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Failed engine, anything worth saving?

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29 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

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YOUR RESEARCHFailed engine, anything worth saving?

Leading reported evidence

Repair worse

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

We've repaired worse.

Failed engine, anything worth saving?
Frequently discussed work

Recommend jake raby

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

I also highly recommend Jake Raby

Failed engine, anything worth saving?
Read full discussion summary

Leading evidence: 'Repair worse' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Recommend jake raby' (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.

Read captured replies

1 matching discussions · 29 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Replace 996

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

, albeit long, currently has 997 posts (which I find amusing as I replaced the 996 with a 997.2).

Failed engine, anything worth saving?

Recommend jake raby

Suggestion or failed attempt

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 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

I also highly recommend Jake Raby

Failed engine, anything worth saving?

Recommend reading the thread if you want

Suggestion or failed attempt

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 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

I'd highly recommend reading the thread if you want to do the rebuild.

Failed engine, anything worth saving?

Repair blocks

Suggestion or failed attempt

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 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

Some m-codes are easier to find core engine blocks for at a reasonable price, so it's not always cost effective to repair the blocks, but when you need an M97.21 or M97.01, those cases are hard to get an expensive.

Failed engine, anything worth saving?
Frequently discussed actions (8)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Recommend jake raby

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

I also highly recommend Jake Raby

Failed engine, anything worth saving?

Recommend reading the thread if you want

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

I'd highly recommend reading the thread if you want to do the rebuild.

Failed engine, anything worth saving?

Repair blocks

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

Some m-codes are easier to find core engine blocks for at a reasonable price, so it's not always cost effective to repair the blocks, but when you need an M97.21 or M97.01, those cases are hard to get an expensive.

Failed engine, anything worth saving?

Repair looks like

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

Here is what the repair looks like to replace the parent metal on the crankcase side of the cylinder.

Failed engine, anything worth saving?

Repair worse

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

We've repaired worse.

Failed engine, anything worth saving?

Replace 996

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

, albeit long, currently has 997 posts (which I find amusing as I replaced the 996 with a 997.2).

Failed engine, anything worth saving?

Replace parent metal

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

Here is what the repair looks like to replace the parent metal on the crankcase side of the cylinder.

Failed engine, anything worth saving?

Use practice installing wrist pins if nothing else

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

The bad case half could be used for practice installing wrist pins if nothing else.

Failed engine, anything worth saving?
Coverage and how to read this overview

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.

29 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: 20261026T225432Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I finally tore down my engine that broke some years ago. I was hoping that the case might have been ok but clearly not, the crank is probably gone also. Is there anything I should save for spares? Half a case? Pistons? From the top end I�ll save the heads of course.

POST 2Original post

Wow, that's some serious destruction right there, my condolences. How'd it happen, routine operation, or race related?

POST 3 / ORIGINAL POSTEROriginal post

Quotes source post: 16519683

It happened on a track but no competition, just for fun. All three chain tensioners had been mounted in the wrong places by previous owner so I�m thinking it could have been part of the reason it failed, or just oil starvation.

POST 5Original post

Save everything, you never know down the road if/when people will start fixing parts that are considered junk today. You still got some usable parts: sump plate, IMS, heads, the block might be a candidate for a full sleeve conversion.

POST 6Original post

The bad case half could be used for practice installing wrist pins if nothing else. I'd be interested in the crank if it isn't in too bad of shape. I'd use it for instructional purposes only...once I'm able to have another automotive class. (Covid-19 sucks!) A broken rod/damaged piston would be great for Automotive 101 classes. (Here's what happens if...)

POST 7Original post

I held onto my blown up engine and have given away a lot of parts to people that needed them. You'd be surprised how a part you might throw away today could be of use to another rennlister in the future.

POST 8Original post

Quotes source post: 16519680

That case is fixable. Don't toss it. We've repaired worse.

POST 9Original post

Wow...looks identical to my engine when it blew up....For mine it was clearly oil starvation on the same cylinder as yours. The Crank was worn and discolored from overheating at that location. I still have the LN bearing from that engine when I disassembled which of course was intact.... Charles, is the bearing still useable?

POST 10Original post

Quotes source post: 16522228

Nope, bearing should not be reused unless it's an IMS Solution, which would just need to be washed out.

POST 11Original post

Quotes source post: 16522228

The con rod journal isn't blue enough to show oil starvation. Something else in the journal let go, maybe the bolts.

POST 12Original post

For me it was definitely oil starvation....nice and blue

POST 13Original post

Quotes source post: 16522303

Even with only 2k miles?

POST 14Original post

Quotes source post: 16522814

Even if it only had 5 miles the debris in the oil got into the bearing and compromised it.

POST 15Original post

Quotes source post: 16522958

Yeah, makes sense since there is no seal on one side....

POST 16Original post

Quotes source post: 16521951

I got a case that is broken about like that, I was gonna make one of those glass top coffee tables out of it. I guess I will have to find another base to make my glass top coffee table from . Thanks !!! Have you got any pics of how you support the lower cylinder of the broken case?

POST 17Original post

I see a cool table in the making if nothing else

POST 18 / ORIGINAL POSTEROriginal post

Quotes source post: 16522811

Would seem to be the case with mine also...

POST 19 / ORIGINAL POSTEROriginal post

Quotes source post: 16521951

Wow, I really didn�t think that would be possible since the damage is in the lower part of the cylinder! Too bad the shipping cost to US from Sweden probably will be pretty high for such a large and heavy item. The other half of the case also has some damage, although minor, in the same place so that would also have to be fixed. I was thinking of contacting Hartech in UK to see what they say, the shipping and other costs would be much lower.

POST 20Original post

Quotes source post: 16523901

No question in my mind...it happened on the track on a long sweeping right hander.... ​​

POST 21Original post

Yes, now looking at in in clear light, looks that way.

POST 22 / ORIGINAL POSTEROriginal post

But it happened after a long straight into a hairpin left, leading to a long sweeping left

POST 23Original post

I gave my case away....what could I have gotten for it with the same damage?

POST 24Original post

5 years ago, my IMS failed. Sold the 202 996.2 base Carrera 6 MT roller to Ahsai who rebuilt the engine as a 3.8 over a nearly 1 year period. The thread https://rennlist.com/forums/996-foru...wn-engine.html , albeit long, currently has 997 posts (which I find amusing as I replaced the 996 with a 997.2). I'd highly recommend reading the thread if you want to do the rebuild. I also highly recommend Jake Raby Flat6 Innovations for his numerous comments during Ahsai 's rebuild. Beat of luck of your efforts.

POST 25Original post

Quotes source post: 16523904

Some m-codes are easier to find core engine blocks for at a reasonable price, so it's not always cost effective to repair the blocks, but when you need an M97.21 or M97.01, those cases are hard to get an expensive. Here is what the repair looks like to replace the parent metal on the crankcase side of the cylinder.

POST 26Original post

Quotes source post: 16525866

Charles: You guys do nice work. That is beautiful!

POST 28 / ORIGINAL POSTEROriginal post

Quotes source post: 16530488

5 are, the one in the broken cylinder not so much...

POST 29Original post

Subscribed as I have a spare 3.4 undamaged but this thread has me curious

This is a source reference. Confirm exact model applicability in the original material.