Brake up grade

I have a 1984 gti convertible , I would like to change the rear drums for a set of Mk2 rear disc with I have . Would I need to change the servo for a bigger one .  Thanks

No

thanks

I will need a Mk2 scirocco 16v handbrake cable ,is there anything else I will need

Yes mate put a couple of pressure reducing valves in the brake  lines to the rear brakes otherwise they will lock up far to easily

There are some on the master cylinder .So will I need extra ones

Not an expert and never done this upgrade but the received wisdom is that it's a waste of time and effort.

On the MK1 hardly any of the braking effort is done by the rear wheels its nearly all the front discs.

As already said rear discs are more powerful, so just lock up the rear wheels. By modern standards the MK1, even the Cabrio is light weight, you are not trying to stop a 2.5 ton SUV.

Better to make sure the existing system is 100% and if your really do want to upgrade fit bigger discs at front (which will need larger wheels if still on 13 inch) and/or a bigger master cylinder/servo combo.

 

But its so much better for maintenance reasons and looks better, Think 14 inch minimum wheels may be required.

thanks

The reason I'm putting discs on the rear, is that I can not get the drums to work. It has failed its MOT twice on the rear brakes. Everything is new on the brake system. Front work fine. I've swooped the circuits  round on the master cylinder, front work, rear don't. I've adjusted the wedge through the stud hole in the drum, and it still does not pass it's MOT. I've thrown the towel in, so I'm going to put rear discs on off a Mk2    . So just need advice. Thanks.       

What do i need for mk2 brake conversion. (Hanging/clamping of the callipers)