15 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHHow do I know my LSD still works?
Leading reported evidence
Install lsd
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
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0
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1
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Read evidence and context
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Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed
On a recent edition of Fifth Gear, the beardy presenter fitted an LSD to an old hot hatch, they did a before and after "test" by basically doing a standing start with a bit of wheelspin on a low traction surface ( painted garage floor ), then measuring the rubber laid down.
Leading evidence: 'Install lsd' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Adjust throttle, etc' (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.
Install two rubber marks were the same length :grin
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
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Performed · outcome unconfirmed
with no LSD one rubber mark was twice as long as the other, with the LSD fitted the two rubber marks were the same length :grin:
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
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Suggestion
The PSM would try and override what the LSD was trying to do by applying brakes, adjusting throttle, etc.
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
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Suggestion
Doesn't appear to be a massive amount online about the diff type that Porsche fits to there sports cars but if I recall correctly the diff I ordered for my 981 was described as a mechanical diff ( clutch) and my understanding is that this replaced the early type of diff (Viscous) .
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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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Suggestion
On a recent edition of Fifth Gear, the beardy presenter fitted an LSD to an old hot hatch, they did a before and after "test" by basically doing a standing start with a bit of wheelspin on a low traction surface ( painted garage floor ), then measuring the rubber laid down.
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
On a recent edition of Fifth Gear, the beardy presenter fitted an LSD to an old hot hatch, they did a before and after "test" by basically doing a standing start with a bit of wheelspin on a low traction surface ( painted garage floor ), then measuring the rubber laid down.
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
Doesn't appear to be a massive amount online about the diff type that Porsche fits to there sports cars but if I recall correctly the diff I ordered for my 981 was described as a mechanical diff ( clutch) and my understanding is that this replaced the early type of diff (Viscous) .
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
On a recent edition of Fifth Gear, the beardy presenter fitted an LSD to an old hot hatch, they did a before and after "test" by basically doing a standing start with a bit of wheelspin on a low traction surface ( painted garage floor ), then measuring the rubber laid down.
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
I don't know if its ever been replaced, but I know the old 'spin one wheel and the other should spin' test might not work on some of the newer systems?
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.
15 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: 20261026T122219Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I have an early C2 that came with a LSD - is there any test I can do (other than driving fast sideways) that will tell me if it still works? I don't know if its ever been replaced, but I know the old 'spin one wheel and the other should spin' test might not work on some of the newer systems? :eh!:
Jack the car in the air with both rear wheels. Spin a wheel. If the on other side spins in the same direction, then it works.
If it spins in the opp direction, it doesn't.
The basic test is to jack the rear of the car up and spin a wheel by hand, if they spin together the LSD is still working but I don't think this definite.
I started a thread a while ago as I wanted some more info about the LSD I had, it built into quite an informative thread.
http://911uk.com/viewtopic.php?t=101673
Mine is pretty worn but I can still feel it working, both when drifting, and when in tighter low speed corners where I can feel the car rotating into the corner in a way that non-LSD cars just don't do.
As has already been mentioned, to check the LSd was still there and the clutch plates in it hadn't already worn away completely I would go somewhere with a loose surface and see if I made No. 11s or No.1s.
On a recent edition of Fifth Gear, the beardy presenter fitted an LSD to an old hot hatch, they did a before and after "test" by basically doing a standing start with a bit of wheelspin on a low traction surface ( painted garage floor ), then measuring the rubber laid down. with no LSD one rubber mark was twice as long as the other, with the LSD fitted the two rubber marks were the same length :grin:
Find yourself a nice empty carpark with rubbish tarmac and lay some rubber down :lol:
the "car up in the air, spin wheel" procedure surely only works with a gear/torsen LSD, not with a clutch-plated one that's designed to lock only under load?
I think it was more a case of they couldn't get the PSM intelligent enough to understand what the car was doing when the LSD was 'working'. The PSM would try and override what the LSD was trying to do by applying brakes, adjusting throttle, etc.
The same issue also happens with the 996 C4. When the rears spin, the PSM drops the throttle before there's enough torque to get the VC working.
They overcame this later hence LSDs being fitted to later cars.
Doesn't appear to be a massive amount online about the diff type that Porsche fits to there sports cars but if I recall correctly the diff I ordered for my 981 was described as a mechanical diff ( clutch) and my understanding is that this replaced the early type of diff (Viscous) . Not sure if jacking the car and rotating one wheel to see if the other rotates in the same direction will work as I think that both the diff types that Porsche use only come into affect if one of the drive wheels loses traction when under power.
I am probably wrong but as I say not to much info around.
This is a source reference. Confirm exact model applicability in the original material.
