lb-in to ft-lb conversion ?
03-09-2003, 05:37 PM
#1
Pro
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lb-in to ft-lb conversion ?
My 81 shop manual lists valve coner torque as "45 lb-in" ...I don't have a torque wrench in "lb-in", so what is that in foot-pounds? Too small for my wrench? Using Edelbrock cast covers, so won't bend like tin, but I gotta know...tanks
03-10-2003, 07:50 AM
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Melting Slicks
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Re: lb-in to ft-lb conversion ? (Stevo81)
Just be careful using a lb-ft wrench on a lb-in bolt. The differences in calibration can be enough to make a difference. The lb-in wrench will be much more accurate at these low torques.
03-10-2003, 10:24 AM
#5
Melting Slicks
Re: lb-in to ft-lb conversion ? (Monkeywrench)
:iagree: :iagree: This is important. Several fasteners call for in-lb torque - a good torque wrench is in order.
03-10-2003, 10:34 AM
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Re: lb-in to ft-lb conversion ? (mapman)
I also agree that it would be better to use the inch pound torque wrench rather than the foot pound. Does anyone know of any sources for inch pound torque wrenches?
03-10-2003, 01:19 PM
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Re: lb-in to ft-lb conversion ? (john V. zemba)
If you buy a torque wrench try to get one where the settings you want aren't at the extreme ends of its calibration as they sometimes aren't very accurate eg. a friend stretched some head bolts so that they waisted badly. He was trying to set them to 22lbft with a wrench that had 20lbft as the lowest setting. The wrench worked perfectly for values of 30, 40, 50... but didn't want to know at 22! Out of interest I took my wrench to it & found that he'd gone over 80lbft on the bolts :( Since then I've never trusted the very low readings on the scale.
:cheers:
:cheers:
03-10-2003, 10:57 PM
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Re: lb-in to ft-lb conversion ? (VETMANIAC)
I also agree that it would be better to use the inch pound torque wrench rather than the foot pound. Does anyone know of any sources for inch pound torque wrenches?
You have a lot of choices. One of the best values is the Sears Craftsman #44593 - 3/8" drive micrometer 'click' type, measures 25 to 250 in. lb. in 1 in. lb. increments. Will run you about $70.
If you're willing to spend more look at models from Snap-On, MAC, S-K, Matco or PROTO. Quality costs, and most of these are in the $150 to $300 range depending on the specs. :cheers:
