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Ghianightmare
Monza


Joined: 25 Apr 2017
Posts: 173
Location: Dublin


PostPosted: Sun Jun 10, 2018 1:41 pm    Post subject: 996 C4S Front Top Mounts - Consolidating threads Reply with quote

Hi,

I need to replace the front top mount on my 2002 C4S so i went searching on the forum to see if 997 C4S mounts are interchangeable ala C2 models. While there is much discussion, there doesn't seem to be a definitive explicit verdict in any of the threads.

Based on my research from threads on here and the 2010 electronic Porsche parts catalogue, the 996 and 997 C4S mounts while they may look very similar, are not identical and therefore not officially interchangeable.

This is also supported by a comment i read in one of the threads (can't find it now) where someone bought 996 and 997 top mounts and gave them both to Centre Gravity to see if they were the same and CGs comment was that they will fit, but the 997 isn't as adjustable in the 996 or something to that effect.

Also, the 996 parts catalogue lists the C2 997 P/N as interchangeable with the 996 P/N. If the same was correct for the C4S P/N I'm sure it would have been listed in the 996 parts catalogue.

If anyone has any official paperwork to support the interchangeablility i would only be too happy to accept that i am wrong as it will save me a few quid!!!
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2002 Seal Grey C4S
 
  
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Fastlane
Spa-Francorchamps


Joined: 05 Mar 2017
Posts: 344
Location: Truro


PostPosted: Sun Jun 10, 2018 3:29 pm    Post subject: Reply with quote

The fact of the matter is that the 997 C4 top mounts will physically fit a 996 C4, but aren't/weren't designed to fit a 996 and so there is a compromise of adjustability as raised by CG.

I would be 99% confident that no Porsche garage would fit 997 C4 top mounts to a 996 C4 for that reason. Just to clarify the 996 C4, C4S and turbo share the same top mounts.

I bought the Hamburg 996 ones - £120 each.

It's your choice...
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Currently Porsche-less, Ariel Atom 3 310
Past:
2001 Zanzibar Red 996.1 C4
1992 Zermatt Silver 964 turbo
1991 Midnight Blue 964 turbo
1994 Guards Red 968 Sport
1987 Baltic Blue 928 S4 auto
 
  
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Ghianightmare
Monza


Joined: 25 Apr 2017
Posts: 173
Location: Dublin


PostPosted: Sun Jun 10, 2018 8:52 pm    Post subject: Reply with quote

Thanks Fastlane.

I'll most likely go with the Hamburg ones too.
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2002 Seal Grey C4S
 
  
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Ben996
Trainee


Joined: 20 Jan 2015
Posts: 51
Location: Newcastle


PostPosted: Mon Jun 11, 2018 9:38 pm    Post subject: Reply with quote

I deliberated for ages, bought oem 997 C4S mounts and my Indy fitted to my 996 C4S.

Parts looked the same and when fitted the car had new alignment done with no problems all in spec and it drives great.

Glad I went down that route as it saved me about £400.
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Car : 2003 Carrera 4S Meridian / Metropole
 
  
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wasz
Magny-Cours


Joined: 28 Dec 2012
Posts: 2639


1999 Porsche 996 Carrera 2

PostPosted: Tue Jun 12, 2018 10:17 am    Post subject: Reply with quote

I can't see how they can be much different.

The body mount is the same place, the coffin arms are the same length, the hits are the same.

The shocks could be shorter? does 997 run a lower ride height?

This would put the top mounts at a very slightly different angle.

They may also be a slightly different rubber compound.
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My special order Vesuvious Charcoal 996 | Clutch, Fly RMS IMS AOS Job |
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adamw
Estoril


Joined: 09 Jul 2009
Posts: 3786
Location: West Sussex

2002 Porsche 996 Turbo

PostPosted: Tue Jun 12, 2018 10:54 am    Post subject: Reply with quote

Conversation on this recently here :

http://911uk.com/viewtopic.php?t=127283&highlight=

I went for the Hamburg ones and bearings for my 996T from Eporsche and 9e fitted.

Saved a bit on the cost of OEM Porsche 996 units

thumbsup
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02' 996 Turbo Manual Coupe, Seal Grey

EX : 95' 993 C4 Coupe ( Dec 10 - Oct 16 )
EX : 00' 996 C2 Cab ( Jul 09 - Oct 10 )
EX : 03' 986 Boxster S ( May 06 - Dec 08 )
 
  
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lenny
Trainee


Joined: 27 Apr 2013
Posts: 52
Location: Edinburgh


PostPosted: Tue Jun 12, 2018 2:08 pm    Post subject: Reply with quote

I also recently fitted 997 C4S top mounts to my 996 C4S all fitted and adjusted with no problem.
I did fit coffin arms, control arms, (after market) top mount bearings (oe) and Techart lowered springs at the same time and every thing went together perfectly.
The car drives great....and I saved a few quid!!

Go for it.

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