10-1331 or 10-1371?

[b-tyme]

I did some checking in the archives and found two numbers for the master swaps, 10-1331 and 10-1371. The local napa had the 1371 so I tried that one. I am having some issues with getting a good pedal. Is this from using the 71 instead of the 31? I havent had a chance to power bleed them yet. I am going to pull the wheels and check everything else as well. I lost the brakes driving through a pond so I am not sure maybe it is a different problem than just the master. Maybe there is a fish stuck in the drum..........or that bottle of crown royal I was looking for.

[brute4c]

the 1331 is the one I have seen often listed...found this infor at Napas website...

10-1331, bore diameter, 1.125 (1 1/8th) inch

10-1371, bore diameter, 1 inch

The 1331 would move more fluid with the same amount of pedal being pushed...seems that would help...

[Binford]

Here's what I'd written after doing my master cylinder upgrade. Text pulled off another thread.

Early Chevy 1-ton van mc. New (not remanufactured) version of #10-1331. NAPA # UP36246.

Here's the whole thread: Master Cylinder Conversion - Upgrade

[b-tyme]

Got the wheels pulled and found the brakes were shot. They were packed with mud and when we went through the pond I think it loosened everything up and the mud was like sandpaper. It wore them right down to rivits. I am going to try to get them relined instead of doing the conversion. I only got 203 miles out of the last set. In their defense about 25 miles of that is in the pits. I wont be so lazy next time and I will pull the drums after a play session.

[randyscycle]

I wont be so lazy next time and I will pull the drums after a play session.

Good idea. After every trail session that involves any mud, I jack 'er up and pull all four drums and rinse everything out. Sometimes after a lot of mud I only find a small amount in there, and sometimes after only a little mud, I find them pretty caked up. Either way, it keeps everything happy.