Brand new brake master cylinder failed, help!

[Isaiah92260]

I bought a round top Brake Master Cylinder. Assuming that was the right part I needed, my fault for going to AutoZone I guess. The only had the round top single master cylinder and a dual master cylinder. I have the 1 1/8th single master cylinder with the square top originally.... After doing research and a lot of brake bleeding, the new round top would not work! Also found out that the round top is 1 inch bite and the original square top Style is 1 1/8th bore.... Pedal down to the floor, I adjusted the push rod all the way and I had 2 inches of play before it started engaging..... Where are can I find the square style master cylinder? Or do the still make them? Or are there any more alternatives I can try before I attempt to return the brake master cylinder to autozone? Are longer brake push rods?

[cv65]

Originally Posted by Isaiah92260

I bought a round top Brake Master Cylinder. Assuming that was the right part I needed, my fault for going to AutoZone I guess. The only had the round top single master cylinder and a dual master cylinder. I have the 1 1/8th single master cylinder with the square top originally.... After doing research and a lot of brake bleeding, the new round top would not work! Also found out that the round top is 1 inch bite and the original square top Style is 1 1/8th bore.... Pedal down to the floor, I adjusted the push rod all the way and I had 2 inches of play before it started engaging..... Where are can I find the square style master cylinder? Or do the still make them? Or are there any more alternatives I can try before I attempt to return the brake master cylinder to autozone? Are longer brake push rods?

rockauto has them,http://www.rockauto.com/en/moreinfo....1324280&jsn=17

[Isaiah92260]

Would it be a good idea to rebuild the original master cylinder with one of the kits on rock auto?

[cv65]

Originally Posted by Isaiah92260

Would it be a good idea to rebuild the original master cylinder with one of the kits on rock auto?

probably easy to just get the complete one and put it in.I dont know price differance,by the time you buy kit,brake hone if you dont have one,make sure you bench bleed it, good luck, probably a u tube video on how to rebuild master cylinder,and bleed all four wheels

[PGSigns]

I think if I needed a master for one I would do the update to the duel pot and split the system. Cost is not to much to do it and the added safety is well worth the money.
Jimmy

[Slow Build]

Originally Posted by PGSigns

I think if I needed a master for one I would do the update to the duel pot and split the system.

x2

[Isaiah92260]

Thanks guys. I have to take my truck on another 120 mile trip this coming weekend and I'm not gonna have the time to do a whole dual master cylinder job because I drive the truck everyday to work, that's why I was thinking about slapping in a new one or a re build it cuz that'll only take me a good 1 in a half after work. Mostly likely get a new single for now and then do a dual cylinder job when I have a good weekend to myself

Question:
How do you bench bleed?

[cv65]

Originally Posted by PGSigns

I think if I needed a master for one I would do the update to the duel pot and split the system. Cost is not to much to do it and the added safety is well worth the money.
Jimmy

I agree,its money well spent,I personally would even mess with a single,and if I had one Id change it ,not that expensive and may save you in the future especially if its your daily driver,

https://www.youtube.com/watch?v=kEPXgDGU6_0
how to bench bleed

[Isaiah92260]

Originally Posted by cv65

I agree,its money well spent,I personally would even mess with a single,and if I had one Id change it ,not that expensive and may save you in the future especially if its your daily driver,

https://www.youtube.com/watch?v=kEPXgDGU6_0
how to bench bleed

Definitely, I have a 67 dual master cylinder a buddy gave me, I found the "splitting the lines" build thread, is was planning on getting the fittings and lines and try knocking it out on a good weekend.... Thanks