'06 S owners - what's your engine number and production date?
02-17-2012, 07:25 PM
#46
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My conclusion, from the data I've obtained, is that any non-X51 M97 engine in a car with a production date after December 2004 should have the upgraded IMS. That would include the 2nd half of MY2005 cars, and ALL of MY2006 cars.
This conclusion stems from 3 assumptions:
1) Engine #M97/016859791 is the first M97 with the upgraded IMS.
2) All cars with production dates after the first IMS upgrade ALSO got an upgraded IMS engine.
3) My guess that MY05 engine 9791 appeared in a December 2004 production car is correct.
Now if we could just find the production dates of the '05 S cars that grenaded, we can see if they generally fit my hypothesis.
- Mike
This conclusion stems from 3 assumptions:
1) Engine #M97/016859791 is the first M97 with the upgraded IMS.
2) All cars with production dates after the first IMS upgrade ALSO got an upgraded IMS engine.
3) My guess that MY05 engine 9791 appeared in a December 2004 production car is correct.
Now if we could just find the production dates of the '05 S cars that grenaded, we can see if they generally fit my hypothesis.
- Mike
02-17-2012, 11:04 PM
#47
Rennlist Member
Thread Starter
Very possible Alex. I'm just extrapolating based on what data I have on-hand. I wouldn't be surprised if at least one of my assumptions is wrong!
But I'd like to get as much data as possible so we can find the real answer.
But I'd like to get as much data as possible so we can find the real answer.
02-17-2012, 11:10 PM
#48
I think the one assumption that is questionable is your estimate of Dec. '04 as the switch over month, which was based on MY06 engine numbers. To have a more accurate estimate, you really need to poll MY05 owners.
There was one report by member MLindgren that his MY05, built in April '05, had the newer robust IMS of the MY06+ cars. He was going to have the LN engineering retrofit done as part of a clutch replacement, but found his engine had the newer bearing. So that's one data point that indicates the switch may have occurred prior to April '05.
OTOH, while much more rare, MY06-08 engines are not 100% immune. For example, I've seen one report by user dadeo that his MY07 997 had an IMS failure.
There was one report by member MLindgren that his MY05, built in April '05, had the newer robust IMS of the MY06+ cars. He was going to have the LN engineering retrofit done as part of a clutch replacement, but found his engine had the newer bearing. So that's one data point that indicates the switch may have occurred prior to April '05.
OTOH, while much more rare, MY06-08 engines are not 100% immune. For example, I've seen one report by user dadeo that his MY07 997 had an IMS failure.
02-17-2012, 11:19 PM
#49
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Thread Starter
If Mr. Palmbeacher could get back to us with his engine number, that would do a lot to help us find our answer. His build date is 01/05, so his engine number could be close to the cut-line. Once we get that, we can use the 2000 cars/month assumption to find the right month for engine #68659791.
02-17-2012, 11:41 PM
#50
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I think based on what I'm reading, I'm after the switch. I'll add my data to help your database.
C2S, Build date 06/05 and engine number M97/0168515572
And based on the following chart that I copied from post #11, I probably have one of the last '05s before the switchover due to my June 05 build date.
"PS - by my calculations, that 9791st MY 2005 M97 engine is probably in an '05 S chassis with a production date in December 04/January 05.
Here's the data -
For MY2006:
Engine # -- Chassis production date
03833 -- 08/2005
06852 -- 10/2005
14009 -- 02/2006
16022 -- 03/2006
16946 -- 03/2006
This equates to approximately 2000 engines/month, or 22,000 engines/year (since they take August off, right?).
So that puts MY2006 engine 00001 (i.e. 68600001) in a June 2005 chassis. "
C2S, Build date 06/05 and engine number M97/0168515572
And based on the following chart that I copied from post #11, I probably have one of the last '05s before the switchover due to my June 05 build date.
"PS - by my calculations, that 9791st MY 2005 M97 engine is probably in an '05 S chassis with a production date in December 04/January 05.
Here's the data -
For MY2006:
Engine # -- Chassis production date
03833 -- 08/2005
06852 -- 10/2005
14009 -- 02/2006
16022 -- 03/2006
16946 -- 03/2006
This equates to approximately 2000 engines/month, or 22,000 engines/year (since they take August off, right?).
So that puts MY2006 engine 00001 (i.e. 68600001) in a June 2005 chassis. "
02-18-2012, 12:35 AM
#51
Rennlist Member
Thread Starter
That's good data, Doc. Looks like there might have been fewer S cars produced for MY2005 than I originally anticipated. But we won't know for sure until we get more points...
Thanks!
- Mike
Thanks!
- Mike
02-18-2012, 11:46 AM
#53
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If Mr. Palmbeacher could get back to us with his engine number, that would do a lot to help us find our answer. His build date is 01/05, so his engine number could be close to the cut-line. Once we get that, we can use the 2000 cars/month assumption to find the right month for engine #68659791.
02-18-2012, 06:53 PM
#56
I'm trying to do a little math here to figure out approximately when Porsche switched to the beefier IMS bearings in the M97. If I can get a bunch of engine numbers along with their corresponding production dates, I can graph it and see if anything makes sense.
So let me know, S owners. I need some data!
Thanks in advance,
- Mike
So let me know, S owners. I need some data!
Thanks in advance,
- Mike
My CPO documents state, "Engine Number 68640710".
Like my sig says, it's a C4S with the X51 with "Production Completion Date" 12/23/2005.
Which bearing do I have, and more importantly, why is my engine an M96 when most (including at least one X51 described above) here are M97s??
Last edited by docfink; 02-18-2012 at 07:08 PM.
02-18-2012, 07:17 PM
#57
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why it doesn't match the data trend I don't know. The motor has not been out to my knowledge and I have the whole history. Car was bought from holli82 who bought it new, and I am sure he would have disclosed a new motor. receipts and service history do not indicate any motor change either.
02-18-2012, 07:44 PM
#58
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My Certificate of Authenticity says "Engine Type M96/03" (Transmission Type G96/00).
My CPO documents state, "Engine Number 68640710".
Like my sig says, it's a C4S with the X51 with "Production Completion Date" 12/23/2005.
Which bearing do I have, and more importantly, why is my engine an M96 when most (including at least one X51 described above) here are M97s??
My CPO documents state, "Engine Number 68640710".
Like my sig says, it's a C4S with the X51 with "Production Completion Date" 12/23/2005.
Which bearing do I have, and more importantly, why is my engine an M96 when most (including at least one X51 described above) here are M97s??
02-18-2012, 08:29 PM
#59
My Certificate of Authenticity says "Engine Type M96/03" (Transmission Type G96/00).
My CPO documents state, "Engine Number 68640710".
Like my sig says, it's a C4S with the X51 with "Production Completion Date" 12/23/2005.
Which bearing do I have, and more importantly, why is my engine an M96 when most (including at least one X51 described above) here are M97s??
My CPO documents state, "Engine Number 68640710".
Like my sig says, it's a C4S with the X51 with "Production Completion Date" 12/23/2005.
Which bearing do I have, and more importantly, why is my engine an M96 when most (including at least one X51 described above) here are M97s??
02-18-2012, 08:31 PM
#60
it's hard to see, but my engine # is correct at 69640929.
why it doesn't match the data trend I don't know. The motor has not been out to my knowledge and I have the whole history. Car was bought from holli82 who bought it new, and I am sure he would have disclosed a new motor. receipts and service history do not indicate any motor change either.
why it doesn't match the data trend I don't know. The motor has not been out to my knowledge and I have the whole history. Car was bought from holli82 who bought it new, and I am sure he would have disclosed a new motor. receipts and service history do not indicate any motor change either.