The Stovebolt Site Forums The Shop Area Driveline Brake fitting

Hi, I searched online but I’m not 100% sure I got the right answer. Can someone confirm this fitting type? My rear end is out of an old Cadillac. The cylinders are eBay replacements. The threads seem to be 7/16-20 but when I look down in the cylinder hole it looks like a funnel, not a volcano. What kind of fitting goes in here? It’s not a double flare correct? Thank you

Jason, Without knowing what year Cadillac donated it's axle for your truck, it's hard to figure out what style fitting goes in there for sure. Perhaps "Otto Skorzeny" can help as he has some experience with early Caddy's???

That looks like a male flare fitting would seat correctly, Try a 1/4" male flare fitting and the other end can be inverted flare to accommodate the brake line.

I'm not aware of Cadillac having any sort of unusual fittings on its brake lines. Do you know what year the rear end is from?

Brake hoses and lines are all readily available from just about any source such as OPGI, USA Parts, etc. InlineTube supplies pre-bent brake lines with the correct fittings.

I'll see if I can find out exactly what fitting is used.

Thanks all. 1960. I don’t think it’s uncommon, I’m just getting some leakage so I’m thinking I’m not using the right fitting here. When I look down the wheel cylinder hole it’s like a funnel shape (concave) not convex (volcano shape). So I don’t think it’s bubble flare. Maybe 37 degree flare like buckshot said᠁ but when I looked at the hose on caddy daddy site it doesn’t look flared. Does anyone know what that male end is called? Thanks all for the input

It looks like a banjo bolt fitting to me. It has the large flat on the outside for the crush washer.

Yes, banjo fitting requiring the copper washer.

Thank you. Thank makes sense. So I must be missing the banjo part. I have the hose. Much appreciated

On my cars, a solid line connects to the rear wheel cylinders rather than a rubber hose.

I'll take a picture of mine if you want to see it.

I appreciate that. I think I’ve got it. Thank you again!

Not 37 degree, or JIC or AN or whatever you want to call that type of fitting. I vote copper washer as you can almost see where the other one was on the machined surface.

I asked on HAMB as well and someone said "bubble fitting", basically half of a double flare. I don't know. I think I'll have to try a few things. Thanks all.

Bubble flares are typically only found on European cars according to this website. They're not typically found on American or Japanese cars.
I've used them to keep hose and clamp connections from slipping off a tube. It's the first step in making a double flare.

I should probably apologize for not saying this up front..... I did buy the wheel cylinders on ebay.... so I suppose anything is possible regarding the type of fitting type. They do seem to be 7/16-20 as far as I can measure... so not metric.

I found a pic of cadillac cylinders on ebay. One shows sometype of copper fitting down in the hole. The other shows a copper washer and an empty hole. So wierd....

And yet, almost all manufacturers use the bubble flare as a selling point on their fancy flare machines. Go figure. Maybe because of all the Volkswagens and BMW's sold in the US??

40 years wrenching for a living and I have yet to make a bubble flare.

I'm sure you've made a few double flares in those 40 years, so halfway through making those double flares, you would have made a bubble flare. It's the middle step in making double flares. You just didn't stop at the bubble flare step.
You probably meant you have yet to USE a bubble double flare.

Definitely banjo fitting goes there.
Classicparts.com
Part #71-995A. The banjo fitting with two copper washers.
Part #71-996A. The bolt which holds the banjo fitting.

With these parts, you can use brake lines stock for the truck.

Front and rear 1960 caddy set.

A bubble flare. Used plenty of double flares.

Sorry Mark. My keyboard doesn't know how to spell bubble - or autocorrect did me in.

LOL!