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996 Differential gears-anyone changed them?

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7 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
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YOUR RESEARCH996 Differential gears-anyone changed them?

Leading reported evidence

Replace gearing, more so of the tranny

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Suggestion

I would love to change the gearing, more so of the tranny, but it costs SO much....

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996 Differential gears-anyone changed them?
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Leading evidence: 'Replace gearing, more so of the tranny' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace gearing, more so of the tranny' (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.

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1 matching discussions · 7 captured posts examined · 0 partial discussions

Frequently discussed actions (1)

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Replace gearing, more so of the tranny

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 would love to change the gearing, more so of the tranny, but it costs SO much....

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996 Differential gears-anyone changed them?
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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.

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

  • Rennlist: 1 discussions

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Generation: 20261026T155324Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I'd like some other experiences with these little buggers? Any out there?

POST 3Original post

I would love to change the gearing, more so of the tranny, but it costs SO much.... Good luck!

POST 4Original post

I toyed with it after blowing up my gearbox but the gear sets were $900 each....... way too much money.

POST 5 / ORIGINAL POSTEROriginal post

We have seen several differential (spider) gear sets become pitted which seems unusual, wondering if any others have had this scenerio?

POST 6Original post

Pitted spider gears are probably from lousy mfg tolerances / finish. They seem to make these rougher and sloppier than the ring and pinion. Rough finish means smaller point contact areas which = higher contact stresses. Have you ever put dye on the spiders and turned the rear? You'd probably have to take some posi clutch out to enable turning it on the bench.If you show very low contact from crummy finish, you may benefit from a REM polish or Micronite or similar. A lot of pro stock racers are doing one or the other of these to R&P sets now. Big results. If it's not a finish problem, then it could be heat treat. A self-defense for that would be a cryo treatment, bu tI'm betting it's the lousy finish.

POST 7Original post

I dont have anything to shed on the subject other than my diff has howled bad since I got the car with 55k miles, seems unusual for a factory car and a car held at such high standards. The other thing is Porsche pieces are so darn expensive, I could get diff gears for a Ford 9-inch for like a $130 a set, you cant even buy a tooth for a Porsche diff gear for that. (slightly exagerating) Powerhaus II?

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