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YOUR RESEARCHLSD in 997 GTS - Page 1 - 911/Carrera GT - PistonHeads UK
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Suggestion
Its a little unnerving that my conclusion (based on there being no part listing for the LSD or repair components) that to replace the diff would seem to require one to just buy a new gearbox was actually the resolution.
LSD in 997 GTS - Page 1 - 911/Carrera GT - PistonHeads UK
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Leading evidence: 'Repair components)' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Repair components)' (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.
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LSD in 997 GTS - Page 1 - 911/Carrera GT - PistonHeads UK
Replace diff would seem
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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.
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Suggestion
Its a little unnerving that my conclusion (based on there being no part listing for the LSD or repair components) that to replace the diff would seem to require one to just buy a new gearbox was actually the resolution.
LSD in 997 GTS - Page 1 - 911/Carrera GT - PistonHeads UK
Replace unit
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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.
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Suggestion · Original poster
Apparently Porsche supply the gearbox complete with diff unit to replace the old unit.
LSD in 997 GTS - Page 1 - 911/Carrera GT - PistonHeads UK
Replace whole lsd
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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 contain suggestions
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Suggestion
Once its done you run it as an open diff or replace the whole LSD.
LSD in 997 GTS - Page 1 - 911/Carrera GT - PistonHeads UK
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.
Repair components)
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
Its a little unnerving that my conclusion (based on there being no part listing for the LSD or repair components) that to replace the diff would seem to require one to just buy a new gearbox was actually the resolution.
LSD in 997 GTS - Page 1 - 911/Carrera GT - PistonHeads UK
Replace diff would seem
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
Its a little unnerving that my conclusion (based on there being no part listing for the LSD or repair components) that to replace the diff would seem to require one to just buy a new gearbox was actually the resolution.
LSD in 997 GTS - Page 1 - 911/Carrera GT - PistonHeads UK
Replace whole transmission was partially in jest
No successful repair reported for this finding.
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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
The comment about replacing the whole transmission was partially in jest but AFAIK Porsche don't list an LSD for that gearbox so who knows what you are meant to do in this case if you physically need to stick with Porsche parts.
LSD in 997 GTS - 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.
14 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.
1 acknowledgements have no verified action link; they do not establish a repair result.
Hi,
Just wondering if anyone has any info on what the diff is in a 997 GTS with -20mm sport PASM and locking diff.
Is it the same as the 997 GT3?
Gearbox is out at the moment so would make sense to do the diff at the same time.
Jack
The gearbox is the Aisin made unit. Theres no clutch pack available either from Porsche of aftermarket for the LSD in these things. Porsche also won't simply sell a replacement LSD either. I guess you are meant to buy a whole new gearbox
On the plus side the LSD is there to look good on paper rather than actually doing much as is the way of much of the newer cars. The electronics are meant to do its job in the main so its there simply to put a curl in peoples beards.
I believe that you can put a replacement unit from guard in though if you are serious about it.
Neil, thanks for that. So basically when it's worn out, that's it. Either replace it with another unit or let it run as an open diff?
Any data on what the pre-loads and ramps are on it, anyway?
The car has 45k on it. I look it in because of occasional graunching from 1st to 2nd. First plan of action is to replace the clutch.
No Problem.
Yes, thats the case at the moment. Once its done you run it as an open diff or replace the whole LSD.
The comment about replacing the whole transmission was partially in jest but AFAIK Porsche don't list an LSD for that gearbox so who knows what you are meant to do in this case if you physically need to stick with Porsche parts.
I suppose the real answer to that leads into the reply to the second part of your question.
As for preload and ramp rate, I assume its the same spec as the LSD used in the Caymans etc etc. This is a zero preload diff (i.e. it has no preload at all) and the ramps are essentially nothing. This LSD is not designed to actually do much in the way of any locking up - so presumably this is how one gets round the wearing out issue and the replacement issue.
It won't wear out as it does nothing in the first place and with zero preload there will be no way to test if its actually worn. Simple!!
Its really just there to look good on the spec sheet. The electronics are doing the diff work via traction/braking things.
Ok, that all makes perfect sense.
I'll have a look at the Guard stuff and see if they do a replacement.
So even with PSM switched off it's mainly the electronics controlling braking, etc that acts as the diff?
Well that solved that issue!
New gearbox (including diff) goin into the car later this week. Apparently Porsche supply the gearbox complete with diff unit to replace the old unit.
Thank god for that warranty!
Thats good news (for you).
Its a little unnerving that my conclusion (based on there being no part listing for the LSD or repair components) that to replace the diff would seem to require one to just buy a new gearbox was actually the resolution.
