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inch lbs. = foot lbs. question

Discussion in 'The Hokey Ass Message Board' started by 41woodie, Jan 25, 2008.

  1. 41woodie
    Joined: Mar 3, 2004
    Posts: 1,143

    41woodie
    Member

    The torque wrench I have measures ft./lbs. I need to tighten something to an inch/lbs setting. Is there a conversion between the two? My guess would be that 60 inch/lbs would equal 5 foot/lbs of torque but just dividing 60 by 12, but it's only a guess.
     
  2. D.W.
    Joined: Jun 5, 2004
    Posts: 2,070

    D.W.
    Member
    from Austin Tx.

  3. noboD
    Joined: Jan 29, 2004
    Posts: 8,868

    noboD
    Member

    Yes, divide by 12. I would not use a ft.lb. torque wrench for that low of a setting. If you are really talking about 5 ft.lbs., that's hardly hand tight.
     
  4. 41woodie
    Joined: Mar 3, 2004
    Posts: 1,143

    41woodie
    Member

    Well if I'm using the conversion table correctly it shows 60 inch lbs. = 3.125 ft. lbs. That doesn't make sense, but I always hated algebra because they weren't interested in the answer they wanted to know how you solved the problem.
     
  5. FiddyFour
    Joined: Dec 31, 2004
    Posts: 9,024

    FiddyFour
    Member

    that conversion page kicks ass... thanks D.W.
     
  6. blown49
    Joined: Jul 25, 2004
    Posts: 2,212

    blown49
    Member Emeritus

    Blower on my Merc had to be torqued to 14 in#. If it's critical spend the money for the in# wrench you'll prolly be glad you did.
     
  7. Mr. Creosote
    Joined: Feb 27, 2006
    Posts: 275

    Mr. Creosote
    Member

    Your correct. 12 inch pounds in a foot pound... Most foot pound torque wrenches start off at 20. And are most accurate in the middle of their range, least accurate at the top and bottom of their range. Does anyone know a link to a table for average torque specs for most bolts?
     
  8. V4
    Joined: Feb 14, 2007
    Posts: 146

    V4
    Member

  9. Ebbsspeed
    Joined: Nov 11, 2005
    Posts: 6,441

    Ebbsspeed
    ALLIANCE MEMBER

    Shows 5 Ft./lbs when I use it.
     

  10. I second this...

    You'll probably spend more fixing what you broke than what you would on a new torque wrench. ask me how I know this...:mad:
     
  11. Jalopy Jim
    Joined: Aug 3, 2005
    Posts: 1,867

    Jalopy Jim
    Member

    I have been working for the past 2 days fixing someone else mistake: NOT using an inch pound torque wrench on a Camery aluminum head.
    Had to make a steel plate to fit the top of the Toyota head, use a magnetic base drill, and drill out the broken bolt, only to find out today two other bolts were over torqued and the thread will not hold 168inch pounds.
    So they have to be drill to 8mm bolts and taped.

    Save yourself some time and money and get an inch pound torque wrench.

    Jim H
     
  12. HotRodChassis
    Joined: Jan 23, 2005
    Posts: 2,282

    HotRodChassis
    Alliance Vendor

    I'll second what Jalopy Jim and the other are suggesting. Buy the right, quality tool. A cheap torque wrench will give you inaccurate torque values, and more work later. You get what you pay for.
     
  13. Digger_Dave
    Joined: Apr 10, 2001
    Posts: 2,516

    Digger_Dave
    Member Emeritus

    A THIRD from me!
    When I was working on some electronic gear; the fastener torque values were ALL in INCH POUNDS.

    After screwing up a couple of - expensive - assemblies; I invested in a GOOD INCH POUND wrench.
    (you would be surprised how much torque a HAMB :D (sic!) handed person can apply!!)

    One word of advise; if it will be used a lot, have it re-calibrated each year to insure accuracy.
     
  14. 41woodie
    Joined: Mar 3, 2004
    Posts: 1,143

    41woodie
    Member

    Well I already own a snap-on "click" when it's at the right spot ft./lbs wrench. Guess I'll see if they have one for inch/lbs. I've found that using the very best tools and the most expensive parts usually help offset my lack of knowledge and talent.
     
  15. Mustang65
    Joined: Jan 16, 2008
    Posts: 19

    Mustang65
    Member

    Just tighten her down snug then give another turn....That's how we did it on the farm
     
  16. Sour Kraut
    Joined: Jun 17, 2007
    Posts: 72

    Sour Kraut
    Member

    You mention drilling and taping to 8mm, if the original bolt was a 6mmx1.0 the correct torque is 89lbs./in. not 168. You may have an incorrect spec.
    The correct torque for an 8mmx1.25 bolt will be 18lbs./ft. or 216lbs./in. That is assuming grade 8.8 bolts are used.
    If you need to repair a threaded hole, use a Helicoil insert. They work excellent if used correctly.
     
  17. TudorJeff
    Joined: Feb 13, 2007
    Posts: 1,132

    TudorJeff
    Member

    First off, the people who are suggesting to spend the money on a good torque wrench with a range made for the torque you are targeting are offering great advice.

    Secondly, if you need to convert things, one of the best ways is to go straight to Google and just type it in like so "convert 60 inch pounds to foot pounds". Google will give you the answer plus it will work for all kings of conversions.
     

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