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torque wrench settings

Discussion in 'Hangout Lounge' started by bensalf, Mar 28, 2014.

  1. bensalf

    bensalf Well-Known Member

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    so,
    I'm starting to rebuild my cylinder head back up after changing the exhaust valves, ( discovered 4 bent ones, after low compression test).
    the torque wrench setting for the camshaft bearing caps is 10Nm..?
    there seems to be very little force required to "click" my torque wrench at 10Nm, certainly a lot less than it was to undo them.
    10Nm is the same as the cam cover bolts, in the Haynes.
    does this seem right?
    cheers
    stu

    p.s. 10Nm =7.2ft-lb
     
  2. Polock

    Polock Well-Known Member

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    if you clamp the square drive in a vice and hang 7.2 lbs on the handle it should just click.
    most of them are made to be right at the middle of their range.
    it's better to check your wrench 5 times that to strip one bolt
    7.2 is the setting for most 6X1 bolts on these
     
  3. midnightmoose

    midnightmoose Member

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    I like to use a smaller 1/4" drive inch-lb torque wrench for lower specs. Just multiply by 12 to convert to inch-lb, which is 86.4.

    I feel like it's more accurate and less likely to break anything.
    Just my opinion...
     
  4. pmjydnl

    pmjydnl Member

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    Agree with this. I found out the hard way when rebuilding my Yamaha RD350LC. It happend with the second last bolt when torquing the upper and lower crankcase. No need to say that what was exclaimed....should not be printed here. Have bought a 1/4' drive for the smaller bolts.
     
  5. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    Yep; this is why you really need two torque wrenches to work on XJs.

    You need an inch-pound "micrometer" wrench for the 5.8ft/lb, 7.2 ft/lb and 11 ft/lb things; and a larger capacity wrench for the 20 ~30 up to 80 ft/lb items.
     
  6. bensalf

    bensalf Well-Known Member

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    yes,
    I have 2 torque wrenches.
    small one is 3/8 sq drive, which is Nm/ --In-lb
    large one is 1/2 sq drive, which is Nm/ --ft-lb
    I'm only using the little one for the engine, but I'm going to do as
    Pollock sugests, and test the wrench with some weights.
    cheers
    stu
     

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