Rear Disc Brake Conversion

[Lewis's Friend]

Hi All

I have recently bought a kit of bits from Hans to do a disc brake conversion on my S3 over the winter (which officially begins when the weather is poor for about 10 consecutive days!).

I was wondering whether anyone who has done this before has any advice/tips that I should be aware of?

It doesn't look too hard, but then I haven't started yet. I take it it is basically a case of removing the old brake assembly and hubs. Then putting in the new hubs and disc/caliper carriers, along with new 1/2 shafts to suit?

Obviously I'll have to get new brake lines made up and fit a new handbrake cable too. Does this sound about right?

Cheers

[DamianS3]

Nott sure which kit you have? I had to have abs ribs machined off so the hub so they would fit the TVR. This was on the cosworth 273mm version of the kit.

I think south ways have just had some brake cables made up.

Cheers

Damian s3

[mk1fan]

Racetech have one handbrake cable in stock. I got one the other week. Ask for the V8S one.

I previously replaced the four flexible brake pipes for braided items. This time I am going to fit one long hose each side - like on the front. I will make my own up from using parts from ebay.

Only tricky bit is cracking the hub nuts and putting the new hubs on so its seated properly.

Bleed brakes then go have fun.

[magpies]

remember to crack / loosen the hub nuts while the car is sat on its wheels with the handbrake on. Very difficult if not.

[Lewis's Friend]

As always, the feedback is appreciated.

The handbrake cable I have as part of the kit. I think the parts are just those on a standard V8S, so I take it no modification is needed - just bolt-on.

Poor planning really, but I just replaced the flexi hoses last winter. Now I'll need more!

Is there a reason to just have a single flexi hose made to run from the chassis straight to the calipers (suitably clipped down of course)? Or is this bad practice and I should keep the hard lines on the trailing arms?

[mk1fan]

Two less connections on each side for starters. Neatness. Simplification. Cheaper.

Enough for me to use a single hose.

[Lewis's Friend]

mk1fan said:

Two less connections on each side for starters. Neatness. Simplification. Cheaper.

Enough for me to use a single hose.

That was more or less my logic, as I'm going to need new hoses anyway. I may go down this route I think...

[magpies]

Lewis's Friend said:

As always, the feedback is appreciated.

Is there a reason to just have a single flexi hose made to run from the chassis straight to the calipers (suitably clipped down of course)? Or is this bad practice and I should keep the hard lines on the trailing arms?

there is no reason not to have a flexi from the master cylinder to the rear of the chassis then a 'tee' into a flexi to each of the rear brakes. With hindsight if I were to do mine again that is what I would do.

[mk1fan]

Been putting my list of bits together for the Reserve's disc conversion. With the above in mine, I've decided to run a braided hose from the t-piece just in front of the diff to each of the callipers.