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Thread: yz 250 swingarm bolt problem

  1. 07-25-2010, 09:26 PM #1
    Mr.Atc's Avatar
    Mr.Atc
    Mr.Atc is offline At The Back Of The Pack Arm chair racerFirst time rider
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    yz 250 swingarm bolt problem

    im restoring a 1981 yz 250 this thing hauled ut the engine is wore out and the frame needs painting but it just so happns that the swingarm bolt wont come out i tried heating it and spinning it with the impact and hitting it the only thing i havent tried is putting a punch in the center of the bolt since it is hollow and using a sledge i dont want to ruin the bolt though i dont know if i can get a new one....any ideas im pretty much screwed if i cant get this bolt out i really need your help on this one guys!!!
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  2. 07-26-2010, 10:13 AM #2
    Yamahondaman's Avatar
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    Yamahondaman is offline R.I.P. Hey Ron Racing-GIT IT RAG! Got the holeshot
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    AH MAN !!!! back 6 year's ago i had one but it is at a buddy's house .. i'll go today and see if he still has it .. also i Milled and Turned the Jug to fit on the ATC Bottom End.. look's like a MUGEN Cyl. !! i'll HOLLAR Tommorrow
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  3. 07-26-2010, 02:59 PM #3
    oldskool83
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    lots of PB blaster, wait a day or 2, then get a big . prob the bearings are rusted to the bolt. happened to a 85 rm125 i had once...6 hours to get it out. lots of heat, some one on here makes new pivot bolts for trikes so i dunno why they couldnt make a new one for a dirtbike. i bet all the grease is gone in it also.
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  4. 07-26-2010, 03:57 PM #4
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    Quote Originally Posted by oldskool83 View Post
    some one on here makes new pivot bolts for trikes so i dunno why they couldnt make a new one for a dirtbike.
    I made several of them ... Stainless .. but i need one to copy
    "07" DR650 Suzuki Dual Sport
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  5. 07-29-2010, 06:36 PM #5
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    3wheelmecca
    3wheelmecca is offline Just Too Addicted Arm chair racerJust too addicted
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    All YZs Ive ever owned had that problem. If you pull the shock and such, tie the swinger to the top of the subframe, then throw some heat at the bearings , put in a punch, and tap like hell. It has worked for me on my De-Carbon and Mono Cross systems.
    You will cry, you will scream if you've heard half the **** I've seen.
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  6. 08-12-2010, 05:47 PM #6
    dirtjunkie85
    dirtjunkie85 is offline At The Back Of The Pack Arm chair racerFirst time rider
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    Yeah i would'nt be afraid to use some force. just PB blast the heck out of it and let it sit must make sure the punch you use doesnt mar up the threads and such and i dont think you will have a big problem. I agree that the bearings are probably frozen to the bolt. I wouldnt worry too much about finding the bolt again. I would check with Bikebandit.com and see if they have one. they carry alot of OEM stuff.
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