brake lines

[NOLAW]

im redoing all the brake lines in my ke20 as im running rear discs and bigger ones on the front, can i run steel braided or am i better going copper lines, and is it a complicated job or can i do it myself?

and also im running a willwood reverse swing pedal box with triple mastercylinders, do i still need a booster?

any help is much appreciated,

cheers

[Lloyd]

Which lines are you replacing? All the steel ones? If so then go to BNT or the like and ask for some bundy tube and go from there. If you just mean the rubber ones, then just go for rubber ones.

If you're doing steel then you're going to need something to flare the ends too.

Wouldn't imagine there is anywhere to run a booster with those boxes? End of the day, the cert guy is who would should be checking with

[NOLAW]

replacing everything, basically everything between mastercylinder and brake caliper

[Bazda]

Yes you will need to use Bundy line. With the correct fittings to suit all the points on the Master cylinder and Calipers etc.

You will need a brake line flare tool that does male and female flares.

Usually a place like BNT can sell you all the fittings and lines, you can go home cut it all to the right length and take it back down with the fittings just tapped to the ends where they go and get them to flare it all for you.

As for the flexi parts you will need to run the standard rubber type lines so the bundy line will run to there.
You cant use any steel braided lines!!! this is not legal. If you want to replace the rubber type lines you have to get them specially made and they are usually $180 a pair from Alert Motorsport.

[Distrb]

get up and cosy with this http://www.lvvta.org.nz/stdBrakes.pdf

will tell you what you can and cannot do with regards to modding your brakes and staying road legal .

if you replace solid lines with flexible braided lines then you must get MSNZ authority card to remain road legal.

As HRT said, go get some bundy tube, some fittings and a borrow a decent flaring tool (the ones worth using are usually $$) and tube bender and get stuck in

[pc]

The WOF brake rules are here http://www.ltsa.govt.nz/certifiers/virm-in-service/general-08-v3a4.pdf

end of table 8-1-1
and note 3

I think you can now replace flexible lines with braided ones without a cert, as long as they meet the wishy washy WOF definitions. Either way you will end up getting a cert with the mods you are making so just make sure the cert guy is going to be happy with the work you are doing.

[Lloyd]

Yeah, VIRM doesn't really cover much at all.

Basically for brake hoses: "in-service requirements for condition and performance must be met."

Which is the following...

17. A flexible hydraulic brake hose (including connections):
a) is leaking brake fluid, or
b) is insecure, or
c) bulges under pressure, or
d) is twisted, stretched, chafed or
e) external sheathing is cracked to the extent that the reinforcing cords are exposed, or
f) has metal connections that are excessively corroded, or
g) has an end fitting that is not attached to the hose by means of swaging, machine crimping or a similar process (Note 3).

Note 3: Hose end fittings that can be undone using hand tools are unacceptable.




Going by that, there is no real reason to fail aftermarket braided lines unless they're stuffed or the fittings don't aren't right.

[Bazda]

The only aftermarket braided lines you can use are the ones that are teflon coated on the outside and come with a special tag with some numbers on it which make them legal.

Alert Motorsport make these!

[Lloyd]

And the ones without tags will still get warrant

[pc]

My understanding is that the braided line issue changed when factory cars started having them, then the wording was changed, and now there is no specific wording regarding braided lines.

There probably is some specific wording in older unmodified documents like the cert manual (LVV) and Motorsport authority card still covers them if they have tags with correct standard on them.

[NOLAW]

i went to get some bundy tube today, just wondering will i be sweet with the standard size? think it was 4 1/16s or something like that, cant quite remember, its the standard size lines anyway, the reacons not many people really go with the bigger stuff, wata you guys reacon?

cheers

[NZ_AE86]

The only aftermarket braided lines you can use are the ones that are teflon coated on the outside and come with a special tag with some numbers on it which make them legal.

Alert Motorsport make these!

Not anymore! The rules have been relaxed quite a bit.

[NZ_AE86]

Standard size tube is fine. Assuming that is what is required for your brake parts.

[NOLAW]

yeah well im using mazda s6 rx7 brakes up front and s4 rx7 brakes on the rear so id say they would be standard size