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Left rear motor mount bolt...

Discussion in 'Motorcycle Tech Talk' started by Tommyc, Sep 13, 2011.

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  1. Tommyc

    Tommyc Active Member

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    I met John Sachs yesterday. He is going to modify my carbie, manifold and my new STD heads. Nice guy. He's gonna bore the carb and add a thunderjet valve. He's gonna clean up the manifold and add external oil lines to the heads.

    Do you know if an o-ring manifold work with band style heads?
    Tommyc, Sep 20, 2011
    #61
  3. hotroadking

    hotroadking Super Moderator Staff Member

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    I don't know about that fit, John should know.

    Yeah he's a great guy and does very good work
    hotroadking, Sep 20, 2011
    #62
  4. Tommyc

    Tommyc Active Member

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    My head bolts are old, should I replace them or no? Do they go bad?
    Tommyc, Sep 20, 2011
    #63
  5. cardboard

    cardboard Well-Known Member

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    If you took them off
    Why
    If I took them off I would replace em cause they stretch
    But if they are on the bike and everything is o.k
    I would leave them along
    If you pulled them and are reusing them
    Make sure you oil em so they torque down good
    cardboard, Sep 20, 2011
    #64
  6. Tommyc

    Tommyc Active Member

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    thanks
    Tommyc, Sep 20, 2011
    #65
  7. hotroadking

    hotroadking Super Moderator Staff Member

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    If they are original, and have been on and off several times you might want to consider replacing them, they take a ton of TQ to get set right and you really don't want leaky heads, enough stuff leaks on Shovels you don't want to assist it if you don't have too.
    hotroadking, Sep 20, 2011
    #66
  8. Tommyc

    Tommyc Active Member

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    Whaaaat, Shovels leak, really? Nooooooooooo..... Say it isn't so!
    Tommyc, Sep 20, 2011
    #67
  9. hotroadking

    hotroadking Super Moderator Staff Member

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    Only when they are not out of oil... LOL

    Got a friend with a 113 El Crudo Motor.
    been a POS for 5 years....

    It's name is Valdez....
    hotroadking, Sep 20, 2011
    #68
  10. chucktx

    chucktx Moderator Staff Member

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    change em..........
    chucktx, Sep 20, 2011
    #69
  11. Tommyc

    Tommyc Active Member

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    I will, thanks. I guess it's worth the $55 to not have leaky heads.
    Tommyc, Sep 20, 2011
    #70
  12. hotroadking

    hotroadking Super Moderator Staff Member

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    It's worth the $55 to not have to do it again, and buy all new gaskets, and take the whole bike apart again...

    dad had a saying

    Do it right
    Do it now
    Do it Right now
    hotroadking, Sep 20, 2011
    #71
  13. Tommyc

    Tommyc Active Member

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    I'll have to agree with that saying!
    I always try to do it right!
    That's why I'm asking the questions now.
    Thanks!
    Tommyc, Sep 20, 2011
    #72
  14. cardboard

    cardboard Well-Known Member

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    Replace the studs too
    cardboard, Sep 20, 2011
    #73
  15. Tommyc

    Tommyc Active Member

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    okay, studs too.
    Question: If I split the cases apart does the crank assembly just lift out? Is it pressed in or just the bearings are. The problem is the oil passages in the crank case have been welded up and need to be drilled out again. What a pain in the keister!
    Tommyc, Sep 20, 2011
    #74
  16. cardboard

    cardboard Well-Known Member

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    Do you know you use red locktite to hold yhe studs to the engine cases
    cardboard, Sep 20, 2011
    #75
  17. Tommyc

    Tommyc Active Member

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    I do now, thanks.
    Tommyc, Sep 20, 2011
    #76
  18. hotroadking

    hotroadking Super Moderator Staff Member

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    why do you want to split the cases, is there a problem
    that needs addressing or are you going to do some
    upgrade/maintenance to keep it fresh.

    If theres nothing wrong leave it alone. JMO

    However I believe you'll need to press things together
    and you'll need a press to get the old bearings
    out, and new ones in, plus you'll need to setup endplay clearance
    etc. yamabond is the best stuff to seal the cases (yeah yapanese)

    Talk with John about going through the bottom end if you think it needs
    it... He's got the tools, specs and will be setting up the clearances...
    hotroadking, Sep 20, 2011
    #77
  19. Tommyc

    Tommyc Active Member

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    The oil passages in the cases are sealed up, the old heads had external oil lines going back to the oil pump. The new heads don't have that. The only solution I know of is to redrill out the oil passages into the crankcase. Therefore they need it come apart.
    The crank just lifts out, right? or does the pinion gear need to be pulled off first?
    Tommyc, Sep 20, 2011
    #78
  20. cardboard

    cardboard Well-Known Member

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    Oh Geesus !

    Let me ask you something, before you go threw all this, you ever thought about using somebody that is really good in the business or buying a New engine.
    These folks are great on old engines.

    Accurate Engineering
    cardboard, Sep 20, 2011
    #79
  21. Tommyc

    Tommyc Active Member

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    Thanks but I'd rather learn by doing the work myself.
    I'm trying to figure out the best way to go about solving the problem.
    Tommyc, Sep 20, 2011
    #80
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