56 minutes ago, Terrapin Z said:

 

I have this one on HLS30-00903. 

I LOVE the fact that the front reservoir is a bottle of bubbles!!!  

 

zKars 1,914

Replied: February 24

How’s it going? Good to hear from you.

All the brake line fittings are M10x1.0 including the one ones on the bottom of the master.   The lines them selves are 3/16 tubing. I use the copper nickel line and buy it from thestopshop.com, usually through Amazon.

 

Jim @zKars and @Patconrecently helped me get the materials to do the job right. Make sure you use or order the M10x1.0 fitting on the copper nickel tubing. You can buy a bender or carefully bend em by hand. I had my machine shop make me a couple that I bent into shape. You can also buy straight lines already made in different lengths and bend those. You need to make sure they are square to the female receiver to make a secure leak free joint.

11 hours ago, Captain Obvious said:

I'm working on an early master cylinder now. @inline6 How did yours turn out?

I had to resort to drastic measures to get the rear circuit piston out... Anyone got a half dead early master cylinder around they would offer up as parts? I could use one of these:

Also, the valve seats for the output check valves... Mine are stuck in there. How did you get these out?:

 

And just to make searching easier, here are a couple master cylinder related links:
https://www.classiczcars.com/forums/topic/68100-master-cylinder-anomaly/
https://www.classiczcars.com/forums/topic/66276-brakes-dragging/
https://www.classiczcars.com/forums/topic/66168-brake-master-cylinder-identification/
https://www.classiczcars.com/forums/topic/21826-brake-master-cylinder-240z/

 

I think mine turned out nicely.  I will have to wait and see when I actually put fluid in the system and bleed it. 

By the way, getting the new seals on can be difficult, but they are made out of some amazingly tuff stuff.  I found that using straight dishwashing liquid on them made it possible to stretch and slip them into place where they needed to go.  

To get the sleeves out, I believe I chucked the master cylinder in my glass bead cabinet (after cleaning any wet gunk off with lacquer thinner).  Stripping all of the corrosion off of the casting as well as those little parts made it much easier to get them "unstuck" from where they sit.  

 

Thanks for the input everyone. @Terrapin Z, I'll reach out about that cylinder you have.

And @inline6, did you have to pry those valve seat sleeves out, or did they pretty much fall out after you had cleaned everything up?

They fit loosely.  They drop out if you turn the cylinder upside down.

 

21 hours ago, inline6 said:

They fit loosely.  They drop out if you turn the cylinder upside down.

Got it. Well, that may be how your life goes, but that's not how stuff works for me. Hahahaha!!   

I'm gonna toss the master in the ultrasonic cleaner and see what happens after that. If I can't get those valve seats out, I'll just leave them alone. As long as they are clean, they don't seem to be causing any trouble.

On 4/16/2024 at 10:13 AM, Captain Obvious said:

I'm working on an early master cylinder now. @inline6 How did yours turn out?

I had to resort to drastic measures to get the rear circuit piston out... Anyone got a half dead early master cylinder around they would offer up as parts? I could use one of these:

Also, the valve seats for the output check valves... Mine are stuck in there. How did you get these out?:

 

And just to make searching easier, here are a couple master cylinder related links:
https://www.classiczcars.com/forums/topic/68100-master-cylinder-anomaly/
https://www.classiczcars.com/forums/topic/66276-brakes-dragging/
https://www.classiczcars.com/forums/topic/66168-brake-master-cylinder-identification/
https://www.classiczcars.com/forums/topic/21826-brake-master-cylinder-240z/

 

When I got mine,  it was frozen as well. Let it sit in a bucket of wd-40 for a few days, then put it in a vice and used an air compressor to blow everything out. It cleaned up nicely, with no issues.

On 4/16/2024 at 6:25 PM, Terrapin Z said:

I have this one on HLS30-00903. 

So I talked to @Terrapin Z in PM about this cylinder, and I completely glossed over the fact that........ It's the later style and is completely different inside than what I'm working with. So unfortunately, I'm out of luck.

And a little embarrassed that I didn't notice it until now.  

5 hours ago, Captain Obvious said:

So I talked to @Terrapin Z in PM about this cylinder, and I completely glossed over the fact that........ It's the later style and is completely different inside than what I'm working with. So unfortunately, I'm out of luck.

And a little embarrassed that I didn't notice it until now.  

What characteristics are you looking for? I have a box I can look through

5 hours ago, Captain Obvious said:

So I talked to @Terrapin Z in PM about this cylinder, and I completely glossed over the fact that........ It's the later style and is completely different inside than what I'm working with. So unfortunately, I'm out of luck.

And a little embarrassed that I didn't notice it until now.  

Sorry about that CO, the car had been frankencared at some point in it's life, I bought it for the early parts that are on there but not everything is original year wise.

On 4/19/2024 at 2:23 PM, Terrapin Z said:

Sorry about that CO, the car had been frankencared at some point in it's life, I bought it for the early parts that are on there but not everything is original year wise.

No, no. No apologies necessary!

When you posted up a pic of that master cylinder, my immediate thought was "Weird... Why would someone switch the plastic reservoirs from F to R?" Well the answer is "They didn't. It's a new style master that has the "F" closer to the firewall. Duh."  Couldn't see the forest through the trees!

Oh. and the hardware arrived over the weekend. Looks great. I'm sure there will be something in there I can use for my starter. And the level of patina is perfect! Thanks again @Terrapin Z

On 4/19/2024 at 2:14 PM, Patcon said:

What characteristics are you looking for? I have a box I can look through

I'm looking for some of the guts from a master cylinder that looks like this. Note that it has the two output ports located between the two reservoir tanks:

Hopefully one that comes apart without a permanently disfiguring fight because it doesn't look like this inside: