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YOUR RESEARCHTop transmission gear replacement. Aftermarket non-plastic option. - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Replace broken top transmission plastic gears
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Suggestion · Original poster
On round 2 of replacing broken top transmission plastic gears.
Top transmission gear replacement. Aftermarket non-plastic option. - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Leading evidence: 'Replace broken top transmission plastic gears' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace broken top transmission plastic gears' (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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Suggestion · Original poster
For the price of rolling the dice on a used unit off eBay, I could also replace with brass gears that I stumbled across.
Top transmission gear replacement. Aftermarket non-plastic option. - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Use delrin gears instead of metal
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Suggestion
Ever wonder why Porsche chose to use Delrin gears instead of metal?
Top transmission gear replacement. Aftermarket non-plastic option. - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Use these
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Top transmission gear replacement. Aftermarket non-plastic option. - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Generation: 20261027T060112Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi all,
On round 2 of replacing broken top transmission plastic gears. For the price of rolling the dice on a used unit off eBay, I could also replace with brass gears that I stumbled across. This seems way more reliable and not something I’d have to touch again most likely.
What’s the consensus on brass/steel aftermarket gears?
Here’s one I found on eBay:
https://www.ebay.com/itm/284765158336?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=Jr-yh-w1QEm&sssrc=4429486&ssuid=Y6MlC0EuS96&var=&widget_ver=artemis&media=COPY
(No affiliation) also happy to support a sponsor vendor or take recommendations on alternatives as well.
Found this set of steel ones for the price of just 1 above. Anyone used these before?
https://www.ebay.com/itm/363889557782?_trkparms=amclksrc%3DITM%26aid%3D1110 006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D25314 4%26meid%3D8095e47f6ead462cab019c459b91a742%26pid% 3D101196%26rk%3D1%26rkt%3D12%26sd%3D284765158336%2 6itm%3D363889557782%26pmt%3D1%26noa%3D0%26pg%3D204 7675%26algv%3DSimplAMLv9PairwiseWithPLXWebFitmentF ilterConfirmFitSignalV2&_trksid=p2047675.c101196.m2219&amdata=cksum%3A3638895577828095e47f6ead462cab019c4 59b91a742%7Cenc%3AAQAIAAABEPYpaD8nYPH81DuZHNSX7lkZ 7%252Fj5mtRzXG6BtgnQ878e7BDosKQZZxEbE6miQX5LMoNqGW l4um1MkbSEJd3Z3wS0Bm%252FaF22%252FFZs7ddrJr4vn1STd 8iOpulT%252FpUEKHCkT010K%252BtrW8ADyNiwsFyZXkWnn%2 52BnwBfA32%252FS%252BzfZE3RkChHroRC7ec7Yg6Rot8G6aP NT1FquJwzaP8w7yFRF1%252BsXrKYS7UKJT7JDeTK%252FOw49 VrXYM1bFdDJpcWCfD116x%252Bcmkx5JZZgbVoqogevH50MPn2 ZYV3%252FiSRq0r7pa4RMUSG%252BGkggGwSZzI2%252BjHAHX dPofbehjDgWsaReDQCJn9Vkobm91vJtI%252Bk0WRP7jWNNaNa %7Campid%3APL_CLK%7Cclp%3A2047675
Yes I have lol! Posted this for that exact reason. I’m assuming by your response JFP and lack of replies that consensus is “bad idea”?
What’s interesting to me though, is that every other gear in the mechanism is metal. So why is that ONE gear plastic? Genuinely curious.
It is the planned failure point the gives out before the top motor ends up bending up other components, like the clamshell, when something gets bound up or jams.
As an engineer, you will always want to design in a sacrificial element as a safeguard. Something that will protect the integrity of the design if a failure occurs...and it always does. These gears serve that purpose. DO NOT go with metal gears.
This is a source reference. Confirm exact model applicability in the original material.
