MORRIS BRAKES

[lencot76]

I intend to strip the brakes down and replace the pipes etc.What size unions are they an my 1969 Morris .I have seen UNF and BSF for sale .So I need to know when the change over was,and to what Len

[moggalot]

Should be 4 x 3/8"UNF on the front bridge pipes, 12 x 3/8"BSF on the rest.

[bmcecosse]

And use Kunifer pipe - NOT dangerous copper.......

[lencot76]

Thanks,I always use cunifer ,on all the restorations I do Len

[bmcecosse]

[lencot76]

Thanks for the info.does it matter ,what length the unions are.I remember on past restorations,some are longer than others Len

[lencot76]

When you say bridge pipes are these the ones from the front shoes to the splitter.It`s OK Morris Minors are new to me.I have had to step down,from restoring Rover P5Bs following heart ops.

[moggalot]

No, the bridge pipes are the ones that link the two front cylinders each side. Regarding copper pipes, I have never been concerned about using copper pipes until last week when I helped someone with brake failure on a Minor van and the pipe had fractured just below the flare on one of the rear pipes (union to brake cylinder). Not sure whether that would have been a faulty flare or slight movement caused by the rear cylinders moving in the backplate!

[bmcecosse]

It is EXACTLY what happens with dangerous copper pipes. The flare work hardens the copper, and then the movement fatigues it. One of mine fell off when I brushed against it with my hand when I was inspecting the underside shortly after buying the car. Get rid of any copper pipes !!!