Wheel nut torque settings??

[ghia_67]

Anybody out there know what the torque settings are for 911 aluminium wheel nuts.

Help will be greatly appreciated.

Thanks in advance

[targa911S]

90 ft.lbs.

[Early_S_Man]

Actually ... it has been 94 lb-ft, per the factory service manual, ever since the aluminum nuts were introduced with Fuchs wheels in July, 1966!

[steve911]

Its also in the owner's manual and Bentley's...

[alertmike]

Recently checked Bentley and they have 96. The point is all should be at the same tightness.

[Early_S_Man]

Bentley has 94 in some places, and 94 in others ...

I suspect a conversion error led to the 96 figure.

Strangely enough ... my '73 owners manual lists 101 lb/ft' on page 73!

[Formerly Steve Wilkinson]

While we're on the subject, I was advised by Steve Weiner to put anti-sieze lube--preferably the copper-based Wurth 800 stuff--on the face of the lugnuts where it contacts the wheel, but _not_ on the threads.

Stephan

[caliber60]

150lbs+ per my repair shop's impact gun. That's why I recheck the torque after the car is back from the shop. This is from the largest independent shop in L.A. basin. Because they are famous, not not mean that are carefully.

[MarkP]

Tech inspection at race events is 100lbs.

[CamB]

Everyone who has a torque wrench that is actually accurate at 94 ft lb within that 2 ft lb please stand up! Mine is crap!

I am always staggered at how high the torque is.

[MarkP]

That brings up an interesting question - how much do you need to spend to get a decent torque wrench?

[Formerly Steve Wilkinson]

I don't know the answer to that--probably at least $150, and a lot of people would say even that was a pretty approximate torque wrench, but two interesting things about torque wrenches that I have learned is that they are most accurate in the middle of their range and least accurate at the extremes. So most serious mechs have two. My one torque wrench runs from 10 to 100 foot-pounds, meaning that when I'm using it to torque lugnuts, it's probably barely close to the proper setting.

The other thing, which I never knew, is to always release the spring tension on a torque wrench after use. Never store it at anything but the lowest end of its setting scale--i.e. totally "unwound."

[targa88]

IT all depends the kind of work you use it for.Torquing your wheel nuts @ about 94lbs is not an issue.
When you are dealing with more sensitive issue - re-assembling an engine is a different story- where precision is required. I would opt for better quality.
I have two: one cheapy(less than $100) for the track and a better quality one for the home/garage( more than twice the price).

[rfix'n]

Not a totally scientific test but I recently used my Harbor Freight $20, 10 - 150 lb wrench to tighten lug nuts to 60 ft. lbs.. Then I took a Snap On (freinds) set to 60 and got nothing but clicks on all five lugs. Tightened the Snap On to 94 ft lbs on all five lugs. Checked with the Harbor Freight and four out of five clicked, the fifth moved 1/8 of a turn then clicked. Figured this test of the high and low calibration was good enough for lugnuts.

[MotoSook]

This was taken from a torquing spec I developed for a customer. It was designed for much heavier duty equipment than our cars, but the important thing to make note of is the lubrication note.



Stephan, per S.Weiners caution, lubing the mating surface of the lug nut and wheel, will eliminates (relative) errors in the torque "to the bolt."

Take it for what it's worth.

And there was a discussion on torque wrench accuracy some time ago.

[Jim Sims]

"So most serious mechs have two. " Serious 911 mechanics are likely to have four or five torque wrenches to cover the range of torques required. I'm only three years into this hobby and I already have three and borrow a fourth larger one regularly. Rocker-arm shaft pinch bolts to wheel bearings and transmission shafts represent quite a range in physical size and torque capability requirements. Cheers, Jim

[cowtown]

I've also been told by knowledgeable mechanics that beam-type wrenches are more accurate than clickers (at least at the home-shop level), so I use the beams when I have the room.

That's a rare combination - the cheaper type of tool is better in this case.

[logician]

Hi,

So what torque should be used with steel lug nuts on Fuchs? For lack of other information, I've been using 94 ft/lbs -- same as alloys. But its not clear to me that figure applies with the different nut material. Does anyone know?

-Juan

[David]

On anti-seize: I've always used anti-seize, but I read recently that it doesn't allow proper torqueing. The article said to use a heavy oil instead.

[sammyg2]

If you want your torque wrench to stay accurate allways relax the spring when not in use. Take it down to zero or equivalent and it will stay in calibration longer.