2+2

Gents and ladies, I got a set of 993 17" I plan on putting on this weekend. Anyone know the torque for lug nuts...its the really really light aluminum lug nuts.
Also, anyone know what the brake caliper attachment bolt torque should be for Big Blacks?
Thanks!

Z-man

The torque for lug nuts on ALL Porsche model cars, ALL types of bolts is 96 lb-ft. (Some sources say 94, others 95 as well).

I don't know abvout the brake caliper bolt.

-Z.

adrial

95 lb/ft is the torque specs for the lugs..

If by big blacks you mean your brakes (stock 951S), you dont have big blacks I dont think. I was under the impression that big blacks were 928GTS brakes...or are those Little Reds?

I dont know the torque spec for that anyway <img border="0" title="" alt="[Wink]" src="wink.gif" />

Waterguy

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica"> Also, anyone know what the brake caliper attachment bolt torque should be for Big Blacks?
</font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">85 Nm (63 ft-lbs.) It is the same for all 944s, including the late M030 package with 928S4 brakes, so I assume it would be the same for "Big Blacks." <img border="0" alt="[byebye]" title="" src="graemlins/wave.gif" />

2+2

Thanks guys...Is it me? 96 lb-ft seems high. I couldn't believe how light the aluminum lug nuts were! Can they withstand that much torque?

Z-man

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by 2+2:
<strong>Thanks guys...Is it me? 96 lb-ft seems high. I couldn't believe how light the aluminum lug nuts were! Can they withstand that much torque?</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Yes they can: alum lug nuts can withstand 96 lb-ft of torque. I've torqued hundreds, perhaps thousands of lug nuts: I work the Track tech line for PCA - NNJR's DE.

The difference between 94-96 lb-ft. of torque is really not much, considering the accuracy of different torque wrenches.

Incidentally, my friend has a 911 Cup car with the single bolt in the middle of the wheel. Torque specs for that is like 300 lb-ft! The torque wrench that comes with the car was about 3 feet long!
-Z.

2+2

Thanks Z-man, Adrial and Waterguy....

IceShark

The lug nuts will take the speced torque of 96 but people have managed to break them. Shear the flatted portion off and they are left with the curved tip still socked on the wheel stud. What a mess that is. This is controversial, but you can use anti-seize on the threads. I do.

Also, I'm not so sure the nuts are in fact aluminum. All the aluminum fittings I have seen would be galling like crazy under that duty.

Tremelune

So that's...1128-1152 in-lbs? Maybe I should get a bigger torque wrench...

Tom Carson

I wouldn't torque the OEM Porsche wheel locks that much though