Manual transmission question.
Thread Starter
Burning Brakes
Joined: Jun 2005
Posts: 782
Likes: 45
From: Toronto Ontario
Manual transmission question.
Here's a question. Does anyone know if the 5th and 6th gearsets (drive gear & driven gear) from an MN6 can be swapped into a M12, leaving the other ratios the same?
Racer
Joined: May 2001
Posts: 253
Likes: 3
From: The Woodlands Texas
The 5th and 6th gears on the M12 and the MN6 are the same parts. The difference in ratio comes from the different input shaft gear and its counterpart on the cluster gear (counter gear.)
I believe that someone makes different gears for 5th and 6th that can be swapped in to change ratios without disturbing 1-4.
I believe that someone makes different gears for 5th and 6th that can be swapped in to change ratios without disturbing 1-4.
Thread Starter
Burning Brakes
Joined: Jun 2005
Posts: 782
Likes: 45
From: Toronto Ontario
The 5th and 6th gears on the M12 and the MN6 are the same parts. The difference in ratio comes from the different input shaft gear and its counterpart on the cluster gear (counter gear.)
I believe that someone makes different gears for 5th and 6th that can be swapped in to change ratios without disturbing 1-4.
I believe that someone makes different gears for 5th and 6th that can be swapped in to change ratios without disturbing 1-4.
How exactly does power flow through the OD gears? 1-3 are on the countershaft, 4 locks the mainshaft to the input shaft...then what? Is the countershaft extension splined to the countershaft, and the OD driven gears splined to the main shaft?
Racer
Joined: May 2001
Posts: 253
Likes: 3
From: The Woodlands Texas
The countershaft extension turns with the countershaft (cluster.) The 5/6 driven gear is splined to the output shaft. 5th and 6th on the countershaft extension are free spinning but have the 5/6 synchro assembly between them to attach them to the countershaft when each is selected.
Thread Starter
Burning Brakes
Joined: Jun 2005
Posts: 782
Likes: 45
From: Toronto Ontario
The countershaft extension turns with the countershaft (cluster.) The 5/6 driven gear is splined to the output shaft. 5th and 6th on the countershaft extension are free spinning but have the 5/6 synchro assembly between them to attach them to the countershaft when each is selected.
Thread Starter
Burning Brakes
Joined: Jun 2005
Posts: 782
Likes: 45
From: Toronto Ontario
So I'm pretty much screwed. The aftermarket OD gearsets that are available are even less overdriven than the M12. I want more to make up for the lower rear gears I'll put in this winter. I like to take long road trips during the summer, and dont want to kill my C5's sweet cruising abilities.
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