928 S4 Manual Transmission Questions.
#1
Racer
Thread Starter
928 S4 Manual Transmission Questions.
Just a few general questions about the Manual Trans cars. I have been reading lots of stuff on the Mercedes Benz Automatics, but not much on the Manuals.
Did Porsche manufacture them?
Are they generally reliable?
What can I expect out of mine? (1988 S4)
Do they cross-reference or are they used in any other Porsches? 944?
Bascially, do they fail frequently, and if they do what are the options for spares and repairs?
Thanks for the discussion.
Did Porsche manufacture them?
Are they generally reliable?
What can I expect out of mine? (1988 S4)
Do they cross-reference or are they used in any other Porsches? 944?
Bascially, do they fail frequently, and if they do what are the options for spares and repairs?
Thanks for the discussion.
#3
1st and 2nd syncros are also prone to age/wear issues. Take good care of yours, there are not many left.
#4
Rest in Peace
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I thought it was mainly just Mark A.
I will say that the difference in the feel of a 928 between a manual and a automatic is a stunning change.
#5
928 Collector
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Ive owned one for 100,000 miles and 12 years. The original gearbox was flawless with good synthetic gear oil. Same clutch from the day I bought it, too. I replaced the original a few years ago with the rare 89s4 gearbox with 2.63 rear end because I wanted the gearing. That has been equally reliable. To me, you couldn't ask for a better gearbox.
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#8
Rest in Peace
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Ive owned one for 100,000 miles and 12 years. The original gearbox was flawless with good synthetic gear oil. Same clutch from the day I bought it, too. I replaced the original a few years ago with the rare 89s4 gearbox with 2.63 rear end because I wanted the gearing. That has been equally reliable. To me, you couldn't ask for a better gearbox.
#9
Nordschleife Master
I beat the hell out of mine too......
Quick shifts under boost, with a dual disc clutch.....
I really need to get going on new internals for these boxes.....
Quick shifts under boost, with a dual disc clutch.....
I really need to get going on new internals for these boxes.....
#10
Racer
Thread Starter
The reason that I brought up this topic, is that I used to be a 944/951 guy. In all of those years, I destroyed two gearboxes. Both from hard launches. Broken ring and pinions.
I am hoping that the 928 gearboxes are a little tougher.
I am hoping that the 928 gearboxes are a little tougher.
#12
Racer
Thread Starter
#13
Rennlist Member
As far as I know, it's only the combination of 500+HP, racing clutch and slick tyres that cause the 5th gears to let go. Plus an agressive driving style....
#15
I really need to get going on new internals for these boxes.....
Will you do several stages? And also a design that would handle quicker shifts? (not necesarily sequential).
Pls keep us updated on your progress.