47 replies to this topic

[Hark]

Can't find it on the search but am on my phone? Anyone know it?? Always done them up with the spider socket to hand tight but have a torque wrench now.

[MrSimba]

90nm

[Hark]

Many thanks

[siztenboots]

the most important thing is to clean the threads for a smooth turning, and don't cross thread the bolt. Bolts are cheap to replace, wheels hubs aren't.

[mbes2]

Remember, not to over tighten the lock nut.... or the key will hate you

[siztenboots]

mbes just reminded me, remember to throw away the lock nut and replace with standard bolt.

[VIX]

mbes just reminded me, remember to throw away the lock nut and replace with standard bolt.

x 4

[Hark]

No lockers on mine and think theres a tiny bit of copper greese on the threads. Usually go in and out quite easily and touch wood not had one come loose yet.

[chris_uk]

90nm!! We were doing them at 110nm and i could quite easily undo them without much effort.. That said tho i always over tighten them, i use my built in torque wrench and probably do them up to 150ish lol Some of you may remember at the national last year i snapped a bolt whilst i was tightening them lol

[G-Bob]

wheel nut torque setting = 1 small grunt!

[TheRealVXed]

The likelyhood of them coming undone at 50nm is fairly small.... 90nm is more than sufficient!

[VIX]

The likelyhood of them coming undone at 50nm is fairly small.... 90nm is more than sufficient!

- although you do need to check them regularly.

[Sutol]

90nm!!

We were doing them at 110nm and i could quite easily undo them without much effort..

That said tho i always over tighten them, i use my built in torque wrench and probably do them up to 150ish lol

Some of you may remember at the national last year i snapped a bolt whilst i was tightening them lol

yes I remember, the effort you were putting in I think it was more like 400nm. 90nm is almost finger tight though

[Hark]

Do people that track regularly torque them or just make sure they are on tight by hand?

[chris_uk]

Weve started to use a torque wrench but in the past ive used the gun to put them on then litterally just gave em a little 1/4 turn

[techieboy]

I always use a torque wrench set to 90nm on them and always double check them on trackdays. Though never bother checking the again on the road.

[wemorgan]

I check the torque inbetween track sessions. The bolts should be clean, dry and certainly free from copper grease.

[Sutol]

I check the torque inbetween track sessions.

The bolts should be clean, dry and certainly free from copper grease.

at the last service back on track put a smearing of copper slip on each bolt

[wemorgan]

I appreciate that many people do this, even the 'professionals' but this is a common mistake that has been perpetuated for decades. But don't take my word for this, read what Bosch say in "Bosch Automotive Handbook" about bolt torques. It's made clear that threads should be clean and dry, and that the torque specified is a function of the friction in the threads. So my adding any lubricated the coefficient of friction changes and therefore so does the torque.

[Ormes]

I appreciate that many people do this, even the 'professionals' but this is a common mistake that has been perpetuated for decades.

But don't take my word for this, read what Bosch say in "Bosch Automotive Handbook" about bolt torques. It's made clear that threads should be clean and dry, and that the torque specified is a function of the friction in the threads. So my adding any lubricated the coefficient of friction changes and therefore so does the torque.

if you grease the bolts then 90nm will drive the bolt in futher than 90nm without the grease. ...torque settings assume dry clean threads unless explicitly specified otherwise.

Edited by Ormes, 14 June 2012 - 05:25 PM.