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911uk

3.4 engine

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

Discussion summary

YOUR RESEARCH3.4 engine

Leading reported evidence

Install facing "backwards"

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 watched a vid a couple of years back where an American had fitted an LS engine to his 996 (?) which did not work out well, as the engine suffered bearing failure as the result of oil starvation under acceleration, given the engine is fitted facing "backwards" when fitted in a Porsche...

3.4 engine
Frequently discussed work

Check 5k miles ago

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

Hi all, Porsche purists don’t shoot me down … I have just purchased a 3.4 996 1998 130k, I’m doing a LS swap with it but would like peoples opinions on selling the current engine, it has 130k miles and been bore scoped and ims check 5k miles ago with invoice to prove.

3.4 engine
Read full discussion summary

Leading evidence: 'Install facing "backwards"' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check 5k miles ago' (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.

Read captured replies

1 matching discussions · 14 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Install ls engine

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 watched a vid a couple of years back where an American had fitted an LS engine to his 996 (?) which did not work out well, as the engine suffered bearing failure as the result of oil starvation under acceleration, given the engine is fitted facing "backwards" when fitted in a Porsche...

3.4 engine

Check 5k miles ago

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

Hi all, Porsche purists don’t shoot me down … I have just purchased a 3.4 996 1998 130k, I’m doing a LS swap with it but would like peoples opinions on selling the current engine, it has 130k miles and been bore scoped and ims check 5k miles ago with invoice to prove.

3.4 engine

Replace engine, would you do it

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

To reply to this, given the cost of replacing an engine, would you do it for one with 130K on it?

3.4 engine

Set fluids etc

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

Hartech quote was £16500 ish with a min starting cost of £3600 + VAT for the basic rebuild including removal & re-fitting, the gasket/seal set, fluids etc.

3.4 engine
Frequently discussed actions (6)

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

Check 5k miles ago

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

Hi all, Porsche purists don’t shoot me down … I have just purchased a 3.4 996 1998 130k, I’m doing a LS swap with it but would like peoples opinions on selling the current engine, it has 130k miles and been bore scoped and ims check 5k miles ago with invoice to prove.

3.4 engine

Combined work: Install facing "backwards" + Install ls engine

No successful repair reported for this finding.

0
Reported fixes
1
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that report an unsuccessful attempt
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.

Unsuccessful attempt

I watched a vid a couple of years back where an American had fitted an LS engine to his 996 (?) which did not work out well, as the engine suffered bearing failure as the result of oil starvation under acceleration, given the engine is fitted facing "backwards" when fitted in a Porsche...

3.4 engine

Install facing "backwards"

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

I watched a vid a couple of years back where an American had fitted an LS engine to his 996 (?) which did not work out well, as the engine suffered bearing failure as the result of oil starvation under acceleration, given the engine is fitted facing "backwards" when fitted in a Porsche...

3.4 engine

Install ls engine

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

I watched a vid a couple of years back where an American had fitted an LS engine to his 996 (?) which did not work out well, as the engine suffered bearing failure as the result of oil starvation under acceleration, given the engine is fitted facing "backwards" when fitted in a Porsche...

3.4 engine

Replace engine, would you do it

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

To reply to this, given the cost of replacing an engine, would you do it for one with 130K on it?

3.4 engine

Set fluids etc

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

Hartech quote was £16500 ish with a min starting cost of £3600 + VAT for the basic rebuild including removal & re-fitting, the gasket/seal set, fluids etc.

3.4 engine
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.

14 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • 911uk: 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: 20261026T194705Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi all, Porsche purists don’t shoot me down … I have just purchased a 3.4 996 1998 130k, I’m doing a LS swap with it but would like peoples opinions on selling the current engine, it has 130k miles and been bore scoped and ims check 5k miles ago with invoice to prove. What sort of ££££ should I sell it for ?? Thanks in advance

POST 2Original post

I'm not going to shoot you down, but doing an LS Swap on a 911 is like wearing crocs.....I'm not allowed to finish the joke as I'll get banned. Be a man, do a 3.7 upgrade instead. Forever desiresble and still the glory of a flat 6 behind you

POST 3Original post

out of interest how much does it cost for the LS swap

POST 4Original post

Dyno torque who have done a few now in Birmingham quoted “ it’s around £17,000 all new engine etc , that’s new engine , coils , water pump clutch etc etc makes for a great car”

POST 5Original post

Quotes source post: 2695783

wow, i was under the impression it was cheaper than having a rebuild,

POST 6Original post

After seeing these figures, if you don't do a 3.7 upgrade, you need euthanasing.

POST 7Original post

Quotes source post: 2695787

yeah, I got a price just out on interest and was surprised not much in it between a hartech rebuild and a LS. Hartech quote was £16500 ish with a min starting cost of £3600 + VAT for the basic rebuild including removal & re-fitting, the gasket/seal set, fluids etc. Additional parts needed are chargeable on top of this base cost.

POST 9Original post

Haha, I presumed they were done because people couldn't afford to get the proper engine sorted. Don't get me wrong, I think the LS engines are great, but the ones I have driven seem to be a complete opposite to what the Porsche offers, which is what makes the Porsche so much fun. Bizarre.

POST 10Original post

i'd have to question the handling afterwards as well, it's taken porsche thousands of hours of research to get the car to where it was to then change all the weight and placement can't be great , [just a thought]

POST 11Original post

I’d rather go Audi 2.7t with 450bhp than an LS.. https://www.renn27.com/components-and-services/full-integration-package

POST 12Original post

I watched a vid a couple of years back where an American had fitted an LS engine to his 996 (?) which did not work out well, as the engine suffered bearing failure as the result of oil starvation under acceleration, given the engine is fitted facing "backwards" when fitted in a Porsche... I guess the oil pickup point in the sump may have played a part..? I do think that there are a variety of sumps available for LS engines, though whether oil pickup tubes come in different configurations or not...???

POST 13Original post

Have to second the Audi choice. Lots of similar parts and so on. LS is going to be a project that never ends, and unsellable in the future, should that matter. Personally I'd go for a max oversize from Hartech. You know it will work. But hey, we all like a project, so good luck !

POST 14Original post

Quotes source post: 2695769

To reply to this, given the cost of replacing an engine, would you do it for one with 130K on it? You might if the engine was super cheap, but 1-2K would seem tops (finger in the air), with all the ancillaries included.

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