11 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHEngine Upgrade
Leading reported evidence
Clean oil-fouled 996 cooling system
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
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Suggestion
Regarding cleaning an oil-fouled 996 cooling system, it's messy but pretty easily done with enough flushing using a mix of liquid laundry detergent and hot water.
Leading evidence: 'Clean oil-fouled 996 cooling system' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Clean oil-fouled 996 cooling system' (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 contain suggestions
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.
Suggestion
The repair issues get much larger if that is the case.
Use 7.2 motronic so at least the connectors physically mate
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.
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Suggestion
It's easier if you start with a 3.4L E-gas car, which used the 7.2 Motronic so at least the connectors physically mate with the 7.8 DME.
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
Regarding cleaning an oil-fouled 996 cooling system, it's messy but pretty easily done with enough flushing using a mix of liquid laundry detergent and hot water.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Clean oil-fouled 996 cooling system
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
Regarding cleaning an oil-fouled 996 cooling system, it's messy but pretty easily done with enough flushing using a mix of liquid laundry detergent and hot water.
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
Regarding cleaning an oil-fouled 996 cooling system, it's messy but pretty easily done with enough flushing using a mix of liquid laundry detergent and hot water.
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.
11 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Pelican Parts: 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: 20261026T133652Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
New to the forum, so bare with me; I just acquired a '99 911 with a blown engine (3.4L) and was curious to know if it is possible to replace it with a 3.6L without much or any alterations?
Read this to get a idea of what is involved for different year engines :
https://www.pelicanparts.com/techarticles/Boxster_Tech/11-ENGINE-911_Engine_Swap/11-ENGINE-911_Engine_Swap.htm
I have a rebuilt 2001 engine that is 3.6 litre displacement and other upgrades that would be easier to install.
Do you know why the engine blew? 99’s were known for oil-coolant intermixes. That means either a cracked head or cylinder let them mix. The repair issues get much larger if that is the case. The ‘sludge’ is next to impossible to clean and all coolant lines need to be replaced. You may be able to salvage the rads if you’re lucky. I bought a 99 as well, same condition. Thought engine only due to IMS but it was an intermix. Open up a coolant line and see what you have. Good luck.
3.6L Variocam in a '99? Not an easy proposition due to the fact that the 3.6s were driven by the 7.8 version of the Motronic DME.
It's easier if you start with a 3.4L E-gas car, which used the 7.2 Motronic so at least the connectors physically mate with the 7.8 DME. Then all that needs to be done is to move a very small number of wires in the DME connectors and add a couple of wires for the Variocam control back to the engine.
But in a '99, which wasn't E-gas, the connectors in the stock DME loom won't even mate with the 7.8 DME, so you're looking at a lot of hacking to make this work.
Regarding cleaning an oil-fouled 996 cooling system, it's messy but pretty easily done with enough flushing using a mix of liquid laundry detergent and hot water. Avoid any foaming soaps or degreasers as they are not nearly as effective as a non-foaming detergent.
Can you please back that up with some facts.
Its the only car I’m interested in.
Now I hear the turbo version is reliable, but not the different engine type
