28 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH996 engine number
Leading reported evidence
Check work
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
From the Porsche engine build videos on Youtube I'm pretty sure they're quality control stamps, put their by either the builder, or someone that checked the work.
Leading evidence: 'Check work' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check work' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
The shop more than likely installed a suitable used M96.02.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
The shop says they repaired the motor but did not replace.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
The shop more than likely installed a suitable used M96.02.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Check work
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
From the Porsche engine build videos on Youtube I'm pretty sure they're quality control stamps, put their by either the builder, or someone that checked the work.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
Thankfully, you have a serviceable engine in regards to the IMS bearing which means the engine doesn't have to be removed from the car and opened up just to replace the IMS bearing.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
The person that started that company was banned from Rennlist and the fact that you have to use Webarchive to pull up his website tells the whole story.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
28 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T122219Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Anybody know what M96/02s means? This number is on a tab by the oil pan. I know the M96 means it's a 996 engine, but phone calls to dealers, Porsche of North America, and Pelican have yielded nothing on the 02s. This engine supposedly
is a factory crate 996 motor with the X-51 package and came out of Mexico. I cannot find any serial number on it. Any help much appreciated.
[Image-only post; no author-written text. Original image references:]
https://cimg5.ibsrv.net/gimg/rennlist.com-vbulletin/1296x770/screen_shot_2018_03_14_at_7_46_26_pm_970856c51596166df34813371aad379cf7ba9137.png
Serial number is a difficult to see dot matrix on an aluminum lug that is visible from the left side of the car. Bottom of the engine towards the transmission.
https://www.renntech.org/forums/topi...code-location/
The "S" indicates it is the rare x51 engine. When installing the X51 package at the dealership it is required to stamp the "S" at the end of the serial number, if it is after the m96/02 then it is factory installed.I have seen replacement factory crate engines with no serial number before, I think these were ordered through Porsche Motorsport Division. I had one that just had " 996" stamped on it with no serial number. M96/03s (3.6) were available in the US and more common, m96/01s m96/02s and m96/04s (3.4) were not available in the US and are very rare .You have a rare engine indeed, is it for sale?
Thanks much for these helpful replies. The real question behind all this has to do with a buyer for the vehicle (2001 Cab) in which this engine is installed. Buyer wants to know if the IMS bearing is updated. From this thread I gather that the engine itself is 1999 and I'm thinking that the X-51 upgrade probably was added without doing anything to the bearing. That said, the shop that installed the engine in 2013 told me that the case would need to be split if I ever wanted to access the bearing. They also told me they "thought" that the IMS bearing was more recent. I don't have a lot of faith in this shop, but do you guys have any thoughts on the IMS question? Thanks again for the help.
Sounds like there is no credible information on the IMS bearing status. I would assume the worst, in that it has the original Dual Row IMSB which is NOT the one most likely to fail.
I'll take a crack at it. You've got the bank #2 cylinder head part number and then you've got a date "wheel". I can't decode that exactly. If I were to guess, the casting was made on the 23rd day of January (1). Since your car is a 99, there is probably mark near the 9 in the upper right. Might even be in the 9. Hard to tell for sure from the photo.
I'm pretty sure I got the cylinder head part number.
So now, more quizzes. What are these stamp marks? I'm guessing inspection approval at various phases of the assembly process.
From the Porsche engine build videos on Youtube I'm pretty sure they're quality control stamps, put their by either the builder, or someone that checked the work.
That number is the "cast number" and is not the actual "part number" like what is stamped on most Porsche parts. IF you remember, the M96 uses the same "cast" for left and right heads,but the part number will be different after machining for bank 1 or bank 2. Scott is correct on the date wheel cast indicating actual date of casting.
[Image-only post; no author-written text. Original image references:]
https://cimg4.ibsrv.net/gimg/rennlist.com-vbulletin/1600x1200/m96_4c76b5f189585aa2b520713ef375eb5fbd8dcd8e.jpg
[Image-only post; no author-written text. Original image references:]
https://cimg9.ibsrv.net/gimg/rennlist.com-vbulletin/2000x1504/17129126436517683147427322879402_cfb2b29dc2e666b081a3b7bb8910ad169f1cbedc.jpg
Hello all,
I have a 99 C4 Cab on it's second motor. Engine was swapped in 2016 per Carfax. (long before me)
Serial number. M96/0268X07177
My research leads me to be believe this is a 2008 Block and the X indicating a factory replacement.
Is this correct? Thanks
Thank you for the response and the source! I had read that X was one of the codes designated for a factory replacement but obviously not in my case. I guess they found a used matching motor and put it in. Unfortunately I have no info on mileage on motor # 2 at the time of install. Thanks again.
IMHO, that would be the best guess. The shop more than likely installed a suitable used M96.02.
Normally, Porsche stamped the letters "AT" in the engine code to denote an official replacement engine.
AT is an abbreviation of German word "Austausch".
Gotcha. Reached out to the shop but not holding my breath on info on a used motor from 9 years ago, Lol. Oil Analysis and Bore Scope will tell me enough. Oil change #2 next month.
Be encouraged!
On the M96.02 engine, Porsche used Lokasil I and the pistons had the more durable Ferrostan skirt material which means that engine was less prone to cylinder bore scoring and the engine has the more robust DUAL ROW IMS bearing that had less issues with failure. However... If the IMS bearing hasn't been changed, that would be the first thing on the list to replace at clutch service if the engine passes pre-qualification. Good luck!
I appreciate that! It did get the IMS replaced at the time of the engine swap with one from the link below.
https://web.archive.org/web/20230323...w.por-ims.com/
The shop that installed it swears by it but I will likely do the "Solution" in the future.
The person that started that company was banned from Rennlist and the fact that you have to use Webarchive to pull up his website tells the whole story.
I strongly recommend LN Engineering's IMS Solution which is a proven oil fed plain bearing like what is used in the Mezger engines. Thankfully, you have a serviceable engine in regards to the IMS bearing which means the engine doesn't have to be removed from the car and opened up just to replace the IMS bearing.
Wow! The plot thickens! I'm a year in with lots to learn but was not aware of the history behind the aforementioned company...good to know. I haven't heard any horror stories but still will be getting the solution in the future. I plan to keep the vehicle so happy to invest in it's future. Appreciate all the info
Heard back from the shop. Must have been an error or confusion on the carfax. The shop says they repaired the motor but did not replace. It got new head gaskets and some other work done. I wonder if they removed the whole engine/trans and re installed and for some reason that was coded as an engine replacement.
This is a source reference. Confirm exact model applicability in the original material.
