Menu toggle

Hot!Central locking nut corrosion

Author
DrSimon
PCGB Member
  • Total Posts : 229
  • Joined: 2016/06/23 04:48:04
  • Status: offline
DrSimon PCGB Member
2017/06/29 23:04:04 (permalink)

Central locking nut corrosion

Hi all,
As an owner of a 997.2 turbo I must apologise for jumping onto the 991 board. This invasion will hopefully become clear in a second. 
 
I've just bought my turbo, which has the 19 inch RS central lock wheels. As more 991 cars are now being fitted with these I thought this forum area might be a better place to seek advice. Unfortunately, the central lock nuts have all corroded, possibly due to corrosive wheel cleaning fluid in the past. I've been told by Porsche East London that it will cost over £1k to replace these, which seems a ludicrous amount of money. I'm guessing I'm not the only one to experience this problem. I'm wondering if it's possible to get the nuts refurbished, by a wheel refurbisher, like Lepsons for example. However, due to the massive amount of torque required to secure the wheels I'm thinking that any refinishing would simply be removed when I have new tyres fitted. My wheel nuts are the bare metal variety, not the black ones I've seen. 
 
Any thoughts on how to get them looking new again?
 
simon 

"The journey is the destination" (Dan Eldon)
___________________________
Boxster 987 S, 997.1 C4S cab, 997.2 Turbo cab

9 Replies Related Threads

    Geoff997
    PCGB Member
    • Total Posts : 2667
    • Joined: 2005/01/28 21:02:30
    • Status: offline
    Geoff997 PCGB Member
    Re: Central locking nut corrosion 2017/06/30 14:00:48 (permalink)
    Nice new red ones here:
    http://www.carnewal.com/products/P97Turbo/p97114/Red-Center-Lock-Wheel-Nuts
    Assume same as 991, would need to verify.

    Geoff
    "Ich bin als RO zuruckgetreten und jetzt geniesse ich eine wohlverdiente Ruhe."
    2010 997 GT3
    Previously;
    2005 997 Carrera S Hamann
    1986 911 Carrera SSE
    DrSimon
    PCGB Member
    • Total Posts : 229
    • Joined: 2016/06/23 04:48:04
    • Status: offline
    DrSimon PCGB Member
    Re: Central locking nut corrosion 2017/07/03 18:23:24 (permalink)
    Hi Geoff,
    Thanks for that. I wish I could find the bare metal versions, although I'm sure red would look rather sexy on the silver wheels. I've been checking out other people's centre lock nuts (I'm sure I'll be locked up for it at some point) and I notice that many of them are missing paint. I suspect the paint simply doesn't hold up under the massive amount of torque necessary to keep the wheels in place.
    Simon

    "The journey is the destination" (Dan Eldon)
    ___________________________
    Boxster 987 S, 997.1 C4S cab, 997.2 Turbo cab
    Lancerlot
    PCGB Member
    • Total Posts : 5023
    • Joined: 2006/07/01 19:15:18
    • Status: offline
    Lancerlot PCGB Member
    Re: Central locking nut corrosion 2017/07/03 21:04:54 (permalink)
    It's unclear where the corrosion is, but I assume it is on the outer exposed areas rather than the mating wheel clamping surfaces, but if the latter, then discard them right away.
     
    In Porsche parlance, they're actually called bolts and are not one piece units but an assembly of components capable of being dissembled, leaving the bare alloy bolt that can be refinished, but this should only be carried by a specialist engineer, following crack testing and taking the utmost care.
     
    To state the BO (bleedin' obvious ), they're critical to safety and shouldn't be compromised. Better to spend a grand on new bolts than a lifetime in regret  - and don't forget your PCGB discount!
     
    Here's an article found in the Members Only Section, Technical Articles of 997 Register that may be of some help to you. https://www.porscheclubgb.com/forum/tm.aspx?m=804343
     
    You are fortunate to be enjoying ownership of a wonderful, ultra high performance sports car, but it needs to be kept in tiptop mechanical condition.
     
    Regards,
     
    Clive
     
     
    post edited by Lancerlot - 2017/07/03 21:06:21

    The older I get - the faster I was!
    Past - 924T, '911 SC, 911 C, 911 C2, 964, 996, 996TT, 997TT, 997GT2, 430 Scuderia, 997TT, 997TTS. Current -Macan S, 991.2 TTS
    DrSimon
    PCGB Member
    • Total Posts : 229
    • Joined: 2016/06/23 04:48:04
    • Status: offline
    DrSimon PCGB Member
    Re: Central locking nut corrosion 2017/07/04 20:18:25 (permalink)
    Hi Clive,
    Thanks for the advice. It may be divine providence but I decided to take a quick spin in the car this morning and found I had a dirty great nail in my rear nearside tyre (only three months old - ouch!). I limped the car into Porsche east London this afternoon where they'll fit a new tyre and check the wheels too.
    Simon

    "The journey is the destination" (Dan Eldon)
    ___________________________
    Boxster 987 S, 997.1 C4S cab, 997.2 Turbo cab
    DaveyGTS
    Guest of the Club
    • Total Posts : 3
    • Joined: 2019/07/11 09:28:35
    • Status: offline
    DaveyGTS Guest of the Club
    Re: Central locking nut corrosion 2019/07/11 10:51:37 (permalink)
    Just refurbed mine... bit tricky to strip but now look A1.... not painted.... anodized
    Shortshift
    PCGB Member
    • Total Posts : 30
    • Joined: 2004/06/19 13:56:09
    • Status: offline
    Shortshift PCGB Member
    Re: Central locking nut corrosion 2019/07/12 17:30:07 (permalink)
    Oh - refurbing by anodising; that's interesting, Davey. Can you provide some more details?  And have you been able to 'reproduce' the lettering and markings as per the original bolts (nuts)?
     
    James
    DrSimon
    PCGB Member
    • Total Posts : 229
    • Joined: 2016/06/23 04:48:04
    • Status: offline
    DrSimon PCGB Member
    Re: Central locking nut corrosion 2019/07/12 22:16:50 (permalink)
    Eventually I took to them with wire wool (very, very carefully) and they came up sparkling. They've remained that way for the last couple of years, so as I originally suspected, corrosive wheel cleaner must have been used at some point.
    Simon

    "The journey is the destination" (Dan Eldon)
    ___________________________
    Boxster 987 S, 997.1 C4S cab, 997.2 Turbo cab
    DaveyGTS
    Guest of the Club
    • Total Posts : 3
    • Joined: 2019/07/11 09:28:35
    • Status: offline
    DaveyGTS Guest of the Club
    Re: Central locking nut corrosion 2019/07/17 23:30:38 (permalink)
    Stripped and anodized mine ...they look new

    Attached Image(s)

    DaveyGTS
    Guest of the Club
    • Total Posts : 3
    • Joined: 2019/07/11 09:28:35
    • Status: offline
    DaveyGTS Guest of the Club
    Re: Central locking nut corrosion 2019/07/17 23:40:04 (permalink)
    I've had mine anodized..  you can have any colour... stripping them is a little tricky but the results are amazing
    Jump to:

    Posts made and opinions expressed are those of the individual forum members

    Use of the Forum is subject to the Terms and Conditions

    Disclaimer

    The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. The Club assumes no responsibility for any effects arising from errors or omissions.

    Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible.

    When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. Information can be obtained from the operator or the white pages. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide.

    Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned.

    Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. Members are advised to consult qualified specialists for information, advice and assistance on matters connected with their cars at all times.

    © 2019 APG vNext Commercial Version 4.6