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Crankshaft wobble - freshly rebuilt engine

Discussion in 'The Garage' started by CanadianSteve, Dec 10, 2019.

  1. MaxPete

    MaxPete Lucille, Betty & Demi - I suggest but THEY decide. XS650.com Supporter Top Contributor

    OK - I was intrigued so I looked the parts up on XS650 Direct (the CDN counterpart of MikesXS) and here is the verdict:
    • two big-end bearings = $90 (sounds like the line from the sub's chief engineer in Das Boot)
    • one drive-end ball bearing = $80.00
    • three crank roller bearings = $375.00
    TOTAL $545.00
    HST $ 71.00 (this is the 13% sales tax or Human Sexuality Tax as we sometimes call it up here)
    GRAND TOTAL $616.00

    Plus another other parts needed such crank pins etc., labour and the use of huge press to install the parts etc. etc. etc. I'd be surprised if you got away for under one large Canadian, if not two.

    Big End Bearing/Thrust Washer Set
    Big End Bearing/Thrust Washer Set - Each Kit Contains: 1Pc. #93310-62660
    Standard Needle Bearing + 2pc. of # 90209-26014 Thrust Washers, Made in Japan.
    Fits: All XS/TX 650's (1970-84) right or left side - (256 or 447 engines)
    Part #05-0011 $44.95 CAD Set (each bike has two of these)

    Crank Main Bearing
    Crank Main Bearing - Drive End - RH (Ball Type) - B6306C3 - Special. 1 Pc.
    used per engine. Made in Japan. OEM# 93306-30604-00-00.
    Fits: 1970-84 650's
    Replaces the Discontinued and long unavailable Koyo brand original Bearing.
    Part #05-0008 $79.95 CAD Ea (one required per bike)

    Crank Main Bearing
    Crank Main Bearing (Special Roller Type) - 3 used per engine. - Located center (2)
    and Left hand side of crankshaft (1). OEM# 93390-00003-00 - Made in Japan.
    Fits: All 1970-84 650's
    Part #05-0009 $124.95 CAD Ea (three required per bike)
    TwoManyXS1Bs and grizld1 like this.
  2. grizld1

    grizld1 Grumpy old man Top Contributor

    Ouch! Yep, those bearings are expensive, but at least they're genuine Koyo and still available. A few years ago the only XS650 bottom end bearings offered anywhere were Chinese repops, and my guess is that if those were very good Mike's XS would still be selling them. The bearings are costly because the outer race has to be drilled for pins and oil passages, so they're small batch items. Rod pins and big end bearings are included in the rod kits from Mike's and XS Direct, and if the coating isn't intact in the small ends you might consider new rods. They're excellent quality, Japanese made, with harder material than OE rods so they don't require the copper alloy coating that Yamaha used.

    Edit: Never let it be said that I don't give Mike's XS credit where credit is due. Good on 'em for making those Koyo bearings available again and offering better-than-OE rods!
    Last edited: Dec 18, 2019
  3. Ya that is definitely expensive but not entirely surprising.

    My mechanic brother-in-law has worked with Ontario Crank Services in Orillia, which is about the same distance from me as Wolfe Worx. Either way I'll be taking the crank to one of these two shops and will be expecting an expensive repair so time to work on plan B, which would be a replacement crank.

    I did have quite a bit of metal shavings in the oil and wonder if it was the shavings that killed the bearing, or if it was the strain on the engine caused by trying to start it with the camshaft flipped 180 degrees on the first reassembly. I hear strain on the engine can cause the inner bearings to fail so I can imagine this might have contributed to the failure.
    grizld1, gggGary and MaxPete like this.
  4. solo2racr

    solo2racr Suck, Squeeze, Bang, Blow

    :agree: "OUCH" is RIGHT!!!!!!!!!!
  5. hooser

    hooser XS650 Addict

    Let me look tomorrow, i may have a good crank, if i do and the bearings and rods are good, I will let you know, Gary
    Paul Sutton, grizld1, gggGary and 4 others like this.
  6. hooser

    hooser XS650 Addict

    I looked at 4 of them today, rods were good on one but the 2 inner bearings were shot. Not sure how big of a hurry, probably cold in Canada, i have a couple more motors to open up in next week of 2, If you want to email me at gary@hoosracing.com i will let you know. Also i was thinking $100 plus shipping. Gary
    88_pony, grizld1, Paul Sutton and 4 others like this.
  7. Thank you for that Gary. You are right the weather here isn’t great so I have a few months to get everything sorted and put back together.

    The crank shop I’m using is shut down for the holidays so I’ll be taking mine there in early January when they reopen. If it has more than one bad bearing I’ll likely take you up on your offer. Will email you when I figure out my next steps. Thanks again everyone. Merry Christmas!
    MaxPete, hooser and gggGary like this.
  8. Hey everyone just wanted to let you know I’ve bought a crank from Gary and it’s is in transit right now. Time to start prepping for reassembly.
  9. Paul Sutton

    Paul Sutton Buckhorns on XV1000SE Top Contributor

    Will you be checking the crank for allignment and having it welded before installing???
    MaxPete and lakeview like this.
  10. Hey Paul, the crank was aligned by Gary but has not been welded.
    MaxPete, gggGary and Paul Sutton like this.
  11. hooser

    hooser XS650 Addict

    Here is how I learned to take a crankshaft apart, Roger Johnson who taught me has been doing these since 1972, he told me never go over 10 ton, Probably why he still has the same press all these years. It pays to have a good press so you can press everything straight.The only difference in his press and mine is , his floor model and my is table top. Making sure pin are at 90 degree with flywheels is very important as well as the press ram . Step 1 and 2 should always be followed. And only press pin out of one flywheel at a time never push through both. I did not add removing bearings etc, Hope this helps someone. Step 1.jpg Step 2.jpg Step 3.jpg step 4.jpg step 5.jpg
  12. gggGary

    gggGary Stop that! XS650.com Supporter Top Contributor

    Paul Sutton, MaxPete and Jim like this.
  13. kshansen

    kshansen XS650 Junkie Top Contributor

    That's the same OTC press we had at the shop where I worked, off-road equipment not Yamaha! Our's was a bench model that the shop's welder made a floor stand for out of six inch pipe and some steel plate.
    MaxPete, Paul Sutton, Jim and 2 others like this.
  14. Well this Covid situation has given me time to get the engine back together.

    Big thank you to everyone here for your input and support. Also huge thank you to the experts for all of their input through the years that I could search on this forum.

    Still waiting for a drive chain and clutch cable before I can take it for a rip but I’m pretty happy!!!

  15. Tiesco

    Tiesco XS650 Addict

    Out of curiosity, how much did this all cost?
    gggGary likes this.
  16. Oh man I’ve lost track but if I were guessing:

    -2 years
    -200 hours
    -12 favours from close skilled friends (welders, mechanics and extra hands for engine lifting), still to be repaid
    -My sanity

    But in all honesty I’m still loving it and can’t wait to start riding again. It’s been a frustrating build but it’s unbelievable what I’ve learned during the process.

    Once again, I can’t say thank you enough to people like 5Twins, gggGary, Xsleo, Mailman, Jim, Grizld1, MaxPete, Hooser ...and many many more.

    thx gentlemen.
    timbeck, 88_pony, gggGary and 7 others like this.
  17. MaxPete

    MaxPete Lucille, Betty & Demi - I suggest but THEY decide. XS650.com Supporter Top Contributor

    Good stuff Steve - the bike sounds great!

    Now...for some decent weather in southern Ontario!

    gggGary, 2XSive, Jim and 1 other person like this.
  18. hooser

    hooser XS650 Addict

    Sound good Steve, well done!
  19. 88_pony

    88_pony XS650 Member

    This was a great read for a Saturday afternoon! Such an awesome community and amazing that it worked out in the end!

    Cheers for a great thread!
  20. Superjet

    Superjet XS650 Junkie Top Contributor

    Sounds great Steve glad you got it sorted out! JC
    CanadianSteve likes this.

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