Just wondering what the rules might be regarding removing all the solid brake lines and replacing them with braided line.

Cant find much info on the MOT legality of them.

I would have thought it would be ok, there still pretty solid themselves (had to cut through them on a mates golf)

Well mine has gone through a few MOTs now with one solid and one copper brake line at the back.

It's not the setup I'd choose though. I've just not got around to having a copper line put back in.

See, I didn't think anything of it when the long overbraid brake line was fitted. But it turns out that steel overbraid makes a pretty good hacksaw when it's attached to moving parts.

The guy who fitted it threaded it through part of the chassis, and over 10 months it gently cut its way through where it was mounted.

But it didn't stop there, it started cutting the next thing it touched too. The other copper brake line. This eventually split, on the A14, as I trod hard on the brake pedal to slow down for a traffic jam. Pretty unnerving having the pedal go soft under your feet at 50mph! Had to slow the car on the handbrake and what was left of the brake pressure on the pedal.

As a temporary measure it's wrapped in thick heavy duty plastic which is then put back through a loop under the car and touch wood I've not had any problems since. But I have a short hose to go on, and when I get around to it I'll put a copper line in too.

cymro this is what I'm doing on mine and as they are rally designed if you get the right ones I'm sure its fine i couldnt find anything saying it wasnt allowed as i will be using full braided ones with silicone brake fluid on the polo as soon as I've finished my conversion. they can handle a higher pressure than copper hardlines anyway

Yeah as an append to my last post, mounted properly they'd be fine, but don't allow any movement or it can get messy.

I read on another forum about the hacksaw effect the can happen to insecure lines.

Mainly want to do all the rear beam (same conversion as Pete) but thought why not do the whole lot. Especially as all the hard lines are most likely 20 years old.

Anyone recommend a supplier?

I've looked at build a hose, and ebay as I plan on doing the fuel lines too.

Is there also such a thing as a four outlet master cylinder? (Polo's have 2 fittings as standard)

Thanks for the info so far guys.

I'm running a g60 22.2mm mc which was £40 odd from gsf and that has 4 outlets and I run off all 4 and it's also an upgrade from the standard mc as its bigger

What's the advantage of replacing the solid lines with braided ones?

Pete is correct, golf 22.5mm mc has 4 outlets. I assume you have a servo? If not, watch my build thread over the next few weeks to see how I got round the reservoir problem!

Ye I've got a servo.

What's the advantage of replacing the solid lines with braided ones?

Easier to fit than trying to bend one continuous piece of metal between the front and back.

They also look prettier

Flexible hose is usually a compromise.

On the design of road cars, there's lots of silly measurements for the jump hoses/flex hoses, for wheel clearance, bend angles and such.

You'll find cheaper road cars have rubber hoses, but bette ones have braided ones (I'm sure you're aware why, but) this is to do with brake performance and pedal feel.

Rubber hoses expand under pressure, this could be exerted through the piston for better braking. But performance is lost in the hose.

Braided lines are generally stronger, and allow for this expansion a lot less.

Some braided lines have a different centre to others (okay so it's braided on the outside which protects and reduces expansion under pressure) but the centre material with the fluid in could still expand.

IMO you'll be fine doing this, I'd imagine people do it with kit cars.

Just be wise choosing your pipe, and remember its likely going to be a lot more expensive than copper/steel hard pipe replacement.

it annoys me when people make copper replacements themselves on showcars, and all the bends are a bit shit and it let's the car down tbh.

Aesthetically the braided ones could look a lot nicer, providing you mount them properly, which I'm sure you would anyway! :)

^^You dont NEED to but you WANT to... tis all money :( .

Ben why did i go pod this weekend .. Really want a AFH in now after watching the strip lmao ..

Did alrite in the Gymhana though, got a better time than a evo lol

id run kunifer lines inside the car and use braided hoses in the regular places. would probably be more expensive to run simple braided hoses throughout and i cant see any benefit whatsoever

buy my block ... headsgasket and had major service not long ago lmao

Could cam it and run it on gt managment ... comes with 4-2-1 stainless mani,

Just need to save up for a afh :( lol