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7 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

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Leading reported evidence

Replace 2nd gear syncro and also maybe the shift sleeve

Suggestion or failed attempt

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Reported fixes: 0
Unsuccessful attempts: 1
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Discussions that contain suggestions: 1

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Suggestion
You can try replacing 2nd gear syncro and also maybe the shift sleeve.
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Leading evidence: 'Replace 2nd gear syncro and also maybe the shift sleeve' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace 2nd gear syncro and also maybe the shift sleeve' (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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Replace gear oil every time i pull the motor

Suggestion or failed attempt

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Reported fixes: 0
Unsuccessful attempts: 1
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Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion
I just change the gear oil every time I pull the motor to do any clutch etc.
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Frequently discussed actions (2)

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Replace 2nd gear syncro and also maybe the shift sleeve

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
You can try replacing 2nd gear syncro and also maybe the shift sleeve.
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Transmission Refresh

Replace gear oil every time i pull the motor

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 just change the gear oil every time I pull the motor to do any clutch etc.
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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

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: 20261026T174436Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Porsche friends have a 996 C4S wanting to do a transmission refresh typical issues with synchros in 2nd gear. Anybody gone this route rather than a complete rebuild? Any idea on costs? Thx

POST 2Original post

Quotes source post: 20201172

You can try replacing 2nd gear syncro and also maybe the shift sleeve. A big press is only needed for all the other gears, not needed for 1-2 syncro assembly replacement.. Maybe also get the 3 detent *****, & springs as they're prone too go flying across the shop. If grinding 2nd gear routinely, you may need 2nd gear and its shift sleeve.... A total tranny rebuild would be best, but it takes a tech familiar with trannys. For the mechanically inclined its not a problem, just be ready to learn the particulars of the Porsche tranny. But if everything in the tranny works fine and sounds good (no bearing noise), then just a 2nd gear syncro assembly might fix your problem well.... New Porsche Tranny parts are expensive, be ready. jmo

POST 3Original post

Quotes source post: 20202259

No joke! Over $1,000 for the cheapest 1-2 gear parts.

POST 4Original post

OP - How many miles on the gearbox?

POST 5 / ORIGINAL POSTEROriginal post

Hi 105000

POST 6Original post

Damn, I have 155k with no issues. And I drive the snot out of mine. I just change the gear oil every time I pull the motor to do any clutch etc. work. Every ~40k. I do have a few gearboxes on my watch list to purchase and install when it is time to rebuild mine.

POST 7Original post

The harder I�ve driven mine the better the 2nd got! No more grinding.

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