blaster lower end

    Its no different than any other 2 stroke air cooled motor.Blasters can be rebuilt and modified easily.My blaster crank case is all stock.I changed the piston/ring(OEM) in June and thier was hardly any wear on the stock piston.Just some carbon on it a from running a rich mixture.

    These are pics of a tri-z motor.It was left outside for a few months with no spark plug.This is the first time for me splitting a tri-z motor. Japanese 2 strokes motors are all basically the same.

  3. #3
    Join Date
    Sep 2002
    Location
    Detroit, MI
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    837
    That looks pretty complicated, but then again not. How hard was that to do jim?

  4. #4
    Lots_Of_Nothing's Avatar
    Lots_Of_Nothing is offline So bombed at TF I needed both hands to hold my beer Teaching quads a lesson
    Join Date
    Oct 2002
    Location
    Upstate NY
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    2,665
    looks almost exactly the same as my 84 250R, it's not hard at all if you have the right tools, and a manual
    Give me no lip and I tell you no lie.

    -TF 05' , And cant wait till 06!


  5. #5
    catfishwhisker is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Jul 2002
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    237
    I just replaced the crank on one a couple weeks ago. You can get a new rod kit for about $75. A local Yamaha shop wanted $50 to install it. You can buy a new crank for $150. Use your best judgement, but I went ahead and bought the new crank. The Blaster engine is nothing to work on. You might want to get a manual if you've never done it before, but trust me, it's nothing to it. Take your time, watch where everything goes, and you shouldn't have any problems. If you do, that's what we're here for. I'm sure everyone here would be glad to help.
    Still looking for an "original" TC dual plug head for a 200X!

  6. #6
    Tri-Z_Jim is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    Sep 2002
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    261

    manual

    I dont have manuals for any of my machines.I can reassemble anything I take apart.
    I took the motor out of the tri-z and opened it up in a little less than an hour....helps to have air tools. The allen head bolts are a pain in the trailprotrailprotrailprotrailprotrailpro that hold the cases together.I usually put small vice grips on each bolt as well as the allen wrench to keep from stripping the head out.
    If you never did it before you should buy a manual.

  7. #7
    Join Date
    Sep 2002
    Location
    Rittman, Ohio
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    6,276
    Hey Jim, bet I could put it back together blindfolded!

    On those allens, I went to autozone, and bought one thats in a 3/8" socket. Theyre a lot easier to remove with the ratchet!

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