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About to embark on 996 C4s engine replacement

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YOUR RESEARCHAbout to embark on 996 C4s engine replacement

Leading reported evidence

Replace ....possibly by the guardian system (still am not 100%

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Performed · outcome unconfirmed · Original poster

I am not talking about the IMS...that will be replaced....possibly by the guardian system (still am not 100% on it).

About to embark on 996 C4s engine replacement
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Leading evidence: 'Replace ....possibly by the guardian system (still am not 100%' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace ....possibly by the guardian system (still am not 100%' (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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Run le mans teams a couple of times

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Performed · outcome unconfirmed

Tony also ran the Le Mans teams a couple of times for Porsche.

About to embark on 996 C4s engine replacement

Run standard aos

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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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Performed · outcome unconfirmed

Also, I run a standard AOS on my '99 track car with Pirelli DH slicks and haven't had any issues.

About to embark on 996 C4s engine replacement

Run sticky tires

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Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed · Original poster

I run sticky tires.

About to embark on 996 C4s engine replacement

Replace oil every month during track season

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Suggestion

For me it seemed to add another level I didn't need; mostly where to put it but I also do my own oil changes and didn't want to add another level of complexity since I change oil every month during track season.

About to embark on 996 C4s engine replacement
Frequently discussed actions (5)

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

Replace ....possibly by the guardian system (still am not 100%

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 · Original poster

I am not talking about the IMS...that will be replaced....possibly by the guardian system (still am not 100% on it).

About to embark on 996 C4s engine replacement

Replace oil every month during track season

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

For me it seemed to add another level I didn't need; mostly where to put it but I also do my own oil changes and didn't want to add another level of complexity since I change oil every month during track season.

About to embark on 996 C4s engine replacement

Run le mans teams a couple of times

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

Tony also ran the Le Mans teams a couple of times for Porsche.

About to embark on 996 C4s engine replacement

Run standard aos

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

Also, I run a standard AOS on my '99 track car with Pirelli DH slicks and haven't had any issues.

About to embark on 996 C4s engine replacement

Run sticky tires

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 · Original poster

I run sticky tires.

About to embark on 996 C4s engine replacement
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.

13 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: 20261026T200546Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Gonna locate/order an engine within the next two weeks. I was thinking of adding an accusump system. What is the thought on this. I track the car. I don't race the car. I run sticky tires. I have read (rather skimmed) and I am not getting a clear picture of whether this would be a good route. I am not talking about the IMS...that will be replaced....possibly by the guardian system (still am not 100% on it). But I would like to get thoughts on the Accusump addition. Seems the cost is rather bearable considering dropping 5 figures on an engine and I definitely do not want to go through an engine replacement again. Gonna add the motorsport AOS as well and go through the engine. Jake, et. al....what are your thoughts? I am also planning on getting a matching mileage transmission. Anything I should do to it? I really wish I could afford Jake's services but I think I would rather just go get a 996 Turbo instead. It's too bad I'm so damn attached to my car and the wide body. Thanks, in advance.

POST 2Original post

Man, I was just having this conversation recently with a friend of mine. Sorry to hear this. I did a ton of research on this and ultimately didn't go with the Accusump but I'll let others chime in. For me it seemed to add another level I didn't need; mostly where to put it but I also do my own oil changes and didn't want to add another level of complexity since I change oil every month during track season. It seemed like overkill for a weekender but you've got me rethinking that. Are you able to salvage your X51 pan/baffle? If not, I have the FVD deep pan unit from LN and its been great. You're spot on about saving on the big items with the Engine out; valves, chains, guides, etc. All of the fun expensive stuff thats less dramatic with it on a mount. I've also heard that our stock Bosch DME can be programmed for a 997 3.8 but haven't confirmed. If you stick with another 3.6 I've got a few things in the garage I'm not using if you need em. I'll check my spare AOS as I can't recall if I bought the motorsports version or simply the upgraded 997 one. Godspeed.

POST 3 / ORIGINAL POSTEROriginal post

Quotes source post: 13888873

I haven't been able to salvage a single thing off the engine....maybe the alternator and a couple of other things which aren't going to really make a difference. I am reading up on LN's site and could go with the dual scavenger pumps but that's a pretty penny and am not sure whether that's going overboard for my purposes. I could just do the 2 qt deep sump kit and call it a day with adding an external oil cooler and delete the water heat exchanger as my track stuff is in Southern California. I would love to put a 3.8 in there but that's hard to come buy not to mention expensive. I rather do whatever to make the engine last. It's not like 320 hp was that small an amount, but 345 sure sounds better without having to get into a world of hurt with costs. If I am smart then I can get the engine, transmission and all ancillary improvements and MAAAAYBE a limited slip differential for 20k. Unfortunately, LN's engine (if they were actually able to do it in terms of time would be way over that money sadly).

POST 4Original post

The pan I'm using is the FVD 3/4 qt and it seems to work. The shop said the baffle looks identical to the X51 but is aluminum? instead of plastic - http://suncoastparts.com/product/FVD20798801.html

POST 5Original post

If you are going down this route I would at least talk to Jake first and find out what an FSI would cost you. It would be a shame to spend 20k and end up right back in the same boat. I assume you are going to buy a used engine for the swap or are you looking at a rebuild through RND or similar? Probably 2/3rds of the SP996 guys have accusumps, the rest have x51 baffles at a minimum. Also, I run a standard AOS on my '99 track car with Pirelli DH slicks and haven't had any issues. I keep the oil dead center on the dipstick though. As for a turbo engine, if you spend a lot of time on the track, then an NA is definitely the way to go. The NA power curve makes managing the rear end with the throttle much more enjoyable through the turns.

POST 6Original post

Have you uncovered the mode of failure yet? Your budget of 20k would allow you to rebuild and re-sleeve the engine unless the engine cases are damaged. If you D chunked a cylinder wall chances are you can re-sleeve and upgrade to 3.8 or 4liter. You may want to consider tearing the engine down to the point where you uncover the mode of failure. I spent a lot of time researching before I committed. I was able to get my car back on the road for much less than what you're budgeting. Pm me if you want some details of my rebuild.

POST 7Original post

If your budget is in the 20k mark.... ruby engines aren't out of your reach. And you'll know for sure that it's essentially a forever car st that point.

POST 8Original post

Talk to Tony Callas at Renn Sport in the Inglewood/Hawthorn area. He has worked with jake Raby and is an approved shop to do the full Soluntion IMS fix. Tony also ran the Le Mans teams a couple of times for Porsche. He, like Jake, is very expensive but he is also a nice guy and might be able to do things like the solution for you. Also talk to Marco at TLG Auto in the San Fernando Valley. He has a local engine source in So Cal that has a variety of levels of engine rebuilds on the shelf. You could be looking at a one week turn around and at prices that should work within your budget. TLG also builds and races Porsches. Between Tony and Marco you might get good advice on the sump questions, etc.

POST 10Original post

Quotes source post: 13888849

Tell us what happened to the motor. You have a beautiful C4S and it's a shame the engine gave up the ghost. Did it die on the track or just during normal driving?

POST 11Original post

Quotes source post: 13894518

Died on the track. Here is the thread if you missed it prior https://rennlist.com/forums/996-foru...66k-miles.html https://rennlist.com/forums/996-foru...t-the-ims.html

POST 12Original post

^Thanks man. Yea, I've busy at work and don't have a lot of RL time.

POST 13Original post

Quotes source post: 13894531

Oh man. Missed this post. Ouch. Good luck - let us know where we can help get the Bus back out there

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