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3.8l motor upgrade on 02 c4s

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

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YOUR RESEARCH3.8l motor upgrade on 02 c4s

Leading reported evidence

Use ?)

Performed · outcome unconfirmed

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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

used?)

3.8l motor upgrade on 02 c4s
Frequently discussed work

Run smoothly

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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

=) Electronics run smoothly?

3.8l motor upgrade on 02 c4s
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Leading evidence: 'Use ?)' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Run smoothly' (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 smoothly

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

=) Electronics run smoothly?

3.8l motor upgrade on 02 c4s
Frequently discussed actions (2)

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

Run smoothly

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

=) Electronics run smoothly?

3.8l motor upgrade on 02 c4s

Use ?)

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

used?)

3.8l motor upgrade on 02 c4s
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.

21 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.

1 acknowledgements have no verified action link; they do not establish a repair result.

Outcome without a verified action link

but I'm dying to know how this worked out!!

No unique explicit quoted action; no causal link assigned

Generation: 20261027T033922Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hey Everyone! Just wanted to give you guys a glimpse into my latest project. It's gonna be interesting!

POST 2Original post

Could tell me what kind of engine is it? (size, hp, torque, year? used?) John

POST 4 / ORIGINAL POSTEROriginal post

It's an 06 3.8l 997s motor that's bin balanced, blueprinted, ported and polished! Brand new from the assembly line!

POST 5Original post

Sweet! 1. What happened to your original engine? RMS? 2. If you don't mind, how much did it cost? 3. Also, what is "balanced"? Aren't they all balanced from factory? 4. I thought blue printing was significant only in older engines, specially engines with carburators. 5. Are there any chassis mods for the engine to fit? 6.With 3 and 4, you still end up with 355 hp, right?

POST 6Original post

I forgot 3 more: 7. What is ported? 8. Is the polishing you mention internal? - that would be blue printing. 9. 5 year warranty? ok I will stop now (no promises)

POST 8Original post

I am so jealous right now. Keep us updated. Someday once mine's been paid off, I would love to do this to it. Did you exchange your 3.6 to 3.8?

POST 9Original post

So you ended up with this 3.8. Sweet. Gave that one a long hard look but went with another. Very nice. Who is doing your work? -Paul

POST 10Original post

That will be sick, really cant wait to see the results! There is nothing like a wholesome transplant to increase the blood flow!

POST 11 / ORIGINAL POSTEROriginal post

THANKS FOR THE REPLIES Jd 1. My motor was in poor shape, the RMS had sufferrred almost a complete failure. 2. Its starting to cost a lot of money. so far approx. 13000, and a long ways to go 3-8. The motor was sent to Competition Automotive who performed a once over, exact extent of work performed is a bit of a mystery as I was not able to receive a spec sheet. All stock internals but somewhat massaged. End result is supposed to yield a min of 20hp. 9. Once the motor was openned, the 2yr warranty was lost with it.

POST 12 / ORIGINAL POSTEROriginal post

Jd, as far as chassis mods-none. Other diffs are starting to come to light as progress cont. Paul, Unfortunately no one close by with lots of exp., its in my shop. Everyone should perform heart surgery on a porsche at least once in there Lifetime! What did you end up going with?

POST 13Original post

Ed, I ended up going with a 3.6 that already had the x51 package. A bit of a better fit in the 99 996 as opposed to going to the 3.8. Your c4s to 3.8 should be simpler as all the correct electronics are present.

POST 14Original post

PLEASE, keep us posted with your project...looking good!

POST 15 / ORIGINAL POSTEROriginal post

What my worn out rms looks like!

POST 16Original post

Thanks for replying. Very interesting! I had 2 RMS, but now my 02 C4S is fine, just turned 60,000 Km. How many Kms when you got your RMS? Was it the first one? Sorry for all the questions, but I find your project fascinating, and I would love to know the details of what happened, that led you in this direction. John

POST 17Original post

Awesome project! Wish I would of opened this thread earlier. Let us know what items or components are needed to make the swap if you can, I am very curious. Balanced and Blueprinted; that motor should last forever at high RPM. You say ported. Was it hand ported or something like Extrudehone?

POST 18Original post

Finally had my 996 up on 4 jackstands for a long look and brake job, and with your pics I can see how the mount drops down after removing the bumper cover. Yours is awesome!

POST 19Original post

I know this thread is more than 2 years old... but I'm dying to know how this worked out!! =) Electronics run smoothly? No systems non-functioning? Would love to know the results!

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