4 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHlongevity of 993 t4 turbos? - Page 1 - Porsche General - PistonHeads UK
Leading reported evidence
Replace gear v.v.quick - 2nd gear is bad enough
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
I must admit I never floor it in 1st - I'd simply hit the rev limiter before my brain would even begin to register that I need to change gear v.v.quick - 2nd gear is bad enough.....
longevity of 993 t4 turbos? - Page 1 - Porsche General - PistonHeads UK
Read full discussion summary
Leading evidence: 'Replace gear v.v.quick - 2nd gear is bad enough' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace gear v.v.quick - 2nd gear is bad enough' (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
I remember someone had to replace theirs at about 165K miles.
longevity of 993 t4 turbos? - Page 1 - Porsche General - PistonHeads UK
Run dry and keeps them relative cool
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
So if they're still spinning when the engine is turned off - it stops them running dry and keeps them relative cool.
longevity of 993 t4 turbos? - Page 1 - Porsche General - PistonHeads UK
Run turbo's
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
One great thing about the 993TT is that even if the engine is switch off they is a separete oil pool system to run the turbo's.
longevity of 993 t4 turbos? - Page 1 - Porsche General - 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.
Replace gear v.v.quick - 2nd gear is bad enough
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
I must admit I never floor it in 1st - I'd simply hit the rev limiter before my brain would even begin to register that I need to change gear v.v.quick - 2nd gear is bad enough.....
longevity of 993 t4 turbos? - Page 1 - Porsche General - 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.
4 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: 20261026T120458Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Dunno - long time though. I remember someone had to replace theirs at about 165K miles. Have a look on the rennlist archives.
BUT it mainly depends on how they where used. One great thing about the 993TT is that even if the engine is switch off they is a separete oil pool system to run the turbo's. So if they're still spinning when the engine is turned off - it stops them running dry and keeps them relative cool.
Turbo Technics reconidition T2 turbo's at a fraction of the price of new ones - I imagin when there are some 993TT need doing (not for a while yet) they may start doing these.
That'll be 3K at an official porsche center and half that at a specialist I would of thought no?
Cheers bosshog. I have faith in Porsche engineering myself, but just flagging a concern over some t4 owners comments I've read. Some were worried about using them everyday due to turbo wear and replacement costs.
One other little concern I have too is the gearbox. I know your not supposed to nail the throttle in first as the pinion can't take too much torque. Porsche strengthened the gerbox in 1997, so I'm assuming older cars will be at some risk to failure, to a used purchaser's point of view. A replacement must cost a small fortune! Any comments on this?
As far as the turbos' go - I don;t think is very common at all. I've only heard of one case. Perhaps call up some specialist and ask if they every do much work in this area. Personally I find the whole point of 993TT is the fact you can use it as an everyday car. If it was just for the weekend then a more race-car experience would of been sort out (ie 993 RS or GT2 - if only..). I wouldn't worry about it.
I've heard about the 1st gear issue, and there is a test, but it escapes me how to perform it (I read how to do it on the web somewhere). Drive the car, if 3rd to 1st change is smooth and obviously 1st to 2nd is good then I wouldn't worry about it. I must admit I never floor it in 1st - I'd simply hit the rev limiter before my brain would even begin to register that I need to change gear v.v.quick - 2nd gear is bad enough.....
