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997 "gen 1.5" engine? - Page 1 - 911/Carrera GT - PistonHeads UK

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5 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH997 "gen 1.5" engine? - Page 1 - 911/Carrera GT - PistonHeads UK

Leading reported evidence

Install "gen 1

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 · Original poster
Looking at a 997 911 C2S with what is described as a Porsche warranty fitted "gen 1.5" engine in 2010.
Original post Read captured discussion
997 "gen 1.5" engine? - Page 1 - 911/Carrera GT - PistonHeads UK

Performed · outcome unconfirmed
Looking at a 997 911 C2S with what is described as a Porsche warranty fitted "gen 1.5" engine in 2010.
Original post Read captured discussion
997 "gen 1.5" engine? - Page 1 - 911/Carrera GT - PistonHeads UK

Read full discussion summary

Leading evidence: 'Install "gen 1' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install "gen 1' (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 · 5 captured posts examined · 1 partial discussions

Compare 3 other evidence results

Replace but retained metzger power unit

Suggestion or failed attempt

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
Gen 1.5 was the small window when Gen 1 Turbos got the Gen 2 PCM unit and couple of other changes but retained Metzger power unit
Original post Read captured discussion
997 "gen 1.5" engine? - Page 1 - 911/Carrera GT - PistonHeads UK

Replace there wasn't other meaningful

Suggestion or failed attempt

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
defo the IMS change, there wasn't other meaningful change until gen 2.
Original post Read captured discussion
997 "gen 1.5" engine? - Page 1 - 911/Carrera GT - PistonHeads UK

Replace until gen 2

Suggestion or failed attempt

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
defo the IMS change, there wasn't other meaningful change until gen 2.
Original post Read captured discussion
997 "gen 1.5" engine? - Page 1 - 911/Carrera GT - PistonHeads UK

Frequently discussed actions (4)

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

Install "gen 1

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 · Original poster
Looking at a 997 911 C2S with what is described as a Porsche warranty fitted "gen 1.5" engine in 2010.
Original post Read captured discussion
997 "gen 1.5" engine? - Page 1 - 911/Carrera GT - PistonHeads UK

Performed · outcome unconfirmed
Looking at a 997 911 C2S with what is described as a Porsche warranty fitted "gen 1.5" engine in 2010.
Original post Read captured discussion
997 "gen 1.5" engine? - Page 1 - 911/Carrera GT - PistonHeads UK

Replace but retained metzger power unit

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
Gen 1.5 was the small window when Gen 1 Turbos got the Gen 2 PCM unit and couple of other changes but retained Metzger power unit
Original post Read captured discussion
997 "gen 1.5" engine? - Page 1 - 911/Carrera GT - PistonHeads UK

Replace there wasn't other meaningful

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
defo the IMS change, there wasn't other meaningful change until gen 2.
Original post Read captured discussion
997 "gen 1.5" engine? - Page 1 - 911/Carrera GT - PistonHeads UK

Replace until gen 2

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
defo the IMS change, there wasn't other meaningful change until gen 2.
Original post Read captured discussion
997 "gen 1.5" engine? - Page 1 - 911/Carrera GT - PistonHeads UK

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.

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

PistonHeads: 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: 20261026T222516Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Afternoon, Looking at a 997 911 C2S with what is described as a Porsche warranty fitted "gen 1.5" engine in 2010. The wording certainly makes it sound like a gen 2 engine/cures gen 1 engine failure issues but I cannot see anything about this on the internet or have heard of it before. I can only assume really this is a gen 1 engine perhaps with something upgraded. Any knowledge in the PH masses?

POST 2Original post

I imagine the term Gen 1.5 refers to the upgraded IMS bearing Porsche started to fit during 997.1 M97 engine production ? I'd give Baz or Grant at Hartech a call and they'll be able to confirm.

POST 3 / ORIGINAL POSTEROriginal post

Thanks guys!

POST 4Original post

Slippydiff said: I imagine the term Gen 1.5 refers to the upgraded IMS bearing Porsche started to fit during 997.1 M97 engine production ? I'd give Baz or Grant at Hartech a call and they'll be able to confirm. Seems most likely. So 2006 on engines.

POST 5Original post

e46m3c said: Afternoon, Looking at a 997 911 C2S with what is described as a Porsche warranty fitted "gen 1.5" engine in 2010. The wording certainly makes it sound like a gen 2 engine/cures gen 1 engine failure issues but I cannot see anything about this on the internet or have heard of it before. I can only assume really this is a gen 1 engine perhaps with something upgraded. Any knowledge in the PH masses? defo the IMS change, there wasn't other meaningful change until gen 2. Gen 1.5 was the small window when Gen 1 Turbos got the Gen 2 PCM unit and couple of other changes but retained Metzger power unit

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