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Shurv
Kyalami


Joined: 09 Jan 2013
Posts: 1751
Location: Northampton


PostPosted: Mon Nov 04, 2019 2:18 pm    Post subject: heatshield bolt size Reply with quote

Does anyone know what the bolt size is for 3.6 heatshields. Mine are rusty and rattling, and I'm sure they will be a pain to get off. I want to replace the bolts with either stainless or titanium, which is the recommended option? Thanks.
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996 C4S Arctic Silver Black leather
 
  
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heed
Trainee


Joined: 24 Jan 2019
Posts: 71



PostPosted: Mon Nov 04, 2019 3:11 pm    Post subject: Reply with quote

I seem to recall that with a couple on mine that had sheared or the shield has corroded away we fixed it with a self tapper and a washer. Or maybe we used the original hole with a washer on a new screw.
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'04 996 C4S, arctic silver, graphite grey
 
  
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maldren
Suzuka


Joined: 07 Oct 2016
Posts: 1179



PostPosted: Mon Nov 04, 2019 4:59 pm    Post subject: Reply with quote

Did mine this weekend, 6mm (10mm head). I reused the original bolts as they were ok (unlike the heat shields).

Sorry, didn't measure the length. They also have large diameter 'washer' faces which are larger than the bolt head size, to spread the load.

They were fairly easy to get off but I had them off in the recent past to fit new coil packs, I used a 1/4" ratchet socket. For the rear LH one, you need a bit of 'extra length' so I used a short extension.
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Mike
2003 996.2 C2 Coupe Arctic Silver
 
  
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Shurv
Kyalami


Joined: 09 Jan 2013
Posts: 1751
Location: Northampton


PostPosted: Tue Nov 05, 2019 3:26 pm    Post subject: Reply with quote

Thanks for the replies. Interesting that you were able to use the old bolts. I need to start spraying them with penetrating oil. thumbsup
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maldren
Suzuka


Joined: 07 Oct 2016
Posts: 1179



PostPosted: Tue Nov 05, 2019 5:32 pm    Post subject: Reply with quote

It's a bit oily where mine live so the come out ok!
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2003 996.2 C2 Coupe Arctic Silver
 
  
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AndyH
Newbie


Joined: 06 Dec 2017
Posts: 8



PostPosted: Tue Nov 05, 2019 9:04 pm    Post subject: Reply with quote

I have literally just looked at this because the heat shields were missing on the car I have just bought. The bolts are M6x16. Screwfix do a bag of 10 in stainless steel for £1.39 and I am going to add penny washers to help spread the load.
 
  
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 17006
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Tue Nov 05, 2019 10:17 pm    Post subject: Reply with quote

Just bin them. Never had any on mine and it keeps the coil packs nice and dry and gives you greater access round that area.
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2000 Manual 996 C4 Arctic Silver Convertible


 
  
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Shurv
Kyalami


Joined: 09 Jan 2013
Posts: 1751
Location: Northampton


PostPosted: Wed Nov 06, 2019 5:17 pm    Post subject: Reply with quote

Alex, so what purpose do they serve then? Interesting that you don't have any fitted to yours.
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 17006
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Wed Nov 06, 2019 5:33 pm    Post subject: Reply with quote

Well I guess the idea is to stop them baking the coil packs and leads, but I've never had them on mine in 6 years+ and they haven't seemed to cause any problem. Dont know

Just seem to get in folks way if you ask me. I always wondered why it took people so long to change their plugs and struggle getting them out when I could do it in half an hour.
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