Master Cylinder

[macr0w]

Hey guys, I am still working on the brakes of my son's 1965 Imperial Crown.
I bought a master cylinder that is a dual reservoir from a 67 New Yorker I believe.
To my knowledge the ports on it are supposed to be 1/2-20 in the back and 9/16-18 in the front.
The hardware I have is "supposed" to be the same.
The fitting for the rear turns right in and tightens up like it's supposed to.
The fitting for the front turns in a little ways then stops like it has the wrong thread pitch.
Can anyone confirm the size and thread pitch that is supposed to fit the front port on this thing?
Thanks

 

[macr0w]

Also, Do I even need this distribution block?

 

[Big_John]

I always encourage everyone to have one of these in their toolbox.
https://smile.amazon.com/Grip-Threa...637509594&sprefix=thread+pitch,aps,201&sr=8-5

9/16-18 doesn't quite sound right. I'm thinking it's 9/16-20 but I could be very wrong. Give me a few to wander out to the garage and I will check.

I do know that NAPA had some short lines with the correct fittings on them, but that was a while ago...

You don't need the distribution block, but having done a couple conversions, it's a very coinvent way of getting the plumbing going in the right directions.

 

[macr0w]

9/16-18 doesn't quite sound right. I'm thinking it's 9/16-20 but I could be very wrong. Give me a few to wander out to the garage and I will check.

Yeah, the fitting I have just doesn't fit right.
The specs on the page I bought it from say the port is a 9/16-18.

https://www.oreillyauto.com/detail/...sler-new-yorker?q=brake+master+cylinder&pos=0

 

[Big_John]

Yeah, the fitting I have just doesn't fit right.
The specs on the page I bought it from say the port is a 9/16-18.

https://www.oreillyauto.com/detail/...sler-new-yorker?q=brake+master+cylinder&pos=0

9/16-20 This is checking my bleeder tubes (salvaged ~45 years ago from some car I scrapped)

I knew I had also heard it and remembered where.... Ram Man says 9/16 -20


BTW, for all the questionable products/service, he did put out a couple good videos on brakes. This is one that covers some basics.