How do you check center lock torque before track event?
02-08-2018, 12:24 PM
#31
02-08-2018, 12:41 PM
#34
You're not checking it. You're re-setting it. I know it's a nit picking but that's how we end up with 3 pages of replies.
So the simple answer is: You cannot check. You have to re-do if you want to be sure.
There's still the question of "If you were sure before... are you still sure??"
Some are saying they can back off. Some are saying they can't. MORTAL KOMBAT!!!!
02-08-2018, 02:14 PM
#35
If anyone needs a great torque wrench for center lock wheels I am selling my Proto 6020AB 3/4” torque wrench with a range of 90 to 600 ft lbs. it is in excellent condition. $400 plus shipping. Check out this link to my add.
Charley
https://rennlist.com/forums/parts-ma...l#post14786842
Charley
https://rennlist.com/forums/parts-ma...l#post14786842
Last edited by CharleyH; 02-08-2018 at 03:01 PM.
02-08-2018, 02:44 PM
#36
Edited to be nice because the giant pics are gone. Good luck with the sale.
Last edited by Wild Weasel; 02-08-2018 at 04:05 PM. Reason: Good Karma
02-08-2018, 03:00 PM
#37
Thanks for spamming my thread with giant pictures.
Just for that, I'll mention that the torque wrench you're selling seems inferior and far less practical than the one everyone buys from Precision Instruments. The Precision Instruments breaks down to fit in a case that isn't nearly 4 feet long and doesn't need to be wound down to zero torque and then wound back up every time you use it.
But good luck with the sale.
Just for that, I'll mention that the torque wrench you're selling seems inferior and far less practical than the one everyone buys from Precision Instruments. The Precision Instruments breaks down to fit in a case that isn't nearly 4 feet long and doesn't need to be wound down to zero torque and then wound back up every time you use it.
But good luck with the sale.
.... you might want to do a little research before you make uninformed comments about quality.
Last edited by CharleyH; 02-08-2018 at 03:56 PM.
02-08-2018, 03:46 PM
#38
02-08-2018, 04:06 PM
#39
02-08-2018, 06:13 PM
#40
Rennlist Member
I have to agree with Matt. First, the 991 CL's are not the same as the 997. They are not compatible and use different torque values. I don't see how a wheel can change torque if the locking mechanism is properly engaged, essentially prohibiting the CL from loosening. I would and will (car is new to me for the DE season) pull the wheel caps prior to event to check that the locks are properly seated. Beyond that, no further torquing for me, its not worth the risk of hernia or back spasms.
Last edited by 991carreradriver; 02-08-2018 at 07:52 PM.
02-08-2018, 06:30 PM
#41
02-08-2018, 06:40 PM
#42
Rennlist Member
Pulling the caps to make sure the locks are stil ‘locked’ is a good practice. Just make sure you replace the caps prior to going on track, or even driving at all. The Centerlock system is design to be a sealed system. Without the caps, dirt and grit gets in and excessively wears the components causing slop and play. Every event I go to, I see Centerlock cars running without caps.
Although, the worst thing I ever saw was someone using anti seize paste instead of Optimol grease. The driver told me because they are both silver they are the same type of grease. Definitely not.
Although, the worst thing I ever saw was someone using anti seize paste instead of Optimol grease. The driver told me because they are both silver they are the same type of grease. Definitely not.
02-08-2018, 07:50 PM
#43
Rennlist Member
I am not fan of the CL as it is a royal PIA to deal with, but "it is what it is". One can always opt to go after market to install the 5 lug system and be done with it. Other than having the luxury of a 19" setup, I am not convinced it is safer. The CL does boast a big unsprung weight reduction, I am not good enough to ever see the difference.
02-09-2018, 08:41 AM
#44
That's what this discussion is about. Being confident. If the CL nut has a mechanism that literally locks it in place and prevents it from backing off, that seems like a pretty tangible difference between the two, doesn't it?
One can always opt to go after market to install the 5 lug system and be done with it. Other than having the luxury of a 19" setup, I am not convinced it is safer. The CL does boast a big unsprung weight reduction, I am not good enough to ever see the difference.
I don't think anyone is suggesting that one system is safer than the other if they're properly used. It's just that center locks are a giant PITA to deal with and offer no advantages for the hassle (other than looking pretty).
As far as I'm aware, there is NO weight savings on the center locks.
02-09-2018, 09:25 AM
#45
Rennlist Member
What are you talking about? Are you asking why we might be confident that a CL nut won't back off but not confident that lug nuts or bolts won't?
That's what this discussion is about. Being confident. If the CL nut has a mechanism that literally locks it in place and prevents it from backing off, that seems like a pretty tangible difference between the two, doesn't it?
Same argument can be made for scotch and fresh engine oil, can't it?
Lug nuts can easily be over-tightened leading to failure.
I'm not aware of any such aftermarket conversion kit. Can you post a link?
As far as I'm aware, there is NO weight savings on the center locks.
That's what this discussion is about. Being confident. If the CL nut has a mechanism that literally locks it in place and prevents it from backing off, that seems like a pretty tangible difference between the two, doesn't it?
Same argument can be made for scotch and fresh engine oil, can't it?
Lug nuts can easily be over-tightened leading to failure.
I'm not aware of any such aftermarket conversion kit. Can you post a link?
As far as I'm aware, there is NO weight savings on the center locks.
Porsche has long publicly stated that there is unsprung weight reduction due to the CL design. for example in the GT2 RS, the published report in Excellence this month states that it is 24 lbs.