Cup 2's performance falls off way to fast on track
07-22-2021, 07:22 PM
#31
Rennlist Member
Has anyone actually done that? I've heard about some 997 gen 2 guys doing the 5 lug conversion but I'm not sure if anyone has done any of the 991s. I'd get the Renntorq tool or possible that new gun with the proprietary wheel nuts before I'd go to that expense, especially on an RS. I have the Renntorq set up if you would like to try it.
07-22-2021, 07:53 PM
#32
Rennlist Member
I could be wrong but I thought the owners manual (in particular the track maintenance section) had something (negative) to say about slicks in combination with the CLs and hubs ... I could be wrong, but I thought it was something along the lines of "slicks generate too much force/load on the hubs" ... YMMV
Having burned through several sets of Hoosiers on my 3RS I can speak to the performance and longevity these tires offer over the OE tire.
Like I said, don't let tire wear stop you from enjoying these incredible cars on a track!
-Dave
07-22-2021, 08:50 PM
#33
Rennlist Member
Thread Starter
Has anyone actually done that? I've heard about some 997 gen 2 guys doing the 5 lug conversion but I'm not sure if anyone has done any of the 991s. I'd get the Renntorq tool or possible that new gun with the proprietary wheel nuts before I'd go to that expense, especially on an RS. I have the Renntorq set up if you would like to try it.
07-22-2021, 10:29 PM
#34
Rennlist Member
Given how many CL car's I've seen at the track with centers not engaged, I wouldn't trust just anyone to swap them. Any potential shop should be able to recite the factory procedure from memory before you let them touch the wheels. Your life depends on it.
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HydroLogic (07-22-2021)
07-22-2021, 11:21 PM
#35
That's (obviously) super quick. It's a shame they don't make 2Rs in Senna sizes. Best Senna time is a 27.6 on the inferior (by all accounts) Trofeo. 2R over Trofeo by 1.5 to 2 sec at Laguna according to most estimates. Flip side of that coin is that the Trofeo is good for several days before it gives up.
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HydroLogic (07-23-2021)
07-23-2021, 01:56 AM
#36
Rennlist Member
07-23-2021, 01:58 AM
#37
Rennlist Member
My shop, SP Motorsports, is looking into what is needed to do this. MIght be impossible. They also made it seem like local tire shops won't be able to swap tires with my CL wheels. Such a bitch to drive to SP every time I need to swap wheels so was hoping to stay local. Lloyd's should be able to do it I hope!
07-23-2021, 01:59 AM
#38
Rennlist Member
Thread Starter
centers not engage?? what does that mean? Sounds scary
07-23-2021, 02:05 AM
#39
Rennlist Member
there is a "safety" locking mechanism that is intended to retain the CL in position, if it is not engaged there is nothing to prevent the CL from loosening
Once you remove the center cap on the CL itself there is a spring loaded lock that needs to be pressed in to allow the CL to be adjusted, the lock, when depressed
will remain so, enabling the CL to be loosened or tightened.
*it must be reengaged once the CL has been re-torqued*
the lock engages some "teeth" on the inside of the CL that prevents it from rotating.
many installers easily forget to reset the lock after remounting the wheel and CL ... thus the lock is not functional!
Once you remove the center cap on the CL itself there is a spring loaded lock that needs to be pressed in to allow the CL to be adjusted, the lock, when depressed
will remain so, enabling the CL to be loosened or tightened.
*it must be reengaged once the CL has been re-torqued*
the lock engages some "teeth" on the inside of the CL that prevents it from rotating.
many installers easily forget to reset the lock after remounting the wheel and CL ... thus the lock is not functional!
Last edited by Larry Cable; 07-23-2021 at 12:22 PM.
07-23-2021, 02:27 AM
#40
Rennlist Member
Thread Starter
there is a "safety" lock mechanism that is intended to retain the wheel should the CL become lose.
This is the "thing" you press in with the renntool after removing the center cap prior to removing the CL itself ... this 'lock' remains depressed until it is "popped out" in order to
re engage it ...
many installers easily forget to depress the lock after remounting the wheel and CL ... thus the lock is not functional
This is the "thing" you press in with the renntool after removing the center cap prior to removing the CL itself ... this 'lock' remains depressed until it is "popped out" in order to
re engage it ...
many installers easily forget to depress the lock after remounting the wheel and CL ... thus the lock is not functional
07-23-2021, 10:12 AM
#41
Rennlist Member
even when the dealer does the change, I still remove the wheels and make sure they are resintalled correctly before I head to the track - I don't trust anyone when it comes to my safety.
07-23-2021, 10:26 AM
#42
Ive had a main Porsche dealer not pull the safety lock out when servicing the car in the past, I run my car without caps at the track as my track support guys handle the wheel swaps but I always check to see if its pulled out before each drive.
07-23-2021, 12:18 PM
#43
Rennlist Member
07-23-2021, 12:42 PM
#44
Rennlist Member
Thread Starter
unbelievable that some Porsche dealers don't know what they doing
07-23-2021, 12:46 PM
#45
Rennlist Member
attaching a PAG/PCNA document about CL maintenance, in it you can clearly see the CL safety locking mechanism we are discussing...
checkout the pictures on 2,5, &16 those illustrate the lock and the CL ...
checkout the pictures on 2,5, &16 those illustrate the lock and the CL ...
Last edited by Larry Cable; 07-23-2021 at 12:48 PM.
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HydroLogic (07-23-2021)