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Thread: Should I buy a new crankshaft or have it repaired?

  1. #1
    Baby Twin
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    Should I buy a new crankshaft or have it repaired?

    I spun a rod bearing in my tl1000r and am trying to decide if I should have it repaired or to replace it. I have talked to a couple machine shops that say they can repair it, one shop says they will weld and turn it for a resonable price but a long turn around time. The other shop says they will grind it if I can find different bearings. I am wondering what thoughts are on this one? Anyone done either repair? Anyone know where to get the appropriate bearings?

  2. #2
    MotoGP Pit Boss gaztl1000r's Avatar
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    have a look at this thread
    it looks like this was milled down with larger bearings installed
    Surprise!

    i'd go for the other option if you can't find a good crank
    Who's fkin happy??.?? not me said snow white.WP rear damper gsxr k4/5 forks with gold calipers ,blackshadow discs,soon to be a hid/projector headlight,Harris adjustable rearsets,,pc2 k&n, zero limits seat hump,folding levers,mattyj clear clutch cover,rifleman 1/5th insert,more to come ..........

  3. #3
    AMA Pit Boss TLR Tim's Avatar
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    Ide pm Sam and buy a 1080 bigbore kit
    1999 TL1000R , Full Yoshimura RS3 Stainless , yoshi paddock stand bobbins , yoshi oil filler cap , gsxr k5 forks , gsxr k7 front fender ,black tokico calipers , pazzo copy levers ,K&N , Goodridge braided hoses , ebc discs ebc HH sintered pads , Renthal R4 SRS chain & sprocket , fan switch mod , gp mod, tre , tinted screen , Barnett clutch springs.

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  4. #4
    MotoGP Pit Boss gaztl1000r's Avatar
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    nogood puttin a 1080 on a fekked crank though
    so send the 1080 to me and i'll fek my own crank
    lol
    Who's fkin happy??.?? not me said snow white.WP rear damper gsxr k4/5 forks with gold calipers ,blackshadow discs,soon to be a hid/projector headlight,Harris adjustable rearsets,,pc2 k&n, zero limits seat hump,folding levers,mattyj clear clutch cover,rifleman 1/5th insert,more to come ..........

  5. #5
    Silver Subscriber The Ring-In's Avatar
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    This was on the zone before the crash.

    its still on the planet here

    http://www.tlplanet.com/forums/showt...ghlight=cranks

    this motor is still running strong and has done track days too.
    Last edited by SnailsPace; 03-24-2011 at 04:35 PM.

  6. #6
    MotoGP Pit Boss gaztl1000r's Avatar
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    sounds like some top qc in the suzuki supply chain somewhere
    is it specific to any particular model year? or accross the production run?
    Who's fkin happy??.?? not me said snow white.WP rear damper gsxr k4/5 forks with gold calipers ,blackshadow discs,soon to be a hid/projector headlight,Harris adjustable rearsets,,pc2 k&n, zero limits seat hump,folding levers,mattyj clear clutch cover,rifleman 1/5th insert,more to come ..........

  7. #7
    AMA Pit Boss doug's Avatar
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    would depend on how far undersized the crank has to go to clean it up if its more than a few thou its weld time or get a different crank. There is another thread with the cracked crank but it looks like it was ground way undersize and past the case hardening so it broke.

  8. #8
    Silver Subscriber The Ring-In's Avatar
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    the cracked crank but it looks like it was ground way undersize and past the case hardening so it broke.
    common mis-interpretation of function.

    if the crank loses hardness it will wear and appear to have "spun a bearing"

    broken cranks are most commonly caused by cracks.

    cracks are most commonly caused by the pounding of the loose rod and bearing assembly.

    really all reground cranks should be crack tested before re-use.

    equally they should be hardness tested and where the hard area has been removed they should be re-hardened.

  9. #9
    GP Champ Loki-TLR's Avatar
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    I believe there where three things that led to the breaking of the crank on my S, not only the downsizing..
    The coolest car alarm tester by far - TL1000S - Reverse engineering the TL since 2003 - TLzone

  10. #10
    Baby Twin
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    I recently had to fix the big ends. There was nothing left of the caps and the crank pin started to make grooves.
    I had the crankpin ground down less than 2 th, and they fitted BMW car bearings in the conrods after slightly taking away the inside of the conrods to fit the new bearings. The closest Suzuki bearing is 44.976 and the BMW bearing starts at 44.975.

    Its broken in and still rides smoothly

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