150 ft lb on u-joint bolt?
Thread Starter
Melting Slicks
Joined: May 2001
Posts: 2,749
Likes: 776
From: Dadeville AL
150 ft lb on u-joint bolt?
My Cobra replica has suspension from a 1987 Corvette. My Corvette auto repair book says the small (8 mm) bolts that secure the u-joint retaining straps should be torqued to 150 foot-pounds. I have yet to find an 8 mm socket capable of withstanding 150 foot-pounds. Can anyone verify the torque specification on these bolts? Thanks.
Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
They require much less. The large nut that is in the center of the rotor requires 150-175 ft lbs. Is it possible you mis read? I normally tighten the u bolt bolts with a small wrench till it hurts my hand a bit. Probably only 5-10 ft lbs with some blue(med) locktite added.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
You're going to need a longer lever to it get that tight. My Helms says the pinion nut gets torqued to 200-220 ft.lbs. The straps for the half shafts, 22-30 ft.lbs. And the straps to the pinion yoke, 14-20 ft.lbs. 150 IN.lbs equals about 12.5 ft.lbs. Did you read it correctly?
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Safety Car
Joined: Dec 2004
Posts: 4,088
Likes: 0
From: Poop land
Originally Posted by CFI-EFI
You're going to need a longer lever to it get that tight. My Helms says the pinion nut gets torqued to 200-220 ft.lbs. The straps for the half shafts, 22-30 ft.lbs. And the straps to the pinion yoke, 14-20 ft.lbs. 150 IN.lbs equals about 12.5 ft.lbs. Did you read it correctly?
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RACE ON!!!
P.S. They also use that special unit of measure to brag about the torque of mostly stock Honda econoboxes.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by 65Z01
:igree:
My '88 GM Shop Manual calls for 18 lbs-ft on the nuts holding the U-joint bearing caps on the propeller shaft.
My '88 GM Shop Manual calls for 18 lbs-ft on the nuts holding the U-joint bearing caps on the propeller shaft.
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PS. Some Dana yokes have drilled (not tapped) holes in the yoke to take a u bolt. The u bolts have nuts. Is that how yours is set up?
Last edited by CFI-EFI; Feb 21, 2005 at 08:30 PM. Reason: PA. After thought
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Melting Slicks
Joined: Dec 2004
Posts: 2,137
Likes: 5
From: Howard PA
Here's something handy to have.
http://chiphead6.homestead.com/files...onversions.htm
Right click "save target as" if you want to save it. I find it more convenient sometimes to just have it on the old PC.
http://chiphead6.homestead.com/files...onversions.htm
Right click "save target as" if you want to save it. I find it more convenient sometimes to just have it on the old PC.
Last edited by ALLT4; Feb 21, 2005 at 09:33 PM.
Racer
Joined: Oct 2002
Posts: 293
Likes: 0
From: Newnan Ga
You'd definately break or strip those small bolt with that much torque. You book certainly was talking about the pinion nut. I just put them in with an air ratchet or open end wrench and seat them well. Last time I was over careful using torque specs on something like that caused me a lot of extra work. I torqued a valve body in a tranny down according to specs and ended up with bad cross leaks. Every time I do it according to feel, I'm just fine.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by kellsdad
Thanks guys. I thought the correct torque might be 150 inch-pounds, but my cheapo manual has it listed as foot-pounds.
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Le Mans Master
Joined: May 2005
Posts: 5,214
Likes: 65
From: Queensland, AUSTRALIA
Originally Posted by kellsdad
Thanks guys. I thought the correct torque might be 150 inch-pounds, but my cheapo manual has it listed as foot-pounds.
