Stud bolt torque is limited by coarse thread which is screwed into cast block, standard 8.8 3/8 fine thread bolt is good for 49 , refer chart, wheel studs are no different. M
| ausmini https://www.ausmini.com/forums/ |
|
| Torque for wheels nuts with flat washers https://www.ausmini.com/forums/viewtopic.php?f=2&t=87401 |
Page 1 of 1 |
| Author: | smac [ Tue Oct 07, 2014 5:26 am ] |
| Post subject: | Torque for wheels nuts with flat washers |
Anyone know for sure what the torque should be for shanked wheels nuts and flat washers? Running Revolutions and just not sure if the normal torque is dictated by the wheel stud size or the tapered style nut. Cheers |
|
| Author: | 69cooper [ Tue Oct 07, 2014 9:19 am ] |
| Post subject: | Re: Torque for wheels nuts with flat washers |
I run rose pedal rims on my race mini and set the straight shank wheel nuts at 50 ibf ft, never had any issues. Cheers Mal |
|
| Author: | awdmoke [ Tue Oct 07, 2014 9:56 am ] |
| Post subject: | Re: Torque for wheels nuts with flat washers |
Same, and I run 13x7" Revolution RFX. The only time they ever came loose was before I started using a torque wrench. |
|
| Author: | smac [ Tue Oct 07, 2014 12:18 pm ] |
| Post subject: | Re: Torque for wheels nuts with flat washers |
Thanks for that. Figured it was more than normal, but don't want to go breaking studs. |
|
| Author: | TheMiniMan [ Wed Oct 08, 2014 8:10 pm ] |
| Post subject: | Re: Torque for wheels nuts with flat washers |
i run them all at 42Lbs |
|
| Author: | Hunter2 [ Thu Oct 09, 2014 2:18 pm ] |
| Post subject: | Re: Torque for wheels nuts with flat washers |
It is the size of the wheel stud - 3/8" UNF - that dictates the torque spec not the wheel nut sleeved or tapered. 40-42 ft/lbs is MAX, depending on lube. I once had to tell a Mini Meet crew that they had to replace all 8 wheel studs on a Cooper S after they broke a second wheel stud...before they could take part in the standing start fast lap competition at Blackhawk Farms in Wisconsin. Over tightening the wheel nuts will cause the stud to fail. If you think 50 ft.lbs. is OK be prepared for breakage. Think about it - 3/8" coarse head studs go in the block hand tight, 3/8" UNF head stud nuts are + 40 ft. lbs. Why would the same bolt be different on the wheel?? They aren't different...torque is dependent on size, threads, material. I once visited a friend's garage as he broke a double-nutted 3/8" head stud as he was cranking it into the block...fortunately the coarse threads proved no problem in extracting the bolt broken off at the block face. |
|
| Author: | 69cooper [ Thu Oct 09, 2014 3:17 pm ] |
| Post subject: | Re: Torque for wheels nuts with flat washers |
Stud bolt torque is limited by coarse thread which is screwed into cast block, standard 8.8 3/8 fine thread bolt is good for 49 , refer chart, wheel studs are no different. M
|
|
| Author: | winabbey [ Thu Oct 09, 2014 3:26 pm ] |
| Post subject: | Re: Torque for wheels nuts with flat washers |
For what it's worth, the Mini factory workshop manual (TP832) specifies 42 lbs/ft for the road wheel nuts, so that's the limit I'd be using. |
|
| Author: | 69cooper [ Thu Oct 09, 2014 5:01 pm ] |
| Post subject: | Re: Torque for wheels nuts with flat washers |
interesting, I am wondering what original factory spec is for studs, all modern studs you would assume would be grade 8.8. M 
|
|
| Page 1 of 1 | All times are UTC + 10 hours |
| Powered by phpBB® Forum Software © phpBB Group http://www.phpbb.com/ |
|