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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHRebuilt eng from porsche how to check for?
Leading reported evidence
Use wrong keyword search
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Read evidence and context
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Performed · outcome unconfirmed · Original poster
I must have used wrong keyword search, but thanks just what I wanted to know.
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Suggestion · Original poster
The engine does come with 1 year warrenty but even with that if it makes it a year it still could be a high mileage eng that made there warrenty period, hense the need for engine check along with verifing the integrity of the person selling.
Leading evidence: 'Use wrong keyword search' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check along' (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.
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Suggestion · Original poster
The engine does come with 1 year warrenty but even with that if it makes it a year it still could be a high mileage eng that made there warrenty period, hense the need for engine check along with verifing the integrity of the person selling.
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.
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Suggestion · Original poster
and will they run the Vin without ownership validation to check numbers?
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Suggestion
There are of course specialist shops that do tear-down and repair on M96 - but most dealerships do not touch engines to this level these days.
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Suggestion
Dealerships therefore treat the engine as a swappable module, rather than a possible tear-down repair option.
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Check along
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1
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Suggestion · Original poster
The engine does come with 1 year warrenty but even with that if it makes it a year it still could be a high mileage eng that made there warrenty period, hense the need for engine check along with verifing the integrity of the person selling.
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.
19 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: 20261026T105141Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I haven't heard that Porsche dealerships rebuilt engines (3.4 & 3.6) they order a brand new one from Germany... well in Canada that is!
If there's no paperwork, you could inquire as to where it was done (independant garage or dealer) and then contact them to confirm and have more details...
Try a search, here or on Renntech. The engine's serial number is stamped somewhere around a header tube, and if it's a reman the number has an X at the end, or something like that, as far as I recall. But don't trust me. Plenty written on this, and pictures over on Renntech, I believe.
porsche normally re-builds engines when replacing a customers engine under warranty. i have not heard from anyone here who has received a brand new engine from porsche. as long as the block is re-useable porsche re-builds them with the latest engine modifications and up-grades.
Mother,
When I was searching for one, I found that the markings of the engine SN# with anything telltale was in-consistent at best. My advice is to not take any "dismantlers' word on anything. I can give you an earful. They are overly optimistic about the condition of things and what it includes. If there is no documentation of it being a reman then price it and treat it as a used engine with the mileage shown by that cars particular VIN. The burden of proof is on them to sell their used item.
My experience so far was an engine with 1 of the headers crushed and one side of the PSE just plan missing. Don't even get me started on them calling the engine an x51 when it ended up not being.
And the last bit on pricing... 50% of what you would pay for a reman with warranty... no more.
Paul: The guys that have this engine rebuild porsche engines, but that being said proof is proof and agree with you. The engine does come with 1 year warrenty but even with that if it makes it a year it still could be a high mileage eng that made there warrenty period, hense the need for engine check along with verifing the integrity of the person selling.
That's not quite correct.
Porsche provide a remanufactured M96 engine from stock as the warranty replacement for your dead one.
Ask me how I know.... twice!
The remanufactured blocks are ones that initially failed QC at the factory, and were then disassembled and remanufactured to meat the QC spec.
Early failed M96 blocks were returned to the factory for QC checks, so they could figure out why they were failing - porous block, cracked head, slipped cylinder linings etc etc - Early RMS failure engines were also returned to Germany as they believed they has an issue with 'out of round' tolerances leading to the RMS issue. This has since stopped and RMS repairs are done at the dealerships (a lot!).
Dealerships therefore treat the engine as a swappable module, rather than a possible tear-down repair option.
There are of course specialist shops that do tear-down and repair on M96 - but most dealerships do not touch engines to this level these days.
It is not a reman motor, '66X' is the engine code for 1999. A reman motor has 'AT' between the engine type and the serial number. For instance the reman motor in my garage has the code M96/03 AT 665 65160.
The new X51 engine is M96/03 S 665 40644
Any 'coding' is between the engine type and the beginning of the serial number (ie the rebuilt engine code AT and the X51 designation 'S' in the above two examples). The next three digits of the serial number reflect the year of the engine.
66W is 1998
66X is 1999
66Y is 2000
661 through 665 is 2001 through 2005 respectively. Thus both of the engines in my examples were built in 2005.
The last 5 are the sequential serial number.
Todd
