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YOUR RESEARCH"Battle Tested" used M96 parts vs new "infant Mortality" rates
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Test "
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Performed · outcome unconfirmed · Original poster
So this thread will be for discussion on "Battle Tested" used M96 parts vs new "Infant Mortality" rates on brand new untested parts ....
"Battle Tested" used M96 parts vs new "infant Mortality" rates
Frequently discussed work
Inspect /refresh/rebuild i had more confidence in my used parts
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Suggestion · Original poster
When I was Racing almost full time and setting World Records on my engine that was 5x the production HP and a spinning it to 12k RPM, I loved my "Battle Tested Parts" ...Anytime I disassembled the engine to inspect/refresh/rebuild I had more confidence in my used parts that had proven reliability and was glad to re-use any or all of them and just replace the gaskets/seals and rings/bearings even though sometimes I had thoughts to re-use the bearings that were in perfect condition....But after heavy deliberation I would always relent to replacing all the "consumable" bearings, rings, gaskets, seals ect....
"Battle Tested" used M96 parts vs new "infant Mortality" rates
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Leading evidence: 'Test "' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Inspect /refresh/rebuild i had more confidence in my used parts' (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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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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Performed · outcome unconfirmed · Original poster
I see a lot of people PooPoo on used engines or parts or on used cars that have less than 90kmiles on them with fear of the "unknown" , but with no details of these fears....
"Battle Tested" used M96 parts vs new "infant Mortality" rates
Use engines or parts or
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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
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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 · Original poster
I see a lot of people PooPoo on used engines or parts or on used cars that have less than 90kmiles on them with fear of the "unknown" , but with no details of these fears....
"Battle Tested" used M96 parts vs new "infant Mortality" rates
Use like the crankshaft and cams anyway
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0
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1
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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.
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Performed · outcome unconfirmed · Original poster
During a "rebuild" a lot of hard core parts are re-used like the Crankshaft and Cams anyway.........
"Battle Tested" used M96 parts vs new "infant Mortality" rates
Use m96 parts vs new "infant mortality" rates
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 · Original poster
So this thread will be for discussion on "Battle Tested" used M96 parts vs new "Infant Mortality" rates on brand new untested parts ....
"Battle Tested" used M96 parts vs new "infant Mortality" rates
Frequently discussed actions (10)
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Inspect /refresh/rebuild i had more confidence in my used parts
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
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.
Suggestion · Original poster
When I was Racing almost full time and setting World Records on my engine that was 5x the production HP and a spinning it to 12k RPM, I loved my "Battle Tested Parts" ...Anytime I disassembled the engine to inspect/refresh/rebuild I had more confidence in my used parts that had proven reliability and was glad to re-use any or all of them and just replace the gaskets/seals and rings/bearings even though sometimes I had thoughts to re-use the bearings that were in perfect condition....But after heavy deliberation I would always relent to replacing all the "consumable" bearings, rings, gaskets, seals ect....
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 · Original poster
When I was Racing almost full time and setting World Records on my engine that was 5x the production HP and a spinning it to 12k RPM, I loved my "Battle Tested Parts" ...Anytime I disassembled the engine to inspect/refresh/rebuild I had more confidence in my used parts that had proven reliability and was glad to re-use any or all of them and just replace the gaskets/seals and rings/bearings even though sometimes I had thoughts to re-use the bearings that were in perfect condition....But after heavy deliberation I would always relent to replacing all the "consumable" bearings, rings, gaskets, seals ect....
"Battle Tested" used M96 parts vs new "infant Mortality" rates
Replace .....but of course
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
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.
Suggestion · Original poster
Any time any "hard core parts" would show any signs of wear or fatigue of course I would replace them with the highest quality and $$ was not a consideration, ....but the new untested parts no matter the quality or cost were never as confident inspiring as the "Battle Tested" parts that were being replaced.....but of course after they had "proven" them selves the confidence would return...
"Battle Tested" used M96 parts vs new "infant Mortality" rates
Replace gaskets/seals and rings/bearings even though sometimes i had thoughts
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
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.
Suggestion · Original poster
When I was Racing almost full time and setting World Records on my engine that was 5x the production HP and a spinning it to 12k RPM, I loved my "Battle Tested Parts" ...Anytime I disassembled the engine to inspect/refresh/rebuild I had more confidence in my used parts that had proven reliability and was glad to re-use any or all of them and just replace the gaskets/seals and rings/bearings even though sometimes I had thoughts to re-use the bearings that were in perfect condition....But after heavy deliberation I would always relent to replacing all the "consumable" bearings, rings, gaskets, seals ect....
"Battle Tested" used M96 parts vs new "infant Mortality" rates
Set world records
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
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.
Suggestion · Original poster
When I was Racing almost full time and setting World Records on my engine that was 5x the production HP and a spinning it to 12k RPM, I loved my "Battle Tested Parts" ...Anytime I disassembled the engine to inspect/refresh/rebuild I had more confidence in my used parts that had proven reliability and was glad to re-use any or all of them and just replace the gaskets/seals and rings/bearings even though sometimes I had thoughts to re-use the bearings that were in perfect condition....But after heavy deliberation I would always relent to replacing all the "consumable" bearings, rings, gaskets, seals ect....
"Battle Tested" used M96 parts vs new "infant Mortality" rates
Test " parts
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
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.
Suggestion · Original poster
Any time any "hard core parts" would show any signs of wear or fatigue of course I would replace them with the highest quality and $$ was not a consideration, ....but the new untested parts no matter the quality or cost were never as confident inspiring as the "Battle Tested" parts that were being replaced.....but of course after they had "proven" them selves the confidence would return...
"Battle Tested" used M96 parts vs new "infant Mortality" rates
Use any or all of them and just
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
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.
Suggestion · Original poster
When I was Racing almost full time and setting World Records on my engine that was 5x the production HP and a spinning it to 12k RPM, I loved my "Battle Tested Parts" ...Anytime I disassembled the engine to inspect/refresh/rebuild I had more confidence in my used parts that had proven reliability and was glad to re-use any or all of them and just replace the gaskets/seals and rings/bearings even though sometimes I had thoughts to re-use the bearings that were in perfect condition....But after heavy deliberation I would always relent to replacing all the "consumable" bearings, rings, gaskets, seals ect....
"Battle Tested" used M96 parts vs new "infant Mortality" rates
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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.
14 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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So this thread will be for discussion on "Battle Tested" used M96 parts vs new "Infant Mortality" rates on brand new untested parts ....
What are your concerns ??
I see a lot of people PooPoo on used engines or parts or on used cars that have less than 90kmiles on them with fear of the "unknown" , but with no details of these fears....
Any Automotive Part, Aerospace Part, or Medical Equipment has a Bathtub Curve of reliability in three stages....1: Early failure ( Infant Mortality) , 2. Usefull life 3: End of life ( worn out)...with the Usefull Life being the most failure free period where parts are the most dependable ..
When I was Racing almost full time and setting World Records on my engine that was 5x the production HP and a spinning it to 12k RPM, I loved my "Battle Tested Parts" ...Anytime I disassembled the engine to inspect/refresh/rebuild I had more confidence in my used parts that had proven reliability and was glad to re-use any or all of them and just replace the gaskets/seals and rings/bearings even though sometimes I had thoughts to re-use the bearings that were in perfect condition....But after heavy deliberation I would always relent to replacing all the "consumable" bearings, rings, gaskets, seals ect....
Any time any "hard core parts" would show any signs of wear or fatigue of course I would replace them with the highest quality and $$ was not a consideration, ....but the new untested parts no matter the quality or cost were never as confident inspiring as the "Battle Tested" parts that were being replaced.....but of course after they had "proven" them selves the confidence would return...
During a "rebuild" a lot of hard core parts are re-used like the Crankshaft and Cams anyway......... and others are "upgraded" like Pistons, Rods ( just for the hell of it or for more displacement-hp)......... but just for a factory performing 300hp engine why the fear of a 50K miles engine when it cost less than $10K when a rebuild is $30k-$40K?
Hard Core Race engines are always built a little looser clearance wise to help keep friction /temperature low at high RPMs and engines with several thousands of miles will have the clearances opened up a bit as well and are suitable for Track Work...
So I have seen some cars and engines get PooPooed on so now is the time to discuss your fears with real facts/data to ease the concerns...These cars have been on the road for 25 years and we now know all the faults most of which can be eliminated or upgraded without splitting the cases or even removing the head bolts...
You�re absolutely right about this, especially nowadays because there is
a lot
of terrible parts on the market right now, even from respected brand names.
I didn't think this $8k engine would last long.......and it didn't !!!
https://redirect.viglink.com/?format...851538272.html
I would have asked two important questions before buying,..(1); what is the total mileage on on the "Battle Tested Parts" .( 2) ; what was the cause for the dissembly/reassembly?
If it was just an IMSB failure on a 50k miles it would have been a steal for someone especially since he was willing to do the install also...
And I assume you could keep you old engine ( if there was anything left of it )
Did someone in here buy it ???
Skip I wish there was a reasonable engine rebuilder but unfortunately it’s not real
a stock engine from Porsche is as low as $6400 aftermarket with at least 75hp more really worth $40000
i wish there was a rebuilder that can redo my motor for under $20k
im still hoping my engine holds out
If I was just 30 years younger.......when I see IMSB replacements for $6800 !!! .....and here I am a 69yo retired Porscehetech on SSI with a side hustle of UAOS.UIDS...
Labor prices in the US have gone crazy ...Just 6 years ago in the UK you could get a turn-key rebuild from Hartech for under $10K
https://rennlist.com/forums/996-foru...DIY+10K+Engine
On my end, what I can tell you is that prices have gone up significantly post-covid on everything and there have been quality issues with most every supplier, requiring us to spend a lot of time doing quality checks that otherwise shouldn't be needed.
Part of the issue that has been discussed ad nauseum is that between covid and the forced EV push, that sent suppliers into a tail spin. Many parts, like Beru coils, used to be made in Germany and now they are from China. Same with lots of Mahle filters and Bosch injectors. The list goes on and on. I have personally seen new coil packs and injectors be bad right out of the box. Same goes for coolant expansion tanks - you basically have to use a Genuine one or the caps don't fit and they won't hold pressure.
There is a difference between Genuine and OEM, even if it looks like a factory part or it is made by the same manufacturer, not to say that everything from Porsche is perfect. Case in point are the genuine cam sprockets for the aircooled cars that are made by Sebro and have known issues. We've been telling customers for years to only run R&S replacements or use re-use the originals.
And some parts are just flawed by design, like the M96 water pump. There is no hardened 52100 steel inner race for the bearing - the ***** run right on the shaft. That's the root cause of why they fail.
Same goes for the master link chains made for the M96 years ago - the master link clip wasn't made right and the clips would eject. All the chains ended up getting recalled after several engines popped.
I speak to other industry professionals outside the Porsche world and this isn't something isolated to just our cars.
I've been surprised to see a couple of sad owners report their engines have bitten the dust. In both cases a dealer reported the IMS bearing had failed at 7,000 miles/ 3 years ago. In electronics, infant mortality is a science based fact. Would we have considered 7,000 miles infant mortality or more likely a failure by the installer? (Neither engine had a LN bearing).
Thanks Glen....I need to get down to the basement and do some needed maintenance on Sally I have put off over the Winter so I can do some Summer Road Tripping !!!
FWIW there's a rebuilder in France that does full M96 rebuilds for 9 900 to 13 400� (about $11-15k, 20% sales tax included), with a full 3-year warranty if you have them install your new engine, which is about another $2-3k.
They use either LN bearings or the updated "big IMS". Steel liners, though. But the warranty should be enough to reassure anyone for a least some time. They say they do about 200 engines a year, and are a supplier of rebuilds to many Porsche service centers that simply don't want to touch M9xs anymore.
Not advertising them in any way, I'm neither affiliated nor a customer. But it looks like it's doable for a reasonable cost.
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