Center lock wheels on my 997.2 GT3
10-27-2012, 12:50 PM
#47
Rennlist Member
Wheel carrier = upright/wheel hub? Sorry.
I confirmed that track rods are monoball lower wishbones also, upper not.
Thanks John.
10-27-2012, 01:07 PM
#49
Let's torque one until it fails. Probably 1000 lb? How could anyone ever tighten one that high? I've seen big guys struggle with the 444 ft lb. We would need to progressively tighten and than magna flux?
I wonder if replacement hubs have the same metalurgy and thickness of originals.
I wonder if replacement hubs have the same metalurgy and thickness of originals.
10-27-2012, 01:40 PM
#50
Rennlist Member
Keep smoking the "since porsche made it, it must be good" crack.
I don't think I've ever seen anyone change CL wheels by themselves. There's always one dummy straining to break those nuts loose and another dummy holding the brake
All kidding aside, being exceptionally tall and weighing more than 50% of the recommend torque setting gives you a significant advantage breaking those wheels loose. It was painful watching the wafey euro trins Miguel and Nick changing wheels at RR last weekend. It was a ton of work.
Both their cars had to be started to get more brake pressure to keep the wheels from turning. Maybe because were were on the grass. Not sure...
I can send you the link to the pricing on the OZ's if you like
I don't think I've ever seen anyone change CL wheels by themselves. There's always one dummy straining to break those nuts loose and another dummy holding the brake
All kidding aside, being exceptionally tall and weighing more than 50% of the recommend torque setting gives you a significant advantage breaking those wheels loose. It was painful watching the wafey euro trins Miguel and Nick changing wheels at RR last weekend. It was a ton of work.
Both their cars had to be started to get more brake pressure to keep the wheels from turning. Maybe because were were on the grass. Not sure...
I can send you the link to the pricing on the OZ's if you like
10-27-2012, 02:01 PM
#51
Rennlist Member
The braker bar I have is great, so easy.
For fun I timed it, from my car parked and all tools stowed it takes me an easy 12 minutes to change 4 wheels. Same as 5 lug except I don't have to remember to charge gun.
Randy will do it quicker.
If I rush I can grease them in the same time, I looked at pads and gave everything a quick look.
Never started my car to hold brakes, only an idiot jacks up a car in the grass.
I bought some CL oz 4 weeks ago for $1750.00 plus shipping.
For fun I timed it, from my car parked and all tools stowed it takes me an easy 12 minutes to change 4 wheels. Same as 5 lug except I don't have to remember to charge gun.
Randy will do it quicker.
If I rush I can grease them in the same time, I looked at pads and gave everything a quick look.
Never started my car to hold brakes, only an idiot jacks up a car in the grass.
I bought some CL oz 4 weeks ago for $1750.00 plus shipping.
10-27-2012, 02:16 PM
#52
Rennlist Member
The braker bar I have is great, so easy.
For fun I timed it, from my car parked and all tools stowed it takes me an easy 12 minutes to change 4 wheels. Same as 5 lug except I don't have to remember to charge gun.
Randy will do it quicker.
If I rush I can grease them in the same time, I looked at pads and gave everything a quick look.
Never started my car to hold brakes, only an idiot jacks up a car in the grass.
I bought some CL oz 4 weeks ago for $1750.00 plus shipping.
For fun I timed it, from my car parked and all tools stowed it takes me an easy 12 minutes to change 4 wheels. Same as 5 lug except I don't have to remember to charge gun.
Randy will do it quicker.
If I rush I can grease them in the same time, I looked at pads and gave everything a quick look.
Never started my car to hold brakes, only an idiot jacks up a car in the grass.
I bought some CL oz 4 weeks ago for $1750.00 plus shipping.
You talk to much sometimes....
CL's are absolutely ridiculous. BUT, not dangerous. If done right, they are as safe as lugs. Its just the procedure that is dangerous. Larger margin for error than 5 lug.
10-27-2012, 02:44 PM
#53
Rennlist Member
Sorry but I'm with Dawg on this one. Never seen TrakCar with a torque wrench in his hand and when we were at Road America 2 years ago i was the one holding the brakes while Randy changed wheels.
I have run Studs on all my cars, M3 & GT3, for 7 years, would have been longer but Boats don't do studs, and never cross threaded one, I always hand start them, and also never broken one or had any come loose.
Studs are for Studs
and CL's are for Ballers 
Peter
I have run Studs on all my cars, M3 & GT3, for 7 years, would have been longer but Boats don't do studs, and never cross threaded one, I always hand start them, and also never broken one or had any come loose.
Studs are for Studs
and CL's are for Ballers Peter
10-27-2012, 03:53 PM
#56
Race Director
12 minutes....LOL...Ive seen how you move.
I do CL's by myself with the truck brake pedal depressor. If I dont change bake pads the brakes grab fine and I don't have to start the car.
I do CL's by myself with the truck brake pedal depressor. If I dont change bake pads the brakes grab fine and I don't have to start the car.
10-27-2012, 04:47 PM
#58
Instructor
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Bono, the question you are asking can't be answered by anybody on any forum... Only Porsche know if their hubs are up to the task and they aren't answering anybody's questions. The facts to date are as follows:
- all failures with a documented cause by their owner to date have been due to one of two reasons; (i) over torquing (ii) incorrectly torqued leading to wear of the hub and failure. This accounts for less than 50% of cases posted...
- all remaining failures have been posted but no further info has subsequently been shared by the owner leading to speculation each time about the cause thus it is not determinable... Basically useless info as owners have failed to share the facts or findings by Porsche or an independant body surrounding the failure of their hubs...
- there are guys on this forum whom have executed wheel changes probably in the hundreds without a failure whilst following the procedure stipulated by Porsche that arguably dismisses Bpracing's view on the CLs and their inability to be used for competitive track use. Their failure to warrant work on CLs could be just as suggestive that they aren't 100% confident they can get it right. Alternatively, they don't want to take responsibility for a system that may have a flaw when the manufacturer won't step up with a clear and concise answer... Either way, they expressed THEIR opinion as a shop and are entitled to it...
- details or guidelines outlining when these hubs timeout are required but not available as Porsche has not stepped up with specific direction on this important issue.... More info required...
I'm afraid that beyond these few points, there a few other facts that you will be able to extract online...
Cheers
Chris
- all failures with a documented cause by their owner to date have been due to one of two reasons; (i) over torquing (ii) incorrectly torqued leading to wear of the hub and failure. This accounts for less than 50% of cases posted...
- all remaining failures have been posted but no further info has subsequently been shared by the owner leading to speculation each time about the cause thus it is not determinable... Basically useless info as owners have failed to share the facts or findings by Porsche or an independant body surrounding the failure of their hubs...
- there are guys on this forum whom have executed wheel changes probably in the hundreds without a failure whilst following the procedure stipulated by Porsche that arguably dismisses Bpracing's view on the CLs and their inability to be used for competitive track use. Their failure to warrant work on CLs could be just as suggestive that they aren't 100% confident they can get it right. Alternatively, they don't want to take responsibility for a system that may have a flaw when the manufacturer won't step up with a clear and concise answer... Either way, they expressed THEIR opinion as a shop and are entitled to it...
- details or guidelines outlining when these hubs timeout are required but not available as Porsche has not stepped up with specific direction on this important issue.... More info required...
I'm afraid that beyond these few points, there a few other facts that you will be able to extract online...
Cheers
Chris
10-27-2012, 08:42 PM
#59
Rennlist Member
Im that idiot, and so is your friend Randy. I call complete bull**** on your 12 min wheel change. Come to think of it, Ive never seen you carry a tool ever at the track.
You talk to much sometimes....
CL's are absolutely ridiculous. BUT, not dangerous. If done right, they are as safe as lugs. Its just the procedure that is dangerous. Larger margin for error than 5 lug.
You talk to much sometimes....
CL's are absolutely ridiculous. BUT, not dangerous. If done right, they are as safe as lugs. Its just the procedure that is dangerous. Larger margin for error than 5 lug.
You should know better..
Sounds like a bet. Eddie holds the cash..
I do talk a lot when I'm drunk, I will try to keep it down around you, I should know you are sensitive.
Sorry but I'm with Dawg on this one. Never seen TrakCar with a torque wrench in his hand and when we were at Road America 2 years ago i was the one holding the brakes while Randy changed wheels.
I have run Studs on all my cars, M3 & GT3, for 7 years, would have been longer but Boats don't do studs, and never cross threaded one, I always hand start them, and also never broken one or had any come loose.
Studs are for Studs and CL's are for Ballers
Peter
I have run Studs on all my cars, M3 & GT3, for 7 years, would have been longer but Boats don't do studs, and never cross threaded one, I always hand start them, and also never broken one or had any come loose.
Studs are for Studs
and CL's are for Ballers Peter
Watch Trakcar nation..
I can't help myself. Rushing for next session or next beer.
Not both
10-27-2012, 09:32 PM
#60
GT3 player par excellence
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Im that idiot, and so is your friend Randy. I call complete bull**** on your 12 min wheel change. Come to think of it, Ive never seen you carry a tool ever at the track.
You talk to much sometimes....
CL's are absolutely ridiculous. BUT, not dangerous. If done right, they are as safe as lugs. Its just the procedure that is dangerous. Larger margin for error than 5 lug.
You talk to much sometimes....
CL's are absolutely ridiculous. BUT, not dangerous. If done right, they are as safe as lugs. Its just the procedure that is dangerous. Larger margin for error than 5 lug.
I'm buying Greek bonds