Torque specs in lb in??
Thread Starter
Safety Car
Joined: Mar 2015
Posts: 3,638
Likes: 245
Torque specs in lb in??
So i am currently reinstalling the heads on my ls1 and i haven't used the torque wrench in 5 + years. As i am reading the repair guide for some tq specs i noticed some are "LB IN" not "LB FT"
When did they start doing this and now i have to convert everything into ftlbs.
Thank goodness i was not sleepy before i started to tq the air bleed to 106 ftlbs instead of 8ftlbs
When did they start doing this and now i have to convert everything into ftlbs.
Thank goodness i was not sleepy before i started to tq the air bleed to 106 ftlbs instead of 8ftlbs
Team Owner
Joined: Nov 2001
Posts: 45,000
Likes: 585
So i am currently reinstalling the heads on my ls1 and i haven't used the torque wrench in 5 + years. As i am reading the repair guide for some tq specs i noticed some are "LB IN" not "LB FT"
When did they start doing this and now i have to convert everything into ftlbs.
Thank goodness i was not sleepy before i started to tq the air bleed to 106 ftlbs instead of 8ftlbs
When did they start doing this and now i have to convert everything into ftlbs.
Thank goodness i was not sleepy before i started to tq the air bleed to 106 ftlbs instead of 8ftlbs
Thread Starter
Safety Car
Joined: Mar 2015
Posts: 3,638
Likes: 245
I dont think i can find a tq wrench at a store right now which is what i need, so I'm using the calculator site
https://www.thecalculatorsite.com/co...oot-pounds.php
For the help.
Team Owner
Joined: Nov 2001
Posts: 45,000
Likes: 585
I always use exact torque on things like valve bodies in an automatic. Too much risk in leaks in the valve body or stripping threads out of the casting. In most cases, you are right. It doesn't matter.
Thread Starter
Safety Car
Joined: Mar 2015
Posts: 3,638
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I even brought the need point tq wrench out
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
A couple of years ago, I bought an inch-pound torque wrench from Amazon. IIRC, the brand name was "TACKLIFE" and I paid about $30 for it.. It works great and accuracy is within 2% even though the advertised spec is 4%. It's a 1/4" drive but it came with 3/8" adapters. If you do want to follow the manufacturer's specs for torquing nuts and bolts, it may be worth buying an inch-pound torque wrench.
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Team Owner
Joined: May 2001
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From: Western NY
For anybody that's really interested, keep in mind that "just doing the mathematic conversion", and using your Ft/Lb torque wrench, may give you problems....Many of the 1/2" drive, Ft/Lb torque wrenches, begin their scales at 20 Ft/lbs, which is a higher value than the 80-120 In/Lbs that a lot of the smaller fasteners get torqued to.
Burning Brakes
Joined: Feb 2019
Posts: 1,028
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From: SW Ohio
Scoop up a 1/4 drive torque wrench for $10-20 and keep it on hand. Although I find myself not trusting it for some reason! I am a snug up by feel kind of guy on small fasteners, which is completely the wrong answer.
Tech Contributor
Joined: Dec 1999
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From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
For anybody that's really interested, keep in mind that "just doing the mathematic conversion", and using your Ft/Lb torque wrench, may give you problems....Many of the 1/2" drive, Ft/Lb torque wrenches, begin their scales at 20 Ft/lbs, which is a higher value than the 80-120 In/Lbs that a lot of the smaller fasteners get torqued to.
LOL! I promised my self that I would read ALL of the replies before I jumped in. leadfoot4 Nailed it. You should use the proper torque wrench for the torque value that you need. If you have a 10-150 FT/LB ~ LB/FT torque wrench,, Don't try to use it to torque a 106 IN/LB ~ LB/FT fastener!! The 10-150 torque wrench is most accurate in its mid range scale. Find a good inch pound wrench. You know Autozone and most Advance parts stores rent for free very good torque wrenches,, correct?? Rent it and when you bring it back, you get a refund. FREEEEE! Free Freee Free Freee……...
I have a good 3/8 drive inch pound torque wrench, a good 10-120 Ft/Lb and a good 50-250 ft/lb torque wrench. Each one has its place and a specific torque job.
I was raised calling it Foot/Pounds & Inch Pounds. Pound/Feet, Pound Inches feels out of place but, what ever..
Team Owner
Joined: May 2001
Posts: 87,334
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From: Western NY
FWIW, I have 4 torque wrenches, to cover the entire spectrum of fastener tightening. From a 3/8" drive, In/Lb wrench, for the "small stuff", to a 1/2" drive, 300 Ft/Lb wrench, to handle the LS engine's harmonic balancer bolt.