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: 12,517
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?
RACE ON!!!
RACE ON!!!
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?
RACE ON!!!
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.
RACE ON!!!
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
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
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.
RACE ON!!!
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.
