Whats the lifespan of the solid brake lines on minis?
I've got replacment hoses, and have rebuilt brakes with new whatevers,
but what should I do about the other bits?
Obviously if it broke while disassembling, is rusty or dented / damaged I will replace,
but how hard is it to do the whole lot, or if it looks okay is there still a need to do so
while the car is in bits?

Thanks.

Short answer

No its not necessary unless they are rusty or damaged as you already commented on.

This is something that is an issue in Britain where they do rust out brake lines and its a major inspection issue and commented on in British restoration books.

Better things spend your money on unless you find a pipe needing replacement.

I've spent more money on the braking system for my car so far during the build than anywhere else on it!

[quote="Harley"][quote="Mike_Byron"]Better things spend your money on unless you find a pipe needing replacement.[/quote]

I've spent more money on the braking system for my car so far during the build than anywhere else on it! [/quote]

Well run some new pipes mate.......unless you are really confident that the car has been in use continuously and the lines ain't been sitting with a mixture or water and fluid for too many years.

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"Show me the Mini!"

And, DON'T use copper!!! If goes hard, then can fatigue and crack.
Might still be road legal in UK, but not here.

Just take your old pipes to a brake shop if you can't buy new here.
<edit> a new front pipe made cost me $23.
New ones they make look like copper, but they are actually copper coated steel.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

And that's how it should be!

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Lillee - 1969 Morris Mini K