14 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHLimited Slip Question....
Leading reported evidence
Replace dif out
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
I am thinking of changing my dif out for a limited slip unit.
Leading evidence: 'Replace dif out' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace dif out' (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.
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.
Rennlist: 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: 20261026T163944Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Why are so few 996's equiped with the manual limited slip differential? I know about PSM. I am thinking of changing my dif out for a limited slip unit. Any thoughts are appreciated... The car is almost a daily driver, 04 C2, used in the snow on occasions, 5-6 driver ed events per year. Any ideas on $$$$ and difficulty in the swap???
Thanks in advance....
Dave's C2 does NOT have PSM, and we have recently done a diff swap. Not changing gears, but entire differential casings with gears already installed.
Ive looked around and found Quaife at around $1200 or so. Im guessing that that is just the LSD unit, and not a full differential casing with gears and LSD.
This is gonna sound like a dumb question but what is the usefulness of an LSD, if any, in day to day driving. My car has one (according to the options sticker) but I'm not sure if it does me any good.
Well Tim, if you feel like you do not need it, I will gladly give you my non-LSD. Just give me the word and I will drive to meet you and swap trannys.
Chad
HEY...... Chad....I posted the thread so I get first dibs on the dif.....lol. Anyway Tim, in low traction situations ie wet or snow, the LSD will transmit power, to a certain extent, to the wheel that has the most grip. In a normal or "open" dif, power continues to be delivered to the spinning wheel not the one with the most grip, leaving you just "spinning your wheels". I live in NJ so my car sees snow on occasion. Living in TX you may not see this advantage. Hope this helps.....
Big difference. Our braked limited slip effectively cuts power by braking the spinning wheel. A good mechanical LSD can apply all of the power to the ground, and distribute torque in such a way that you lose traction much later than you would with our open diff setup.
IIRC the 40th Anniv cars are the only ones to combine PSM and a mechanical LSD. I don't know if anybody has added an aftermarket mechanical LSD to a PSM car.
Or if you don't have the sticker... the next time your car is up (in the rear) on jack stands spin one of the rear wheels. If they go opposite directions you do not have a LSD. If they go the same direction you do.
This is a source reference. Confirm exact model applicability in the original material.
