Discussion
I've now got to the stage where I'm putting new copper pipes on the old girl but aint paying £70 quid for something I can do myself for a fraction of that (I already have a roll of pipe) - all I really want is a list of unions to get as I know that they are a mix of metric and imperial?
She's a 1980 Mini City on drums all round, yellow tag tandem master cylinder with the pressure reducing valve, no servo.
Any help grately appreciated
Mr Magoo
She's a 1980 Mini City on drums all round, yellow tag tandem master cylinder with the pressure reducing valve, no servo.
Any help grately appreciated

Mr Magoo
Ben,
The metric unions are the ones on the pressure reducing valve unit. All the others are the standard imperial as on all Minis.
The problem is that the metric and imperial sizes ae just so very similar and many people have connected their pipes up incorrectly, or just tried to use imperial for all the ends, then they have fluid leaks which they try to correct by further tightening of imp threads into metric holes. The result is then stripped threads.
Whoever designed such a thread mix on safety-critical systems should be sacked. Oh, with the demise of Rover they probably have been!
The metric unions are the ones on the pressure reducing valve unit. All the others are the standard imperial as on all Minis.
The problem is that the metric and imperial sizes ae just so very similar and many people have connected their pipes up incorrectly, or just tried to use imperial for all the ends, then they have fluid leaks which they try to correct by further tightening of imp threads into metric holes. The result is then stripped threads.
Whoever designed such a thread mix on safety-critical systems should be sacked. Oh, with the demise of Rover they probably have been!
Snake the Sniper said:
Sorry if you already know this, but is the pipe actually cooper or kunifer? Copper pipe is to be avoided at all costs as it cracks. Kunifer is an alloy of copper and is the normal stuff to use.
Quite correct. It's a pity the pipes are always mis-described as copper by qthose selling them.Edited by Snake the Sniper on Wednesday 20th August 23:43
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