Can you tell good gearbox from bad without installing?
#1
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I have the orginial gearbox in my 924S @ 200k miles and it's showing age - there is considerable driveline slack, making it hard to drive on and off gas in 1st and 2nd (clutch and driveshatfs have recently been replaced). I can't change gear quickly from 1st to 2nd or it will grind. Ring and pinion gear are making old fighterplane sounds on accel/decel. There is loud worn bearing noise at any load, especially in right turns - I believe it's one of the output shaft bearings. Output shafts also have both radial and axial movement, is it normal?:
I'm all about diy, but I don't think it's worth rebuilding mine, I'm shopping for a lower mileage used one. I might be able to go buy 1 or 2 from Germany - are there obvious wear signs to look for when I'm there?
I'm all about diy, but I don't think it's worth rebuilding mine, I'm shopping for a lower mileage used one. I might be able to go buy 1 or 2 from Germany - are there obvious wear signs to look for when I'm there?
Last edited by Kaspar; 07-15-2022 at 05:35 AM.
#2
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No way to be sure except to install it in a car and drive it. There are many problems you will not find on a bench (e.g. bearing noises, bad or broken synchronizer rings, etc.)
When I sold transaxles here in the USA, I always tested them in my 944 mule before I could guarantee them.
When I sold transaxles here in the USA, I always tested them in my 944 mule before I could guarantee them.
#3
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I have the orginial gearbox in my 924S @ 200k miles and it's showing age - there is considerable driveline slack, making it hard to drive on and off gas in 1st and 2nd (clutch and driveshatfs have recently been replaced). I can't change gear quickly from 1st to 2nd or it will grind. Ring and pinion gear are making old fighterplane sounds on accel/decel. There is loud worn bearing noise at any load, especially in right turns - I believe it's one of the output shaft bearings. Output shafts also have both radial and axial movement, is it normal?:
https://www.youtube.com/watch?v=JuEeybpMlRU
I'm all about diy, but I don't think it's worth rebuilding mine, I'm shopping for a lower mileage used one. I might be able to go buy 1 or 2 from Germany - are there obvious wear signs to look for when I'm there?
https://www.youtube.com/watch?v=JuEeybpMlRU
I'm all about diy, but I don't think it's worth rebuilding mine, I'm shopping for a lower mileage used one. I might be able to go buy 1 or 2 from Germany - are there obvious wear signs to look for when I'm there?