RE: Porsche centre-locks - further recalls

[PiB]

I really considered a GT3 and put a lot of thought into making one work for me (the engine is soooooo sweet).

Armstrong Multiplier tool.

http://youtu.be/GzpTU7lBxBA

But really, why didn't they just put on the Cup CL's with a clip? Regulations?

Un-German in that it's not very practical or efficient - very German in that it's over engineered for no reason. Marketing and sales will do this to engineers I think at Porsche I won't get into what the accountants do to the engineers.

[teabagger]

Carl_Docklands said:

teabagger said:

Carl_Docklands said:

teabagger said:

I've been using my datsun a fair bit on track. I've not had a wheel fall off and the dealers don't have to replace the hubs. Nice.

No, they just replace your gearbox

I dont believe nissan have had a recall on the g/boxes. Mine is fine.

I will be giving 911's a wide berth, an alloy wheel flying off is best avoided!

Take care.

Its ok mate, the wheel will be flying off long after you have boiled your transmission fluid

Ive no problems with transmission oil temps either.

Does your car have the centre locks? If so, is it booked in to be checked over?

Stay safe

[911F]

Does this also affect the Centre Locks on the 997 Carrera GTS and 997 Turbo?

[herebebeasties]

Mr2Mike said:

Does your bike weigh nearly 1400kg, develop almost 400bhp and is able to put over 1G of cornering force laterally into the wheel?

Maybe not, but it only has one rear wheel. ;-)

600Nm is an *awful* lot of torque. Standard wheel nuts are usually spec'ed at about 100ish.

[rejn]

DiscoColin said:

Tango13 said:

Do the wheel nuts have L/H and R/H threads depending on which side of the car they're fitted and do they have locking springs?

No. They are not handed like proper motorsport centre locks (I believe that the ones on the Carrera GT are though). On the GT3 there are (IIRC) 5 pieces to the nut alone and there is a proscribed regime for periodic dismantling and re-greasing with aluminium paste. They also have a separate spring loaded internal locking device, just to keep things as complicated as possible. The only real purposes that they serve are marketing and aesthetics.

Really? I'm a complete novice in this topic, but I thought I'd seen blue one one side and red on the other side of the car - and I'd assumed that the colouring was to ensure that some numpty didn't try to fit the wrong way thread on? Am I mistaken?

[Carl_Docklands]

teabagger said:

Carl_Docklands said:

teabagger said:

Carl_Docklands said:

teabagger said:

I've been using my datsun a fair bit on track. I've not had a wheel fall off and the dealers don't have to replace the hubs. Nice.

No, they just replace your gearbox

I dont believe nissan have had a recall on the g/boxes. Mine is fine.

I will be giving 911's a wide berth, an alloy wheel flying off is best avoided!

Take care.

Its ok mate, the wheel will be flying off long after you have boiled your transmission fluid

Ive no problems with transmission oil temps either.

Does your car have the centre locks? If so, is it booked in to be checked over?

Stay safe

Yes i have them and i would reckon theres about 500 cars in the uk with them. Strange that only a specific model is in the recall. Not received a letter yet, the turbo and turbo s probably use different nuts and bolts. The cars affected look like track slags and Porsche will probably swap the turbo and gts ones under the radar at the 2 year service intervals.

Bit of a choker if all the garages need to upgrade their torque wrenches to 600nm though.

Edited by Carl_Docklands on Wednesday 19th December 08:39

[STiG911]

rejn said:

Really? I'm a complete novice in this topic, but I thought I'd seen blue one one side and red on the other side of the car - and I'd assumed that the colouring was to ensure that some numpty didn't try to fit the wrong way thread on? Am I mistaken?

The Carrera GT has 2 Blue and 2 Red Centre-Lock nuts, as they're 'handed' for a specific side of the car.

[rejn]

teabagger said:

Carl_Docklands said:

teabagger said:

Carl_Docklands said:

teabagger said:

I've been using my datsun a fair bit on track. I've not had a wheel fall off and the dealers don't have to replace the hubs. Nice.

No, they just replace your gearbox

I dont believe nissan have had a recall on the g/boxes. Mine is fine.

I will be giving 911's a wide berth, an alloy wheel flying off is best avoided!

Take care.

Its ok mate, the wheel will be flying off long after you have boiled your transmission fluid

Ive no problems with transmission oil temps either.

Does your car have the centre locks? If so, is it booked in to be checked over?

Stay safe

I'd say it's 1-0 to Carl_Docklands on this one. But I'll keep watching... I sense there is more to come.

[sisu]

Gotta wonder WTF goes on at Porsche, they don't want punters fitting tyres unless it is thru the Porki dealer, how do you do that? Have a nut that no one would have and because it is a centre lock you need to man up and put 600nm on that muthafukka.
This centre lock nut says - I always be at the ring like a Porsche Cup car cause thats how I roll..

The irony is that you can't change the tyres at the track for any track specific tyres such as wet weather or semi slick ones. You have to have to wait until the sun is shining and drive all the way there and drive gently - no drifting or silly stuff because if you shred a tyre you are stuck. Then drive to your Porsche Dealer who will charge you an arm and a leg for the tyre that you have to fit otherwise your resale will go down as those aren't the ones fitted by the almighty.

[P4ROT]

rejn said:

teabagger said:

Carl_Docklands said:

teabagger said:

Carl_Docklands said:

teabagger said:

I've been using my datsun a fair bit on track. I've not had a wheel fall off and the dealers don't have to replace the hubs. Nice.

No, they just replace your gearbox

I dont believe nissan have had a recall on the g/boxes. Mine is fine.

I will be giving 911's a wide berth, an alloy wheel flying off is best avoided!

Take care.

Its ok mate, the wheel will be flying off long after you have boiled your transmission fluid

Ive no problems with transmission oil temps either.

Does your car have the centre locks? If so, is it booked in to be checked over?

Stay safe

I'd say it's 1-0 to Carl_Docklands on this one. But I'll keep watching... I sense there is more to come.

was just thinking the same thing lol

[teabagger]

rejn said:

teabagger said:

Carl_Docklands said:

teabagger said:

Carl_Docklands said:

teabagger said:

I've been using my datsun a fair bit on track. I've not had a wheel fall off and the dealers don't have to replace the hubs. Nice.

No, they just replace your gearbox

I dont believe nissan have had a recall on the g/boxes. Mine is fine.

I will be giving 911's a wide berth, an alloy wheel flying off is best avoided!

Take care.

Its ok mate, the wheel will be flying off long after you have boiled your transmission fluid

Ive no problems with transmission oil temps either.

Does your car have the centre locks? If so, is it booked in to be checked over?

Stay safe

I'd say it's 1-0 to Carl_Docklands on this one. But I'll keep watching... I sense there is more to come.

Whilst I have enjoyed the discussion, I dont feel its right to hold Carl_Docklands any longer while he has this serious and potentially dangerous defect with his car.
I recommend he heads straight to a porsche dealer to have his nuts checked.

[IAJO]

teabagger said:

Whilst I have enjoyed the discussion, I dont feel its right to hold Carl_Docklands any longer while he has this serious and potentially dangerous defect with his car.
I recommend he heads straight to a porsche dealer to have his nuts checked.

1-0 in quips but teabagger is still winning 4-3 on wheel count.

[Twoshoe]

STiG911 said:

The Carrera GT has 2 Blue and 2 Red Centre-Lock nuts, as they're 'handed' for a specific side of the car.

Triumph Spitfires with wire wheels used to have 'handed' lock-nuts ('knock-off hubs' I think they were called then). Took me and a mate ages to work out why we couldn't get the wheels off on one side!

Torque of the nuts was not quite so important though, as I seem to recall the car was marginally less powerful than the Porsche.

[LaurasOtherHalf]

http://www.youtube.com/watch?v=4oboxnQwEg4&fea...

The other video appears to have been taken down:
http://bridgetogantry.com/2/index.php/home/amusing...

[Ti22]

Watching that, knowing a wheel was about to fall off was making me shiver!

[Donkey62]

I owned several cars with centre lock wheels and have to say i have no sympathy on basis centre lock nuts are consumable items just like spark plugs, sometimes they go forever often they don't.

[Mr2Mike]

herebebeasties said:

Maybe not, but it only has one rear wheel. ;-)

600Nm is an *awful* lot of torque. Standard wheel nuts are usually spec'ed at about 100ish.

But there are 5 normal wheel wheel nuts to clamp the wheel to the hub, and only one center lock nut.

[Fury1630]

<mutters> A-Class falls over in moose test due to bad suspension - early TTs flip over due to bad aerodynamics - Porsche wheels fall off when used s intended <mutters off>

You don't need to tell me about German engineering - the south downs are littered with it.

[DiscoColin]

Donkey62 said:

I owned several cars with centre lock wheels and have to say i have no sympathy on basis centre lock nuts are consumable items just like spark plugs, sometimes they go forever often they don't.

We aren't talking about the nuts as consumables though. We are talking about the entire wheel hub assembly as a consumable, and one for which components need to be replaced at less that a full endurance race distance. On a road car.

[FactoryPilot]

On Porsche Cup cars the nuts are torqued to circa 450nm, so why does a road car (that occasionally gets used on track) need 600nm? Seems bonkers to me.

And if anyone recalls, one day we were all driving around with 500nm of torque on our nuts, then suddenly in a knee-jerk reaction, Porsche call in a recall and change all the nuts (which I believe the only difference is the absence of the '500nm' lettering) and tightens them up another 100nm...

Surely adding an extra 20% of torque to the hubs, literally overnight, can't be doing the hubs much good?