23 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHWhats wrong with this picture? The builder!
Leading reported evidence
Install with the tensioner
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
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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.
Performed · outcome unconfirmed · Original poster
The first picture is of bank 4-6 fitted with the tensioner that belongs in the IMS tensioner position.
Leading evidence: 'Install with the tensioner' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'improper piston installation' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Install with the tensioner' (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 suspect a cause
1
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Suspected cause
Err I would be shocked if that liner failure was caused by improper piston installation.
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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Suggestion
Was this something that wouldn't be detectable during a test drive?
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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Suggestion · Original poster
We know that because a decade ago was the last time we saw this type of cylinder failure using Nickies and it was MY fault, because I made a mistake assembling an aircooled Porsche test engine.
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
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Suggestion · Original poster
We know that because a decade ago was the last time we saw this type of cylinder failure using Nickies and it was MY fault, because I made a mistake assembling an aircooled Porsche test engine.
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
We know that because a decade ago was the last time we saw this type of cylinder failure using Nickies and it was MY fault, because I made a mistake assembling an aircooled Porsche test engine.
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
We know that because a decade ago was the last time we saw this type of cylinder failure using Nickies and it was MY fault, because I made a mistake assembling an aircooled Porsche test engine.
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
One of them developed the components, procedures and etc from scratch, while the other takes out big ads and sells engines by saying "yeah, we use all those same parts that Raby uses, we just don't charge as much or take as long to build the engine".
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.
23 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: 20261027T025149Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Here ya go.
As we say
"if you think a quality M96 engine is expensive, just wait till you see what a cheap one costs you"
.
This engine was built at a cost that exceeds 20K. It had "all the good stuff done". Of course we got the engine back here after the builder would not even consider accommodating the owner after the engine failed. Too bad the builder (who loves to take out huge ads) has yet to learn the proper placement of the 3 hydraulic chain tensioners within the engine, among other things. These mistakes are "pre- novice" as I've never even seen this occur from an enthusiast who's assembled an M96 engine!
Who knows where this belongs?
Now, it gets better. Utilizing the wrong tensioner on bank #2 and inverting it with the IMS Tensioner created excessive load on the tensioner paddle, creating this greatly accelerated wear. He is VERY lucky that the extra pressure didn't break the tensioner paddle and create complete engine loss.
And he might want to learn how to properly install the pistons into an LN Engineering "Nickies" equipped crankcase.. And buy the proper ring compressor to help avoid this:
It could have been much worse…
So yes folks, there is a difference in the outcome between two different builders in this industry. One of them developed the components, procedures and etc from scratch, while the other takes out big ads and sells engines by saying "yeah, we use all those same parts that Raby uses, we just don't charge as much or take as long to build the engine". These pictures, like all those that come before them tell the real story.
Hell, Charles from LN is down at my facility this week as we prepare for the release of the Gen 2 IMS Retrofit kit and he saw the cylinders first hand. He offered to strip and re-plate the block free of charge even though it was clearly assembly error that lead to this. We know that because a decade ago was the last time we saw this type of cylinder failure using Nickies and it was MY fault, because I made a mistake assembling an aircooled Porsche test engine.
You will always get exactly what you pay for in the world of Porsche engines and components. Give the wrong guy a 10mm wrench and you'll end up with a 20 thousand dollar paperweight and he won't even consider talking to you about what happened.
Err I would be shocked if that liner failure was caused by improper piston installation. You'd literally have to scrape the wall down with the rod end or something. Material failure perhaps?
Nope.. If that were the case the damage would be at 3-9 O'clock. Combustion did this.
When plating is exposed to cylinder pressures and combustion near the flame ring this is the result. This is the first time we've seen this since 2003 with Nickies cylinders, and that was when I made my mistake on an air-cooled engine. I threw a cylinder out of the lathe while trimming the skirt and it made an imperfection at the flame ring. We let it fly because it was a test engine that would be coming back apart. It failed exactly like this before we could take it apart.
Any plating/ surface damage at/ near the flame ring can lead to this.
Crazy, how big of a score was it on the wall to have it fail like that?
I have seen someone do that with the cracked end of the rod on a nikasil block; that's why OEMs put little shoes on the rod ends during assembly.
This was caused by using the wrong style of ring compressor and/ or procedure. A rod could have done it, but the root of the failure was at the flame ring, higher than the connecting rods will contact in an m96 engine thats being assembled.
Just wait till you see the port job the heads got… I can't wait to get them on the flow bench, I bet they flow LESS than a factory, non modified cylinder head!
I was thinking just drop some of the magic reco-in-a-bottle engine treatment in. Should be good to go for another 150k miles...
Can't wait to see the rest of the carnage.
The carnage isn't any worse than this.. It was caught in time and the spin on filter adaptor caught all of the debris. The port job isn't carnage, it's hilarious!
How long did this last? Was this something that wouldn't be detectable during a test drive? Something that some mechanics these days do less of after working on a car.
Later today. I am finishing the release details as we speak.
Its a mid-price point product thats 1K cheaper than the solution, yet offers 90% more load carrying capacity than a standard single row bearing.
This is only for single row OE equipped cars, the dual row cars don't need anything better than what we've already developed.
