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Maxamplitude
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Joined: 22 Feb 2019
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PostPosted: Fri Feb 22, 2019 1:25 pm    Post subject: Buying a 911 997, IMS Help Reply with quote

Guys looking at purchasing a 911 997 C2 registered Sept 2005, Is there any way of knowing for sure which IMS bearing it has?
The engine number is 68515141

Thanks in advance
Max
 
  
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T8
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Joined: 29 Jun 2010
Posts: 15176
Location: Kent


PostPosted: Fri Feb 22, 2019 1:52 pm    Post subject: Reply with quote

That engine number is 15141 but it follows the design revision number 8.

Design revision 9 was the model that had the latest IMS modification that was done. The change over within that was at engine number 07475 for 3.6 litre cars.

Welcome to 911uk by the way.
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T8
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PostPosted: Fri Feb 22, 2019 2:07 pm    Post subject: Reply with quote

Further to the above the engine number that you would ideally want is one ending 6-9-6-07475 or later.

6 denotes the 6 cylinder engine
9 is the revision number
6 is the model year so 2005/2006 cars
07475 or later = the cars with the latest IMS design
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HSC911
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PostPosted: Fri Feb 22, 2019 2:30 pm    Post subject: Reply with quote

Welcome
 
  
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Maxamplitude
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Joined: 22 Feb 2019
Posts: 12



PostPosted: Fri Feb 22, 2019 10:16 pm    Post subject: Oh No Reply with quote

Thanks guys its a 3.8 I planned to view but may wait until a later car becomes available, any idea what year of manufacture the 3.8 has the revised IMS?
Max
 
  
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pzero
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PostPosted: Fri Feb 22, 2019 10:26 pm    Post subject: Re: Oh No Reply with quote

Maxamplitude wrote:
Thanks guys its a 3.8 I planned to view but may wait until a later car becomes available, any idea what year of manufacture the 3.8 has the revised IMS?
Max


http://www.911uk.com/viewtopic.php?t=119108&sid=7d1a933ac0751eaa48bcbcab052a5ecf
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T8
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PostPosted: Sat Feb 23, 2019 12:52 am    Post subject: Re: Buying a 911 997, IMS Help Reply with quote

Maxamplitude wrote:


Guys looking at purchasing a 911 997 C2 registered Sept 2005, Is there any way of knowing for sure which IMS bearing it has?

The engine number is 68515141



If this is a 3.8 engine it has the latest IMS bearing.

The cross-over for the 'S' car was

6
8
5
0970

so

6
8
5
15141

would be ok. Thumb
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alex yates
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 15543
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Sat Feb 23, 2019 1:06 am    Post subject: Reply with quote

All irrelevant. If it goes pop I'll buy you a Turbo.
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Phil 997
Le Mans
Le Mans


Joined: 05 Dec 2015
Posts: 15061
Location: Bournemouth,Dorset

2009 Porsche 997 Carrera 4S

PostPosted: Sat Feb 23, 2019 1:29 am    Post subject: Reply with quote

I think others have posted the info but here it is just in case Thumb

Last IMS revision before no IMS (Gen2 MA1 block):

997 Carrera 3.6 with engine numbers from M96/0569507475 are the new IMS design.

M96/05 = 997 3.6 Carrera NA
6 = 6 cylinders
9 = design revision
5 = year (2005)
07475 = cumulative production serial

This means some MY2005 benefit and all MY2006 onwards benefit.


997 Carrera S 3.8 with engine numbers from M97/0168509790 are the new IMS design.

M97/01 = 997 3.8 Carrera NA
6 = 6 cylinders
8 = design revision
5 = year (2005)
09790 = cumulative production serial

This means some MY2005 benefit and all MY2006 onwards benefit.
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Jake911
Silverstone


Joined: 04 Nov 2017
Posts: 103



PostPosted: Sun Feb 24, 2019 12:16 pm    Post subject: Re: Buying a 911 997, IMS Help Reply with quote

Great info - Thx for posting
 
  
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Basalt911
Newbie


Joined: 12 Feb 2019
Posts: 17



PostPosted: Wed Mar 06, 2019 6:08 pm    Post subject: Reply with quote

argh, for some reason I misread the engine number previously and smugly told myself that mine had the newer IMS

looking again, I realise it hasn't, so I'm back to reminding myself about the options for those of us that are 'less endowed' in the IMS department

at 93k miles, with a healthy clutch, and a magnetic sump plug (which is examined annually and shows no swarf at service) what would the considered wisdom advise?

stick or twist?
 
  
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villaman
Newbie


Joined: 05 Mar 2019
Posts: 27
Location: North Staffordshire


PostPosted: Fri Mar 08, 2019 4:34 pm    Post subject: Reply with quote

Phil 997 wrote:
I think others have posted the info but here it is just in case Thumb

Last IMS revision before no IMS (Gen2 MA1 block):

997 Carrera 3.6 with engine numbers from M96/0569507475 are the new IMS design.

M96/05 = 997 3.6 Carrera NA
6 = 6 cylinders
9 = design revision
5 = year (2005)
07475 = cumulative production serial

This means some MY2005 benefit and all MY2006 onwards benefit.


997 Carrera S 3.8 with engine numbers from M97/0168509790 are the new IMS design.

M97/01 = 997 3.8 Carrera NA
6 = 6 cylinders
8 = design revision
5 = year (2005)
09790 = cumulative production serial

This means some MY2005 benefit and all MY2006 onwards benefit.


Hi Phil,

So if I may please confirm for the avoidance of doubt,

The below engine (3.6) number would have the later and larger IMS ?

69508806
 
  
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T8
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PostPosted: Fri Mar 08, 2019 4:44 pm    Post subject: Reply with quote

695 08806 is after 695 07475 so will have the latest IMS bearing.
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villaman
Newbie


Joined: 05 Mar 2019
Posts: 27
Location: North Staffordshire


PostPosted: Fri Mar 08, 2019 5:30 pm    Post subject: Reply with quote

T8 wrote:
695 08806 is after 695 07475 so will have the latest IMS bearing.


Thanks T8
 
  
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Phil 997
Le Mans
Le Mans


Joined: 05 Dec 2015
Posts: 15061
Location: Bournemouth,Dorset

2009 Porsche 997 Carrera 4S

PostPosted: Fri Mar 08, 2019 7:21 pm    Post subject: Reply with quote

Sorry Viilaman I am a bit late relying but looks like Terry has confirmed for you its the newer better IMS Thumb Thumb
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Phil 997
Le Mans
Le Mans


Joined: 05 Dec 2015
Posts: 15061
Location: Bournemouth,Dorset

2009 Porsche 997 Carrera 4S

PostPosted: Fri Mar 08, 2019 7:25 pm    Post subject: Reply with quote

Basalt911 wrote:
argh, for some reason I misread the engine number previously and smugly told myself that mine had the newer IMS

looking again, I realise it hasn't, so I'm back to reminding myself about the options for those of us that are 'less endowed' in the IMS department

at 93k miles, with a healthy clutch, and a magnetic sump plug (which is examined annually and shows no swarf at service) what would the considered wisdom advise?

stick or twist?


If it hasn't gone bang in 93,000 miles and your doing the correct risk reducing maintenance drive it and enjoy it :thumb:and dont mess with whats not broke , seems to be the general advise given at that mileage
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villaman
Newbie


Joined: 05 Mar 2019
Posts: 27
Location: North Staffordshire


PostPosted: Fri Mar 08, 2019 7:31 pm    Post subject: Reply with quote

Phil 997 wrote:
Sorry Viilaman I am a bit late relying but looks like Terry has confirmed for you its the newer better IMS Thumb Thumb


Thank you Phil

It seemed a fairly simple math ...but just wanted to make sure....
 
  
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resigner
Suzuka


Joined: 19 Dec 2013
Posts: 1194



PostPosted: Fri Mar 08, 2019 7:43 pm    Post subject: Reply with quote

Phil 997 wrote:
Basalt911 wrote:
argh, for some reason I misread the engine number previously and smugly told myself that mine had the newer IMS

looking again, I realise it hasn't, so I'm back to reminding myself about the options for those of us that are 'less endowed' in the IMS department

at 93k miles, with a healthy clutch, and a magnetic sump plug (which is examined annually and shows no swarf at service) what would the considered wisdom advise?

stick or twist?


If it hasn't gone bang in 93,000 miles and your doing the correct risk reducing maintenance drive it and enjoy it :thumb:and dont mess with whats not broke , seems to be the general advise given at that mileage


Or it's already been changed, which at 93,000 miles I would of thought it had been, as it must of had at least 1 new clutch by now......

Now, OP, you said "Guys looking at purchasing a 911 997 C2" and that would be a 3.6 litre car, because a 3.8 would be a C2S..........
 
  
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T8
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Posts: 15176
Location: Kent


PostPosted: Sat Mar 09, 2019 12:36 pm    Post subject: Reply with quote

resigner wrote:


Now, OP, you said "Guys looking at purchasing a 911 997 C2" and that would be a 3.6 litre car, because a 3.8 would be a C2S..........



The OP (maxamplitude) later corrected himself and confirmed it was an S he was looking to view.

He has since bought it.

See --> http://911uk.com/viewtopic.php?t=132591&start=0&postdays=0&postorder=asc&highlight=
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Jake911
Silverstone


Joined: 04 Nov 2017
Posts: 103



PostPosted: Sat Mar 09, 2019 4:41 pm    Post subject: Reply with quote

Basalt911 wrote:
argh, for some reason I misread the engine number previously and smugly told myself that mine had the newer IMS

looking again, I realise it hasn't, so I'm back to reminding myself about the options for those of us that are 'less endowed' in the IMS department

at 93k miles, with a healthy clutch, and a magnetic sump plug (which is examined annually and shows no swarf at service) what would the considered wisdom advise?

stick or twist?


I have a lovely 997.1 that would be considered 'at risk' given the older IMS bearing. The bores were checked and all is good. I never go above 3000 rpm until the oil is at 90 or above. I have just gone over 30,000 miles and I have no concern or worries. I have annual oil changes with an annual mileage of around 4000 per yer year. Its often been said that this issue affects less the 5% of cars. Do your due diligence, maintenance and enjoy.
 
  
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