3 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHEngine swap: 2005 997s auto into 2001 986s manual - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Leading reported evidence
Use two versions of abs, 5.3 and 5.7
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
Basically the 986 used two versions of ABS, 5.3 and 5.7.
Engine swap: 2005 997s auto into 2001 986s manual - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Read full discussion summary
Leading evidence: 'Use two versions of abs, 5.3 and 5.7' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check which dme you have' (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
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
Get yourself a wiring diagram to check which DME you have and which one the donor has.
Engine swap: 2005 997s auto into 2001 986s manual - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Replace 986s 3.2 engine
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 · Original poster
- If I replace the 986s 3.2 engine with the the 2005 987s 3.2 engine, would I use the 987 engine wire harness, DME, ECU, immobilizer and anything else I scavenge?
Engine swap: 2005 997s auto into 2001 986s manual - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Replace ims
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 · Original poster
- Without a hoist I managed to drop my 2001 engine and trans 2 years ago to replace the plastic chain rails and replace the IMS.
Engine swap: 2005 997s auto into 2001 986s manual - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Replace plastic chain rails
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 · Original poster
- Without a hoist I managed to drop my 2001 engine and trans 2 years ago to replace the plastic chain rails and replace the IMS.
Engine swap: 2005 997s auto into 2001 986s manual - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Replace 986s 3.2 engine
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
- If I replace the 986s 3.2 engine with the the 2005 987s 3.2 engine, would I use the 987 engine wire harness, DME, ECU, immobilizer and anything else I scavenge?
Engine swap: 2005 997s auto into 2001 986s manual - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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.
3 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
986Forum: 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: 20261026T161109Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
My 2001 Boxster S needs new variocams and other parts. At over 100k miles I don't want to put $3k in variocams, plus a ton of work pulling the head covers to replace them.
Instead, I have a line on a
2005 987s w/ 41K miles, auto trans. ENTIRE vehicle (front end collision) for 5K. I figure I could use the engine and sell the tiptronic, convertible top, decklid, fender, rear bumper cover, wheels, etc. I could also scavenge some suspension and other parts (coolant tank.) for my 2001.
Questions I need to answer:
- If I replace the 986s 3.2 engine with the the 2005 987s 3.2 engine, would I use the 987 engine wire harness, DME, ECU, immobilizer and anything else I scavenge? Will I need to re-pin the 2001 body wire harness at all, in order for it to go into the 987 DME, or can I easily use all the 2005 harnesses (harnessii?) I believe my 2001 has canbus of some sort.
- What mods will I need to make to reuse my manual trans (and clutch and flywheel) if the donor engine and associated parts are from a tiptronic? Are the engine wire harnesses different between the different transmissions?
- I believe I may need to use the 987 fuel pump and ABS module but that seems pretty simple.
- Without a hoist I managed to drop my 2001 engine and trans 2 years ago to replace the plastic chain rails and replace the IMS. This time I can rent a DIY shop with hoist near me.
In my mind having the entire 987 makes this project much more DIY friendly. What am I missing?
Main items to check first would indeed be ABS (do you have PSM now, what does the 987 have etc etc). Basically the 986 used two versions of ABS, 5.3 and 5.7. The 5.7 one will likely give you the correct CAN data for the DME, The 5.3 likely will not.
Other thing would be the DME. Get yourself a wiring diagram to check which DME you have and which one the donor has. Also, there is a good article on the 101 projects website / book on the compatibility of engines in the different model years. Give this a good read.
The short question: Can I move the engine, DME, ECU, wiring harnesses (body and engine), immobilizer, and ABS module from the 2005 987S 3.2 tiptronic to the 2001 986S 3.2 6speed manual body without having to repin or reprogram much?
This is a source reference. Confirm exact model applicability in the original material.
