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Engine Swap Questions

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

Discussion summary

YOUR RESEARCHEngine Swap Questions

Leading reported evidence

Use stock computer

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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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
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

IIRC he used the stock computer with a 3.6 flash and a stand alone controller for the Variocam control...but otherwise I believe his is a cable throttle 3.6 now.

Engine Swap Questions
Frequently discussed work

Replace engine might be neccessary

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

Anyways, I gave it to the dealer and I get the diagnosis tomorrow but replacing the engine might be neccessary.

Engine Swap Questions
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Leading evidence: 'Use stock computer' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace engine might be neccessary' (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.

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1 matching discussions · 10 captured posts examined · 0 partial discussions

Compare 1 other evidence results

Replace engine might be neccessary

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

Anyways, I gave it to the dealer and I get the diagnosis tomorrow but replacing the engine might be neccessary.

Engine Swap Questions
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.

Replace engine might be neccessary

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

Anyways, I gave it to the dealer and I get the diagnosis tomorrow but replacing the engine might be neccessary.

Engine Swap Questions

Use stock computer

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

IIRC he used the stock computer with a 3.6 flash and a stand alone controller for the Variocam control...but otherwise I believe his is a cable throttle 3.6 now.

Engine Swap Questions
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.

10 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: 20261026T133652Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi there, I posted a while ago about some problems with my car. Anyways, I gave it to the dealer and I get the diagnosis tomorrow but replacing the engine might be neccessary. I have a '99 3.4 Tip. Can I put in only another 3.4 or can I put in a 3.6 too? How much should I spend/where should I buy? Does it matter if it's a tip or manual? I have done engine swaps on 993's in the past, is the 996 more difficult?

POST 3 / ORIGINAL POSTEROriginal post

Quotes source post: 5230913

no e-gas.

POST 4Original post

Anything other than a mechanical throttle 3.4 will involve throttle pedal sensor, wiring, and DME changes, which will be more complex in the case of a 3.6.

POST 5Original post

Quotes source post: 5230999

+1 bmartini, it is far from impossible but this does complicate the swap. There are several threads on Renntech about this (IIRC).

POST 6Original post

Quotes source post: 5230828

I asked about this with my new engine. It was not cost effective due to many parts needing to be updated along with the new engine. IIRC, this includes new control computer(s) which were pretty expensive. I didn't ask about any physical modifications that needed to take place to "merge" the new engine into my car. If you go that route, please keep us informed! Good luck, -td

POST 7Original post

search for posts by Paul 996. He recently put a 3.6 in his '99 non e-gas car and outlined a bunch of the necessary updates required. IIRC he used the stock computer with a 3.6 flash and a stand alone controller for the Variocam control...but otherwise I believe his is a cable throttle 3.6 now. Andy

POST 8 / ORIGINAL POSTEROriginal post

nah, my interest is purely financial. i found a 3.6 at a good price but if the 3.4 is easier to swap than that is that. i am doing the labor myself, i don't want more work than necessary. still haven't heard back from the dealership after two days... deep down i still have a little hope that the problem is something repairable, but i think my motor is toast. it's a metal on metal tapping sound, like nails on a chalk board to a pcar owner.... oh well, so far, i am checking out pelican and ebay. any other good places?

POST 9Original post

Wasn't more fun when any engine from GM, Ford, or Mopar with fit in any of their cars with minimal mods. Motor mounts, a bigger radiator, maybe a few different pulleys and belts and you were good to go. Even if you needed to swap out the tranny, it was a bolt in and way less expensive then an new ECU

POST 10 / ORIGINAL POSTEROriginal post

f*ck yah. but this is the world we live in. frankly, i miss the 993's. i wish they didn't look do outdated.... :-(

This is a source reference. Confirm exact model applicability in the original material.