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Thread: Flushing crank?

  1. #1
    Join Date
    Nov 2003
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    Flushing crank?

    Ok, have any of you tried flushing a crank? I have some little pieces of metal in my crank (this is a 2 stroke). From where, I have no idea. Its not from the piston of top end. I don't wanna split the cases, because I will more than likely cause more damage trying to get the damn thing apart. Do think its possible?
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  2. #2
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    You'll be able to " Assume " you have most of it out using compressed air or magnets on a rope.. but only true way to do it would be to split i guess....

    was it run like that ?
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  3. #3
    Join Date
    Jun 2004
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    dude! your crank bearings are probly shot and the races are spinning in the cases!!! it might be too late to save it....you HAVE to split the cases and check it out or it will seized, blow up, or throw a rod or all of the above....when you try to pick the pieces up with a magnet if they can be picked up that isnt too bad, you might just need to rebuild your crank and put new main bearings in, if you cant pick the pieces up you more than likely need new case halves....idk, my 2c.
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  4. #4
    Join Date
    May 2005
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    you need to split the cases to find out where the metal has come from. It may have come from somewhere that is going to drop more rubbish in there as soon as you clean it out. you will need to strip it right down and clean all of it spotlessly as the smallest pieces of metal cause the most damage as they are the ones that can travel easiest

    will
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  5. #5
    Join Date
    May 2002
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    Ya I agree with these guys, you should split the cases. All it takes is one sliver to screw up your bearings.

  6. #6
    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
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    If you just wanna do a redneck job, then with the bottom end still together, dump some gas in the crank area and rotate the crank a few times, dump it out, repeat.
    Give me no lip and I tell you no lie.

    -TF 05' , And cant wait till 06!


  7. #7
    Join Date
    Nov 2003
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    Ok, I flushed it out, and 6, chunks of metal came out. I can see why my crank wasn't spinning,lol. Now I need to find out where they came from. Thanks for the help. I know I should split the cases, but I am too lazy and broke to split cases at the moment lol. It spins good now, and it should be alright.
    "I am going out of this world.....the same way I came in...screaming and covered in blood."

  8. #8
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    A ticking time bomb....BOOM!!!

  9. #9
    Join Date
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    Quote Originally Posted by chrisr200x
    A ticking time bomb....BOOM!!!
    Exactly, just because it's spinning doesn't mean it's right. Admitting a move like this is like asking people that know better to never buy a machine from you.

  10. #10
    Join Date
    Nov 2003
    Location
    Houston,Texas
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    I checked out the metal pieces, and they are not aluminum, so it can't be from the cases.They couldn't be from a gear, becuase the crank is sealed from the gearbox. I dunno, I will probably have someone at a shop split my cases.
    "I am going out of this world.....the same way I came in...screaming and covered in blood."

  11. #11
    Join Date
    Dec 2004
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    eeh, it's better to pay a little now than alot later.

  12. #12
    Join Date
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    Quote Originally Posted by chrisr200x
    eeh, it's better to pay a little now than alot later.
    definitely a good idea.
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  13. #13
    Join Date
    Jun 2004
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    its either your crank bearings and/or rod and wristpin bearings....she will either throw something out the bottom of the motor or sieze.....good luck...if something goes you are talking big$ to fix it cause it will destroy your top end/bore job, crank assembly and possibly cases if its bad enough....
    1985 Honda ATC250R drag trike with s/t kit and full drag CR hybrid motor and drag chassis...
    1986 Honda ATC250R daily rider fully modded engine, +4 swinger,etc...
    1997 Polaris Storm 800 triple, boyesen reeds, dg individual silencers, 240 studs, 123mph on radar...

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