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ptmachine
12-13-2009, 05:21 PM
Here are some pictures of the replacement master cylinder and the resevoir I had to make.

http://i175.photobucket.com/albums/w126/ptmachine/DSCN0258.jpg

http://i175.photobucket.com/albums/w126/ptmachine/DSCN0259.jpg

http://i175.photobucket.com/albums/w126/ptmachine/DSCN0260.jpg

Here is an image of the adapter plate I made so I mount the new master in the same place as the old one. BTW the old one is on the left
http://i175.photobucket.com/albums/w126/ptmachine/DSCN0262.jpg

I had to replace the plastic resevoir with aluminum (6061) because the plastic one was too tall and interfered with my steering column.

jdunmyer
12-13-2009, 05:23 PM
Nice job!

What sort of vehicle is it for?

ptmachine
12-13-2009, 05:28 PM
It's for a 1948 Studebaker 1.5 ton truck. The doner master cylinder and calipers are off a '99 and newer chevy 3/4 ton silverado. Neal



Nice job!

What sort of vehicle is it for?

winchman
12-13-2009, 05:49 PM
Are you upgrading the entire braking system to match the new master cylinder?

If not, how hard was it to select the right donor master cylinder? It seems you'd have to take into account all the differences to come up with one that would work:

Drums vs discs, standard vs power, single vs split system, etc.

Roger

aboard_epsilon
12-13-2009, 06:00 PM
i dont see any breather holes on them

all the best.markj

ptmachine
12-13-2009, 06:12 PM
The master cylinder and front calipers are matched. For now I am not worried about the rear drum brakes. I just want to drive it!!!! I plan on replacing the entire rear end (because ring and pinion gears are not available) in the future. The new rear ends brakes should match the master cylinder and if not, an adjustable proportion valve and residual valve should make up any mismatches. Neal


Are you upgrading the entire braking system to match the new master cylinder?

If not, how hard was it to select the right donor master cylinder? It seems you'd have to take into account all the differences to come up with one that would work:

Drums vs discs, standard vs power, single vs split system, etc.

Roger

Arcane
12-13-2009, 06:18 PM
Ditto on the breather holes. Nice job on the pots though! :)

Bill Pace
12-13-2009, 06:28 PM
Now we need a couple pics of that truck! That sounds like a cool ride!

ptmachine
12-13-2009, 06:32 PM
And I though no one would notice! Yes you are correct; there are no breather holes because I am not done yet. I need to drill and tap the caps for 1/8 npt to accept fittings to go from pipe to barbed. I will then use tubing to go to a remote reservoir mounted high on the firewall where it will be easier to monitor the fluid level and will also eliminate the need for a residual valve. Neal



i dont see any breather holes on them

all the best.markj

ptmachine
12-13-2009, 06:50 PM
In keeping with the spirit of the season here are a couple of old pics. Enjoy! Neal

http://i175.photobucket.com/albums/w126/ptmachine/DSCN0100.jpg

http://i175.photobucket.com/albums/w126/ptmachine/DSCN0099.jpg



Now we need a couple pics of that truck! That sounds like a cool ride!