Member Since: 16 Sep 2005
Location: Living among Bawbags
Posts: 4528
Wheel nut torque
A quickie question. From a search I see that 140nm is the setting for tightening the nuts on. Is this a dry or wet figure? By that I mean with lube or not, as I seem to remember from my fitting training that if you slip up the bolts then the amount of torque is reduced to achieve a like for like setting on dry bolts. Therefore possibly overtightening the buggas when I change over to MT/R's tomorrow.
Any input chaps??
Being an official member of the, 'just an ounce more to make sure brigade' and busting a nut last year I dont wish to bust another nut in the short term. I want to keep them intact.....possibly wet, but intact
22nd Dec 2008 7:35 pm
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Member Since: 06 Nov 2006
Location: In the Clubhouse
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Wet would be considerably less, but I don't have any figures for how much less. Why don't you want to fit them dry?Bodsys Brake Bible
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22nd Dec 2008 8:13 pm
jkp
Member Since: 16 Sep 2005
Location: Living among Bawbags
Posts: 4528
Just thinking of when I take them back off
I suppose if I get a new torque bar them dry fitting would be ok, as it is with million of cars over the world. Just was thinking of some preventative maintenance thats all. Anytime I loosen of a nut, I get the will it snap, oh' oh' oh'.... ah it's okay as I've done this many time over the last couple of decades.
22nd Dec 2008 8:21 pm
ronp
Member Since: 29 Nov 2006
Location: North Yorkshire
Posts: 15264
the quoted torque figure is for factory applied anti corrosion coating. I am not sure of the coating spec for the bolt and studs maybe S442 It will be a Ford spec and is a zinc flake coating with a lubricate topcoat giving a coeffcient of less than 0.1.
But the quoted range is good enough, don't be temped to put anything on the threads, you could easily snap or weaken the studs.
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I dont wish to bust another nut in the short term. I want to keep them intact.....possibly wet, but intact 
as I've done this many time over the last couple of decades. 
