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 Posted: Sep 28, 2017 04:15PM
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If you want to use brake line the copper/nickel extra bendy line is available in 25 foot coils from any decent auto parts store

 Posted: Sep 27, 2017 06:01PM
kd
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CA
Mini spares sells replacement

HYDROLASTIC NYLON FLEXIBLE PIPE

  Part number FSP3 , we used these on a hydrolastic innocenti.

Keith & Deb

Avatar:Turn 1 at the Glen

 Posted: Sep 27, 2017 08:57AM
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GB
I've used 8mm copper pipe and brass compression fittings in the past.

 Posted: Sep 27, 2017 07:53AM
mur
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The lines will be corroded on the inside and will have other failure points in short order.

You can make new lines by ordering tubing from an industrial supplier. You can measure the tubing to confirm the size, and then with appropriate tools like a bender and flaring tools you can make new ones.

Like any other system on any car, you can do it correctly and have years of service.

 Posted: Sep 27, 2017 04:24AM
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US
for now, you only need to patch the leak with a section of pipe.  Have someone pump it while you watch for the fluid pissing out. It's likely only a small crack in the pipe.

 Posted: Sep 27, 2017 04:21AM
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OK, It appears that the bags are ok.  The right side pumped up fine.  Although, the right side steel line is corroded on the outside.  The left side pumped up, but leaked and I imagine that the suspension will settle down to the tires hitting the fender wells very soon.  They have high pressure nylon lines at my hardware store.  I may try that or steel brake lines, but the steel brake lines are not long enough so I would have to couple 2-3 together.  I could save the end fittings from the current steel lines and maybe fit them to the new lines.  Don;t know about the exact fittings I need.  Also, I do have four extra hydro bags, two are good and two need work.  

Dogscarf

 Posted: Sep 26, 2017 07:50PM
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US
if it's in the steel lines, but some steel line same diameter and compression fittings.  If it's the rubber hoses, you'll have to remove the bags and hoses and take them to a shop that does hydraulics.  If the hose came off the bag, the fix it to drill out the hole, tap it, fit it with a threaded fitting that can mate to the hydraulic hose.  Get advice from the hydraulic repair shop.

 Posted: Sep 26, 2017 06:19PM
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It depends on where you are fixing it and if you want to only do it once. There is a LOT of pressure, around 300 psi in the lines. I used barbed fittings with power steering pump clamps. They give you extra holding power. My brother in law used a high pressure plastic line and hasn't had trouble.

If I ever have failing lines I'll likely replace the metal line the length of the car and update the fittings to something that fits the existing bags and holds tight to the line. I was able to fit a union directly on the stub coming from the rear bag. That worked really well and hasn't given me any trouble yet.

Good luck. Can't wait to hear the other input.

Mark Looman, Ada Michigan 1967 Austin Cooper S
 Posted: Sep 26, 2017 05:05PM
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Fellow Minioids,  The hydrospastic system is leaking on the left side of the 1965 Mini I dragged home last week.  The right side pumped up fine.  The left side pumped up higher than it was, (which was all the way down), but then started leaking from the pipe. Can I just get some brake lines to plumb up across the bottom of the car, or do I have to order the custom-made hydro lines?  Also, what diameter are the lines I need?

Dogscarf

1965 Mini Cooper Deluxe
1967 Morris Mini Cooper S
1968 Morris Mini Cooper S