New flexi hose doesn't fit!

[Oldmogman]

Tried to fit a new rear flexi hose and found the existing union on the copper brake pipe is a different thread size to the internal thread on the female end of the flexi hose.

Yet the end that goes into the brass three-way union fits fine and the old nut fits the wide threaded portion on the other end to locate it to the bracket.

The pipe is made by TRW (the braking brand of Lucas, I'm told), part number PHC173C, and says on the box it fits Minors from '62 to '71. It doesn't specify whether it's for front or rear but I'm 99.9 percent certain that the Minor uses the same hose front and back.

Has anyone else experienced similar? I don't want to change the union!

Thanks all

[panky]

The front hoses have a Whitworth thread, not sure about the rear but most probably the same. Maybe your hose and pipe has been changed in the past for a different thread type.

[Trickydicky]

Have you got one for a van by mistake or vice versa?

[bmcecosse]

The front hoses are NOT the same as rear. Fronts are UNF thread. Rear is BSF thread.

[panky]

The female end of the front hose is a Whitworth thread, at least it is on my traveller and so were the hoses I got from ESM. I had to replace the short pipe from the hose to the brake switch connection and the unions were different on either end.

[bmcecosse]

I think it depends if pipes have been renewed in the past. Mine are UNF. They may be Mini hoses. The cylinders are certainly UNF.

[panky]

Yep cylinders are UNF. I guess the thread on the other end of the hose is another one of those odd sizes that seem to crop up - like the oil pressure sender, a hangover from previous Morris models maybe. I actually managed to nick a couple of Whitworth ends of a 1955 Wolseley rear axle