Done with 997.2 Centerlocks
just fyi my personal assessment is that the 997.2 center locks may not be the best choice for a track heavy car. And given that I take my personal safety very seriously I have taken it upon myself to swap out the center locks for the Cup Car center locks. This conversion is now mostly complete and we're wrapping up some details.
I will post pictures when I can - people wishing to see this conversion in person are encouraged to attend GGR Thunderhill on July 14 & 15 or HOD Miller on July 21 and 22, and more recently the high desert invitational at Reno on Nov 2-4… I will of course report and update this thread on my thoughts and impressions of this conversation. |
Originally Posted by daveo4porsche
(Post 9668110)
just fyi my personal assessment is that the 997.2 center locks may not be the best choice for a track heavy car. And given that I take my personal safety very seriously I have taken it upon myself to swap out the center locks for the Cup Car center locks. This conversion is now mostly complete and we're wrapping up some details.
I will post pictures when I can - people wishing to see this conversion in person are encouraged to attend GGR Thunderhill on July 14 & 15 or HOD Miller on July 21 and 22, and more recently the high desert invitational at Reno on Nov 2-4… I will of course report and update this thread on my thoughts and impressions of this conversation. After two years on the track in a 3.8 RS, I don't think the Centerlocks are trouble, it's a well worn topic. But there are two recent incidents (of catastrophic failure) which will force Porsche's hand to address the "usability" aspects of the street centerlock design. As with the coolant fittings, we can only hope they sort it out before they kill someone. For a GT3 that's mostly track-oriented, I wonder what the intended service life of the motorsports hub and centerlock should be. |
Is there actually a battery powered impact drive that can produce enough torque? I think I would rather carry a 4 ft wrench than a giant compressor or air tank.
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The best of luck with your cup car center locks. Just remember that those nuts and hubs also need replacing from time to time or things can go wrong.
Just wondering, why not opt for the RSR/Carrera GT system? |
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He is probably staying away from the CGT/RSR version because the wheel to hub mating surfaces are completely different for that system, and he wouldn't have many (if any) wheel options for his street GT3.
Note the conical hub that is unique to that setup - street wheels wont work. |
Originally Posted by deputydog95
(Post 9668165)
Is there actually a battery powered impact drive that can produce enough torque? I think I would rather carry a 4 ft wrench than a giant compressor or air tank.
I used it personally on cup car. snap on 18v |
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Also Milwawkee v28....
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Originally Posted by FLA997
(Post 9668828)
and in fact, i have two more brand new ones i like to sell. dont ask... i ended up with 4 of them. |
Originally Posted by Carrera GT
(Post 9668158)
It certainly would be nice to be able to rattle the wheels on and off with an air tool, and tie down nuts would be very handy.
After two years on the track in a 3.8 RS, I don't think the Centerlocks are trouble, it's a well worn topic. But there are two recent incidents (of catastrophic failure) which will force Porsche's hand to address the "usability" aspects of the street centerlock design. As with the coolant fittings, we can only hope they sort it out before they kill someone. For a GT3 that's mostly track-oriented, I wonder what the intended service life of the motorsports hub and centerlock should be. Also porsche motorsport publishes a "useful" life guidance for the cup car center locks - but I know of no such guidance for the street center locks. I went with the cup center locks due to the availability of "spare/loaner" wheels in the group of people I run with - I have my own sets (well I do now) but others in the group also have cup cars and will be making similar modifications to their GT3's - so I will have a pool of wheels to help save a track weekend. YMMV on this sort of thing. |
:thumbup:
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Interesting that you choose cup car center locks but I read where you have some friends with extra cup car wheels.
Would the cost to 5 lug be less expensive in parts and actually many more choices in 5 lug wheels? Do stock rotors fit or now don't you have to use even more expensive rotors for cup car hubs? How are cup car center locks for street use? |
I think I would have done 5 lug instead of another type of center locks. You could always buy a second set of 5 lug wheels.
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So, can you still use your stock center lock wheels with the Cup center lock system?
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Originally Posted by tcsracing1
(Post 9669642)
So, can you still use your stock center lock wheels with the Cup center lock system?
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