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crash7
Montreal


Joined: 28 May 2011
Posts: 517



PostPosted: Mon Nov 19, 2018 10:14 am    Post subject: 997 Stone Guards - Yellow Tinge! Reply with quote

My original stone guards are beginning to take on a very slight yellow tinge and although in good physical condition, this bug me and I intend to change them.

I would use the Porsche items again, however are there any better options on the market that will not yellow going forward?

With the advancement in PPF has anyone gone down the road of stone guards made by a PPF company? Does PPF yellow in time?

Any info appreciated
 
  
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FZP
Magny-Cours


Joined: 18 Jan 2015
Posts: 2708
Location: Cheshire


PostPosted: Mon Nov 19, 2018 11:09 am    Post subject: Reply with quote

The yellowing would probably be the oxidisation on the top layer.
, similar to headlights. Have you tried polish on them to cut through the oxidisation?
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997.2 Carrera 2S GT Silver/Cocoa.
 
  
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GlenB
Newbie


Joined: 20 Jul 2018
Posts: 45



PostPosted: Mon Nov 19, 2018 1:28 pm    Post subject: Reply with quote

I recently had Xpel installed to my car and they redid the stone guards with PPF and doubled the PPF up in that area.

Apparently Xpel are now manufacturing the stone guards for Porsche this is due to the yellowing problems that Porsche have had with the 3m manufactured ones so maybe contact your local Xpel dealer.
 
  
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-- 997 --
Suzuka


Joined: 11 Jun 2015
Posts: 1119



PostPosted: Mon Nov 19, 2018 5:05 pm    Post subject: Reply with quote

Taking the stone guards off you need a heat steamer which softens the glue behind the stone guard, pix bellow.... done mibe recently cos of yellowing, decided to go for black but the texture feels rough and slightly thicker than standard! I suggest take them off and fit new ones..

To take the stone guard, have to do it in a certain way otherwise you will be ripping a patch of paint of the body work !!!

J
 



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TonyC911
Monza


Joined: 06 Jun 2016
Posts: 245
Location: High Wycombe, Bucks


PostPosted: Mon Nov 19, 2018 8:38 pm    Post subject: Re: 997 Stone Guards - Yellow Tinge! Reply with quote

crash7 wrote:
My original stone guards are beginning to take on a very slight yellow tinge and although in good physical condition, this bug me and I intend to change them.

I would use the Porsche items again, however are there any better options on the market that will not yellow going forward?


How long have they been on the car before yellowing?

I replaced mine recently and it has made a noticeable difference (in that they are now less visible!) for only a small outlay, about £45 I think. I got mine from Prestige Parts on fleabay and they make these claims:
    200 micron thick clear gloss high density polyurethane material specifically designed for automotive paint protection
    Computer cut to exact size and shape of the factory original parts
    UV resistant - will not discolour or turn "yellow"


Only time will tell if these live up to their claims Wink
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2005 Boxster S
2003 Boxster 2.7
1998 Boxster 2.5
 



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John H
Nürburgring


Joined: 13 Sep 2011
Posts: 413
Location: Cheshire

2011 Porsche 997 Carrera GTS

PostPosted: Fri Nov 23, 2018 6:02 pm    Post subject: Reply with quote

Black stone guards have always been the way to go... Thumb
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