Brake Pipe & Unions

[bengy1975]

Hi,
I need to order up some replacement rear brake pipe and some unions today.

Can anyone tell me what size pipe and thread I need?

Not near the car this week so can't measure it.

Thanks!

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[Gadgetman]

When I bought new lines for my car I just typed in the reg number of my car and the site automatically listed the correct parts. 
Note that brake line is often sold as straight or coiled pieces, not bent to fit your car, so you'll need a bender to fit the lines correctly.

This one doesn't look like much, but it works, and is cheap;
https://www.ebay.com/itm/A-ROG300-Brake-...SwCU1Y3shH

[hawaiianblue]

pipe will likely be standard 6mm outer diameter.

You can bend the copper/nickel pipe without a tool, but it's normally neater when you do use a tool.

[GraemeT]

Hi - look into getting one of these in the correct size for the pipe you buy : https://www.ebay.co.uk/i/252308824962?chn=ps

For operating in narrow places very highly recommended

[ffrenchie]

Does the Berlingo use imperial or DIN flares ?

[GraemeT]

Flares are the DIN/ISO type - I use 3/16" OD cunifer pipe and 10 x 1mm fittings and a 'Powerhand' tool. They come with DIN or SAE punches/dies so you need to buy the correct one. Bending tool is a D cell battery to bend the pipe around. Trick is to practice a lot first and, even the, double check you have popped the fitting onto the pipe (the correct way round) before you flare it.

[Gadgetman]

Please don't use a D cell or other plain cylindrical object to bend pipe. It ends up flattening the pipe.
Maybe 6mm brake pipe survives without deforming too much and putting restrictions on the liquid flow, but why take the chance. A flattened pipe is very difficult to 'unflatten'.
And a cheap bending tool can be found for £10.
If that isn't available, take a piece of 1" roundstock, or a broom handle and carve a 6 - 7mm wide groove with rounded bottom around it and use that.

[jj9]

I would advise copper pipe, it's a lot easier to bend and shape than the Kunifer (copper / nickel) stuff.



.

[cancunia]

Here's a debate if ever there was one....

Copper is used on a lot of classic cars as it does indeed bend more easily than steel or kunifer, and is a bit cheaper IIRC. Problem is that copper will work harden from vibration and can become brittle as a result. While kunifer takes a little more effort than copper, it's a lot easier to work than steel.

[geoff]

The advice on the classic car Forums I use is to use Kunifer and not to use copper !

My own advice would be to use Kunifer.