15 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH3.8L X51 Upgrade to 2001 C2
Leading reported evidence
Use had the euro map handy
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
(I think the shop he used had the Euro map handy - but you'll need to confirm with him).
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
I've been informed through Porsche that the 3.6L X51 is a pretty straight forward swap (DME remapping) and also by a very reputable performance shop that a 3.8L X51 swap is also possible with a "box" to adjust for the special needs of the Vario-Cam Plus.
Leading evidence: 'Use had the euro map handy' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Adjust special needs of the vario-cam plus' (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 · Original poster
I've been informed through Porsche that the 3.6L X51 is a pretty straight forward swap (DME remapping) and also by a very reputable performance shop that a 3.8L X51 swap is also possible with a "box" to adjust for the special needs of the Vario-Cam Plus.
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.
Check with judd taylor over in the racing/de section
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
Check with Judd Taylor over in the Racing/DE section.
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 would recommend just replacing your motor with a factory reman 3.4 The X-51 is expensive and for reference, the 3.8L X-51 is upwards of $20K from the factory (we put one in a Cayman).
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Adjust special needs of the vario-cam plus
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
I've been informed through Porsche that the 3.6L X51 is a pretty straight forward swap (DME remapping) and also by a very reputable performance shop that a 3.8L X51 swap is also possible with a "box" to adjust for the special needs of the Vario-Cam Plus.
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 would recommend just replacing your motor with a factory reman 3.4 The X-51 is expensive and for reference, the 3.8L X-51 is upwards of $20K from the factory (we put one in a Cayman).
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
2) You could also replace the dme and harness from a car with a 3.6 and then you would have a very stock setup that runs the vc plus the exact same way as the factory did.
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 would recommend just replacing your motor with a factory reman 3.4 The X-51 is expensive and for reference, the 3.8L X-51 is upwards of $20K from the factory (we put one in a Cayman).
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.
15 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: 20261027T165639Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I "popped" my engine this past weekend on my dedicated 2001 3.4L C2 track car. Now being a good time to upgrade the power plant, I'd like to go with a new X51 crate motor. I've been informed through Porsche that the 3.6L X51 is a pretty straight forward swap (DME remapping) and also by a very reputable performance shop that a 3.8L X51 swap is also possible with a "box" to adjust for the special needs of the Vario-Cam Plus.
Feedback from those who have done the 3.6L or 3.8L swap would be appreciated.
Thanks in advance.
For the 996 based 3.6 engine (x51 or not) your options are.
1) You will need the DME remapped for the fuel maps to run the 3.6 or 3.6x51 and a box as you put it control the vc plus. (this is what was done for my car a 1999 car and a few others on here that I know of such as JimB's old race car)
2) You could also replace the dme and harness from a car with a 3.6 and then you would have a very stock setup that runs the vc plus the exact same way as the factory did.
As for the 3.8 or any 997 based engine, you need to do a bit of research here. There are a lot of incompatible systems on the newer cars such as the fuel return system and the actual instrument clusters and hvac. A 3.8 can be made to work but it would be much more of a science project in a 996. Nothing wrong with that. But the shop doing the work had better know what they are doing and have some experience doing similar projects/retrofits.
For a track toy car... I would do the 3.8x51
If you want to compete with it stick to the 3.6 as then you can fit into a class and not be bumped up too high.
Good luck.
-Paul
Check with Judd Taylor over in the Racing/DE section. He just did a swap to 3.6 X51 (last month or 2), and didn't need much more than plug the engine in. (I think the shop he used had the Euro map handy - but you'll need to confirm with him).
-td
I would never discourage anyone from taking on such a project but if I were in your shoes I would build a 3.4 to optimal PCA club racing specs. That will give you a great car that has a market when you go to sell it. Spending $15k on suspension, etc. will yield more than $15k on hp and be much more fun to drive.
If you do make the swap, make sure the shop you work with has done it before. The learning curve can get pretty expensive.
Just my 2 cents worth.
Jim
Paul - Thanks for the concise reply. You bring up a very valid point regarding classification. I do plan on using it for w2w comp, so I'll guess I'll need to figure out what the best class would be for the final product in SCCA, NASA and PBOC. Can you shed any further light on the subject?
AudiOn19s - I don't really have specifics. On track the engine vibrated bad, blew tons of smoke and quit - luckily it didn't dump oil on the track. My tech says it's done and I'm not going to waste money on an autopsy since I want an motor upgrade.
TD - I read Judd's thread, but I believe he put in a 3.4L X51 - I'm looking at a 3.6L or 3.8L - but it was still an interesting post.
Jim - I've put most of my money into suspension up to this point, I'm just not happy with the 3.4L. Would I be at a huge disadvantage by "classing up" with the 3.6L or 3.8L upgrade?
Thanks - Patrick
Patrick,
For racing in PCA you would be screwed with a 3.8L x51. As the rules stand I think you would run in GTA or GT2S/R. You would get killed in those classes. With a 3.6 x51 you would run against GT3s with a similar outcome.
NASA uses a HP/weight formula that rewards great handling, light cars. It's always better to decrease weight than to increase hp in these systems.
I'm not sure about the other organizations.
What suspension do you have? Check your wallet. If you have any money in it you don't have enough suspension.
Jim
Great points. I'm attending a PCA (DE) this wekend at Road Atlanta - perhaps I can find a knowledgable member to discuss classing with.
Ajustable coilovers w/ camber plates, GT3 bars, adjustable drop links - yes there is always more and better - but to this point I've foucsed on suspension before other modifications. My initial path was to buy an older Cup car and sell my existing 996 C2. Since I blew the engine, I'm thinking that I can build a car capable of lap times similar to an older Cup but without having to foot the bill for a new Cup engine every 30 hours.
You can't make your car as fast as a cup car. That I can promise you. I had a pretty fast 996 but my 996 cup was 6 to 10 seconds faster at every track. FWIW, Cup motors last more like 130 hours than 30.
Again, I don't want to discourage you from chasing more power but it doesn't sound like your suspension is even close to optimal. Think full monoballs, 4 way adjustable race dampers, big springs, GT3 control arms, etc. etc.
I would recommend just replacing your motor with a factory reman 3.4 The X-51 is expensive and for reference, the 3.8L X-51 is upwards of $20K from the factory (we put one in a Cayman). I agree with the other poster's also, setup wins races not extra power. Spend the difference on a proper suspension and put that car on a diet...
