Brake Set/up

[Edp 67 3 Cars]

I am currently building a 205 GTi6 and I'm trying to figure out the best option for the brake department. The car will be mainly for road use but you never know in the future a track day might happen. Its also going to be a standard GTi6 engine but again in the future who knows

 

I am going to run full braided lines from the M/C straight to the 4 calipers. I am using a GTi6 front set up and a standard 1.9 rear set up. I want to lose the rear compensators and put a bias valve in the engine bay. I've just mocked up this little drawing to show what i'm thinking and thought I would see what your opinions are. I have done various searches and see Anthony is running without a bias or compensators and he says its fine but there is also the opinion of the rear locking and spinning out.

 

In the drawing I would use a 1.6 M/C and T to the rear calipers.

 

 

Cheers Ed

[welshpug 1,657]

looks spot on, as you mentioned there are some not using any sort of compensator/bias valve, a bit dodgy IMO unless its a pure race car which will never carry any more than a navigator and spare wheel/toolkit as the amount of luggage/crap in the boot affects the balance of the car drastically.

[Edp 67 3 Cars]

Thanks for your opinion welshpug, i think thats the set up to go with as no one has disagreed

[Martin W 0]

I was planning to loose the rear compensators as well and use a bias valve. It is a track car though so only ever has (or can) have 2 people in.

[smighall 1]

That's how i've got mine setup fella. Although i'm using a 23.8mm MC

[Martin W 0]

That's how i've got mine setup fella. Although i'm using a 23.8mm MC

23.8mm MC is the only way to go with GTI-6 calipers

[Anthony 1,003]

looks spot on, as you mentioned there are some not using any sort of compensator/bias valve, a bit dodgy IMO unless its a pure race car which will never carry any more than a navigator and spare wheel/toolkit as the amount of luggage/crap in the boot affects the balance of the car drastically.

Not dodgy at all in my experience - I've done just about every extreme with a GTi-6 front and uncompensatored rear setup, from wet and dry trackdays, to the daily-commuter through to lugging engines, beams and whatever else in the boot and never once had any problems...

[Higgy 0]

Not dodgy at all in my experience - I've done just about every extreme with a GTi-6 front and uncompensatored rear setup, from wet and dry trackdays, to the daily-commuter through to lugging engines, beams and whatever else in the boot and never once had any problems...

 

Here here. I've had no problems.

 

Higgy.

[Daxed 7]

Will the larger master cylinder fit with a GTI-6 lump?

[Richie-Van-GTi 71 2 Cars]

should fit, the overall dimensions dont really differ vastly, its the internals that differ.

[funkymofo 0]

what car does the 23.8mm MC come off? Gti6 by any chance?

And what exactly does a bias valve do?

 

Sorry for the thread hi-jack but I'm doing the same project as you so might aswell use this opportunity to learn!

[Anthony 1,003]

what car does the 23.8mm MC come off? Gti6 by any chance?

Most people source them from a non-ABS 406, which are 4 port and bolt straight on if from a pre-1998 car.

 

And what exactly does a bias valve do?

Adjusts the front to rear brake bias - ie allows you to adjust how much braking the rear wheels do

[funkymofo 0]

cheers, should of known the brake bias control from good old gran turismo. d'oh!