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love154
Trainee


Joined: 18 Dec 2018
Posts: 51



PostPosted: Fri Mar 29, 2019 2:19 pm    Post subject: Wheel Nuts Reply with quote

Just having my car detailed and been to that the wheel nuts have corroded and melted there self to the wheels. I have had to have these sorted but dont want it doing it again. So what wheel nuts should i now get had a look at the stainless. any body no the best place to get them

Thanks

Grant
 
  
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James M-S
Österreich


Joined: 11 Apr 2017
Posts: 909
Location: Derbyshire

2009 Porsche 997 Carrera 2

PostPosted: Fri Mar 29, 2019 2:34 pm    Post subject: Reply with quote

Just put a dab of copper slip on the threads and spray paint the heads is what most people do.

Don’t forget the point of the Porsche crest on your centre cap should point to the valve stem, and if you’re really OCD, the locking wheel bolt should be opposite the valve stem.

Laughing
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Luddite
Monza


Joined: 18 Dec 2018
Posts: 187
Location: Scotland


PostPosted: Fri Mar 29, 2019 4:31 pm    Post subject: Reply with quote

Don`t know what material Porsche use for wheel nuts these days, but SCs were alloy and could give all sorts of problems if the paint was allowed to suffer as the result of heavy handed use of a wheel brace or worse still an air gun. in time the nuts would break up when you tried to undo them...

Went out to the garage where my old car has SS wheel nuts and dug through an old tin of Porsche nuts bolts screws etc to find a wheel nut from one of my SC`s

SC wheel nut weighed in at 18g and the SS nut of similar dimensions weighed in at 47g.. Five nuts per wheel equals an increase in un-sprung weight of ... Question

Something to think about... perhaps not.. Question
 
  
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Gottans
Monza


Joined: 25 Mar 2016
Posts: 235



PostPosted: Fri Mar 29, 2019 5:06 pm    Post subject: Reply with quote

I believe porsche specify aluminium grease rather than copper slip.
 
  
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Paul Farrar
Trainee


Joined: 20 May 2005
Posts: 88
Location: Thruxton, Hants


PostPosted: Fri Mar 29, 2019 5:13 pm    Post subject: Reply with quote

Gottans wrote:
I believe porsche specify aluminium grease rather than copper slip.


And not on the threads either.
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jonno_
Spa-Francorchamps


Joined: 29 May 2014
Posts: 368
Location: Oxfordshire

2005 Porsche 997 Carrera 2S

PostPosted: Fri Mar 29, 2019 5:17 pm    Post subject: Reply with quote

Indeed. Common issue.
White lithium grease, but NOT on the threads - you'll over-torque otherwise.
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Martian
Sepang


Joined: 18 Mar 2009
Posts: 2913
Location: Bury St. Edmunds

2007 Porsche 997 Turbo

PostPosted: Fri Mar 29, 2019 5:22 pm    Post subject: Reply with quote

I bought titanium bolts many years ago from PorscheShop. Obviously no corrosion, a lot lighter and they still look like new. Circa £350 for 20 though.
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P9XX
Newbie


Joined: 04 Oct 2018
Posts: 2
Location: Hertfordshire


PostPosted: Fri Mar 29, 2019 6:32 pm    Post subject: 997.2 Wheel Bolts Reply with quote

Re-painting will give a good appearance upgrade to rusty Original OE bolts.
My bolts are 2 piece items, a steel bolt of 44 mm under the head length with a pressed-in-place aluminium spherical cap which goes between the steel of the bolt and the aluminium wheel. The original finish of the steel part was electro-zinc plated. On my bolts, the aluminium spherical caps were beginning to delaminate down the sides but the 2 thrust surfaces were intact. The cause of the rust on the treated steel and damage to the Ali-caps is most likely due to the effect of wheel / brake dust cleaners, many of which contain phosphoric acid. The acid will quickly remove the few microns of electro-zinc and will also rot aluminium.
To refurb, remove rust from bolt head with a wire brush, preferably on an angle grinder. Mask the threads and ali-spherical cap. Etch Primer the bolt head, when dry, paint with brake caliper silver. I used Halfrauds own products.
About Copaslip or Aluminium based Anti Seize, my cars handbook tells me to use Molub Alloy TA (ali based) on the threads and between the steel bolt head and the aluminium spherical cap but not on the surface which fits against the alloy wheel. Molub Alloy TA is quite difficult to obtain but is sold by BMW Motorcycle dealers and alternatives are available on Fleabay. Search for "Aluminium anti seize".
I considered Stainless Steel replacements but : Wheels, brakes, suspension and steering are all safety critical so decided on refurb.
Hope all this is relevant to your situation.
Stewart.
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basildon993
Hockenheim


Joined: 11 Dec 2008
Posts: 630
Location: Sussex


PostPosted: Fri Mar 29, 2019 7:38 pm    Post subject: Reply with quote

James M-S wrote:

Don’t forget the point of the Porsche crest on your centre cap should point to the valve stem, and if you’re really OCD, the locking wheel bolt should be opposite the valve stem.

Laughing


And if you are really, really OCD make sure that the tyres are rotated around the rims so that the sidewall lettering is in the same position on all wheels! Very Happy
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timbo1811
Trainee


Joined: 13 Dec 2016
Posts: 94
Location: Dorset


PostPosted: Fri Mar 29, 2019 7:39 pm    Post subject: Reply with quote

Copper slip on the threads is ok but not on the seat which I believe is where the friction is achieved to achieve the torque setting. I've done this for 40+ years with out any issues.
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DucatiRob
Albert Park


Joined: 22 Jul 2015
Posts: 1711
Location: Milton Keynes

2006 Porsche 997 Carrera 2S

PostPosted: Fri Mar 29, 2019 8:21 pm    Post subject: Reply with quote

Grease on wheel nuts can of worms Very Happy I think the Porsche advice is a little aluslip on the wheel bolt seat, not on the threads! Copper + Aluminium will lead to galvanic corrosion due to differential materials if there is some moisture present as well. Unlikely to lead to anything catastrophic but better safe than sorry Thumb
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timbo1811
Trainee


Joined: 13 Dec 2016
Posts: 94
Location: Dorset


PostPosted: Fri Mar 29, 2019 8:48 pm    Post subject: Reply with quote

DucatiRob wrote:
Grease on wheel nuts can of worms Very Happy I think the Porsche advice is a little aluslip on the wheel bolt seat, not on the threads! Copper + Aluminium will lead to galvanic corrosion due to differential materials if there is some moisture present as well. Unlikely to lead to anything catastrophic but better safe than sorry Thumb


The handbook says not to put grease on the seat, therefore I assume no risk of any galvanic reaction.
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deMort
Long Beach


Joined: 21 Mar 2015
Posts: 6320
Location: Brighton


PostPosted: Fri Mar 29, 2019 9:03 pm    Post subject: Reply with quote

Major service .. we use a wire wheel to sand off the rust on the bolt head .. we primer then paint the wheel bolt head .

We use ally grease ( silver ) on the threads only .. never get it on the cone .


There are x2 colours of wheel bolts .. silver .. the original and you do them up to 100 ft lb... 130 nm.

The black ones are the new ones .. from memory they are tightened to 112 ft lb .


Silver ones corrode faster than the black ones but in the end they all go rusty .
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DucatiRob
Albert Park


Joined: 22 Jul 2015
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Location: Milton Keynes

2006 Porsche 997 Carrera 2S

PostPosted: Fri Mar 29, 2019 10:02 pm    Post subject: Reply with quote

timbo1811 wrote:


The handbook says not to put grease on the seat, therefore I assume no risk of any galvanic reaction.


I stand corrected
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DucatiRob
Albert Park


Joined: 22 Jul 2015
Posts: 1711
Location: Milton Keynes

2006 Porsche 997 Carrera 2S

PostPosted: Fri Mar 29, 2019 10:03 pm    Post subject: Reply with quote

DucatiRob wrote:
timbo1811 wrote:


The handbook says not to put grease on the seat, therefore I assume no risk of any galvanic reaction.


I stand corrected


But also to grease the threads hence using ali grease rather than copperslip!
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James M-S
Österreich


Joined: 11 Apr 2017
Posts: 909
Location: Derbyshire

2009 Porsche 997 Carrera 2

PostPosted: Fri Mar 29, 2019 10:09 pm    Post subject: Reply with quote

Haha, have a look at how geeky we all are!

We know how to have fun on a Friday night don’t we.....

Floor Floor Floor Floor
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FRZ 911
Österreich


Joined: 19 Jun 2015
Posts: 876
Location: Northern Ireland

2007 Porsche 997 Carrera 4S

PostPosted: Fri Mar 29, 2019 10:15 pm    Post subject: Reply with quote

Martian wrote:
I bought titanium bolts many years ago from PorscheShop. Obviously no corrosion, a lot lighter and they still look like new. Circa £350 for 20 though.


+1 on the titanium bolts. I bought mine last year from a company (Acer Racing) in the USA. No more rust issues. thumbsup
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timbo1811
Trainee


Joined: 13 Dec 2016
Posts: 94
Location: Dorset


PostPosted: Fri Mar 29, 2019 10:27 pm    Post subject: Reply with quote

DucatiRob wrote:
DucatiRob wrote:
timbo1811 wrote:


The handbook says not to put grease on the seat, therefore I assume no risk of any galvanic reaction.


I stand corrected


But also to grease the threads hence using ali grease rather than copperslip!


But bolts go into the hub which is steel so should be ok with copper slip, the bolt seat centers the wheel so I don't think the threads touch the actual wheel.
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kurlykris
Indianapolis


Joined: 30 Jun 2014
Posts: 2343
Location: Warwickshire


PostPosted: Fri Mar 29, 2019 11:04 pm    Post subject: Reply with quote

Sorry, I get really worried when people start using different/incorrect terminology on threads like this Grin

The aluminium grease, a tiny amount, should be applied between the flange bolt surface and the mating spherical seat top surface, then on the threads of the flange bolt, the 2 black arrows ,not on the part that the red line points to on the attached pic Thumb

We don`t want our wheels coming loose chaps nooo


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Magic919
Suzuka


Joined: 05 Jun 2013
Posts: 1051
Location: Berkshire


PostPosted: Sat Mar 30, 2019 7:02 am    Post subject: Reply with quote

deMort wrote:
There are x2 colours of wheel bolts .. silver .. the original and you do them up to 100 ft lb... 130 nm.

The black ones are the new ones .. from memory they are tightened to 112 ft lb .


The black ones are 160Nm and I recall they eventually said that should also be used on the silver ones.
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