New 911's and centre lock wheels ?
New 911's and centre lock wheels ?
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Discussion

B16JUS

Original Poster:

2,386 posts

259 months

Wednesday 30th March 2011
quotequote all
Anyone own or know the answer.

Does each car come with a big socket ? i presume they are locking so that means each car is different to a degree ( maby 30 different locking combinations ) ?


wtdoom

3,742 posts

230 months

Thursday 31st March 2011
quotequote all
the Carrera GT comes with but you need to buy a torque multiplying wotsit or carry a 6 foot pole .

B16JUS

Original Poster:

2,386 posts

259 months

Thursday 31st March 2011
quotequote all
that was the next question as i imagine the torque setting would be massive.

Maby its a way of porsche getting the customers back for tyres

at a guess 550nm ?

wtdoom

3,742 posts

230 months

Thursday 31st March 2011
quotequote all
Porsche sell a kit . It has a nut adapter and a torque multiplying thingy . Was 500nm now i heard uprated figures say 600nm ( so says a reputable tuning firm . i havent checked ).
ill let you know .

RDMcG

20,432 posts

229 months

Thursday 31st March 2011
quotequote all
The Porsche kit is not cheap and most of the owners (at least here in Canada) use an aftermarket version.

J-P

4,421 posts

228 months

Thursday 31st March 2011
quotequote all
B16JUS said:
Anyone own or know the answer.

Does each car come with a big socket ? i presume they are locking so that means each car is different to a degree ( maby 30 different locking combinations ) ?
No. Can't take the wheels off. OPC job only (unless you buy the kit). 550nm torque is correct, so you'd need a damn big pole to take them off anyway!

Old Trout

1,705 posts

197 months

Thursday 31st March 2011
quotequote all
There is an earlier update - 500nm for road, 600nm for track (this was after the car was launched so I guess someone lost a wheel on a track day!)

bergmeister

1,084 posts

266 months

Thursday 31st March 2011
quotequote all
centre lock only means its a taper lock one nut,no combinations etc
I have a 1 meter bar ,with a 3/4 inch drive which fits the porsche socket,it sits inside a piece of foam pipe insulation.
You can take the wheels off your self,the important part is read the handbook and make sure the centre spline lock, springs back out.
The porsche guide line is 500nm for normal use and 600 for track work.
Sealy do a nice multiplyer, that you can use with a conventional short torque wrench,its not difficult,sounds great to have centre locks on a road car,in reality a pain for most people.
Almost as bad ,is no spare wheel!on a road car.

cdixon

330 posts

228 months

Thursday 31st March 2011
quotequote all
Porsche sell a good breaker bar which is telescopic for about £200, useful to get the wheels off. Still need a torque wrench to put them back on.

You should always torque the wheels up with the wheel lifted off the ground. This ensures the centre nut sits correctly on the wheels cone fitting.

Also use a plastic trim removing tool to remove the centre caps as a screw driver will bend the metal covers on them.

The locking pins can be a bit of a nightmare as they can stick. Just make sure the centre spindle is completely out and engaged with the teeth on the inside of the centre nut else the wheel is not locked.


Lastly if you have PCCB brakes like me, then i would advise not removing any wheels unless you have the special Porsche Dildo tool ! Costs over a grand to buy though !


Edited by cdixon on Thursday 31st March 09:09

cdixon

330 posts

228 months

Thursday 31st March 2011
quotequote all
Old Trout said:
There is an earlier update - 500nm for road, 600nm for track (this was after the car was launched so I guess someone lost a wheel on a track day!)
Yep my cousin lost a wheel on his track day. A couple of days after the local OPC fitted new tyres. Cost Porsche several thousands of euros to fix the damage !!!

(The accident did not happen in this country or with a UK OPC)

The centre lock wheel design bugs me because they all use right hand threads. Why did Porsche not just use the Carrera GT centre locks ?

The update that says to tighten the wheel nut torque to 600nm for track also says that the cone surfaces that mate must also be well greased. I have heard stories that some of the CL nuts have practically welded to the wheels after several heat cycles from track driving, hence adding the grease. Adding the grease could also be why the torque is required to be raised to 600nm ?






Edited by cdixon on Thursday 31st March 09:06

nsm3

2,831 posts

218 months

Thursday 31st March 2011
quotequote all
Seems like one of those "advancements" that is just not necessary or useful?

I have the same problem with the back wheel on my Ducati (about 200nm) - but how do you carry a scaffold pole about with you - right PITA !

tonygt3

255 posts

245 months

Thursday 31st March 2011
quotequote all
With a torque multipler from Sealey £160 and the wheels on the deck, it is no big problem to free the nut.
You will need someone on the brake pedal to free off/ torque the fronts.

As has been said, the wheel nut must be confirmed 100% A1 reset

GT Glee

705 posts

197 months

Thursday 31st March 2011
quotequote all
cdixon said:
The update that says to tighten the wheel nut torque to 600nm for track also says that the cone surfaces that mate must also be well greased. I have heard stories that some of the CL nuts have practically welded to the wheels after several heat cycles from track driving, hence adding the grease. Adding the grease could also be why the torque is required to be raised to 600nm ?
Prolly with some good ole Optimoly TA (aluminium paste) to allow greater torque accuracy.

C2'S'man

622 posts

245 months

Thursday 31st March 2011
quotequote all
Mmmmm, grease and Porsche, now what springs to mind......? eek

tonygt3

255 posts

245 months

Thursday 31st March 2011
quotequote all
GT Glee said:
cdixon said:
The update that says to tighten the wheel nut torque to 600nm for track also says that the cone surfaces that mate must also be well greased. I have heard stories that some of the CL nuts have practically welded to the wheels after several heat cycles from track driving, hence adding the grease. Adding the grease could also be why the torque is required to be raised to 600nm ?
Prolly with some good ole Optimoly TA (aluminium paste) to allow greater torque accuracy.
There is a precise Porsche procedure for splitting the nut and applying the aluminimum grease to specific faces. I would suggest that this is left to the experts who will have the procedure.

bergmeister

1,084 posts

266 months

Thursday 31st March 2011
quotequote all
Just get a copy of the centre lock update from your dealer,explains about the grease app etc

DSM2

3,624 posts

222 months

Thursday 31st March 2011
quotequote all
J-P said:
No. Can't take the wheels off. OPC job only (unless you buy the kit). 550nm torque is correct, so you'd need a damn big pole to take them off anyway!
A standard CV torque wrench is rated up to 750Nm. It's not that long but you'd not get it in the car!!


Manks

28,176 posts

244 months

Thursday 31st March 2011
quotequote all
J-P said:
No. Can't take the wheels off. OPC job only (unless you buy the kit). 550nm torque is correct, so you'd need a damn big pole to take them off anyway!
So what happens if you get a puncture?

Bill Stein

1,595 posts

231 months

Thursday 31st March 2011
quotequote all
Are like the good old days on my Jaguar 3.4 MK2, just get a big hide mallet and a wooden adaptor and bash away.

Stupid idea on a road car, or a track car for that matter unless your entering LM 24.driving


Are penny dropped...its so you have to buy the very special tyres that Porsche sell that ar'nt like the other's you can buy on the high street for a third of the price.
I'm guessing they'll padlock the engine lids down before to long as well!laugh

Edited by Bill Stein on Thursday 31st March 21:34

Manks

28,176 posts

244 months

Thursday 31st March 2011
quotequote all
Bill Stein said:
Are like the good old days on my Jaguar 3.4 MK2, just get a big hide mallet and a wooden adaptor and bash away.

Stupid idea on a road car, or a track car for that matter unless your entering LM 24.driving


Are penny dropped...its so you have to buy the very special tyres that Porsche sell that ar'nt like the other's you can buy on the high street for a third of the price.
I'm guessing they'll padlock the engine lids down before to long as well!laugh

Edited by Bill Stein on Thursday 31st March 21:34
So if you get a nail in your tyre do you have to get trailered to an OPC?