Late model master cylinder fittings?

[Evan Dutch]

Hey guys,

Finishing up the 4wheel disc brake swap on my 71 Plymouth scamp. Not sure if the fittings I have in the late model aluminum master cylinder are correct. I’m using the one pictured below for the rear port, I’ve tightened it a good bit but I swear it seeps a small amount from the threads. Is this the correct fitting to use? If not, where can I find the right ones?

Thanks!

 

[Oldmanmopar]

Wrong fitting . That is for a bubble fitting used on newer and foreign lines. You need a flare fitting end.

flare fitting vs bubble fitting - Google Search

 

[Evan Dutch]

Wrong fitting . That is for a bubble fitting used on newer and foreign lines. You need a flare fitting end.

flare fitting vs bubble fitting - Google Search

Damn, which fittings do I need? Are you sure these aren’t flare fittings? Bubble flare fittings don’t have a flare at all like this:

 

[Oldmanmopar]

You can clearly see you have the one on the right. You need the style on the left. Your thread pitch is also wrong . It will fit but loose. Jus buy the master line set for your car from inline tube. Or ebay below
67-72 Mopar A Body Manual Brake Disc Or Drum Master Cylinder Line Lines Oem | eBay

 

[Evan Dutch]

You can clearly see you have the one on the right. You need the style on the left. Your thread pitch is also wrong . It will fit but loose. Jus buy the master line set for your car from inline tube. Or ebay below
67-72 Mopar A Body Manual Brake Disc Or Drum Master Cylinder Line Lines Oem | eBay

View attachment 1716208382

You can see the tapered section in the fitting I have in this picture. I can’t use the line set, the linelock requires a handmade line