For the thousandth time

For the master you want a 615BDD, specifically designed for 4 wheel disc brakes.

 

You need to match your current axle length to the brake kit.  Most are short axle, but not all.  Here's a quick link  on how to tell the difference http://www.dunebuggyarchives.com/ShortVSLong

Somehow I knew Carey would be the first to respond here. 

20.6mm on the master cylinder bore. There are a few different brands to choose from. Just make it sure it says 20.6mm bore, it will note it since those are for disc brake conversions. 

Thanks guys. The kit I'm looking at has the aluminum hub. Will this move my wheels out much?  

Fpcopo - You are really the only one who can judge that. How much space do you have now? If you have like 1/4" between the tire and the fender lip then you need to order a kit that is specifically designed to have zero (0) increase in track or width.

 

Most rear disc brake kits list the increase in rear track width. I notice the CB kit (wide 5, early swing) doesn't list anything. Call CB and ask Daniel. He's pretty helpful.

 

I will say this, if you're going to do it - make sure you're doing it for more than just the 'cool factor'. If I've learned nothing in all of my upgrades, don't fix what ain't broke.  Disc brake kits on the rear swing axle can be prone to leaking at the rear seals. I've just re-built mine because they were leaking after I installed them. I folded the seal 'lips' during the install and didn't notice it until I tore it apart to see why it was leaking.

 

Best of luck,
Ted

We have been slowly (in my spare time) been designing a wide-5 disc brake kit that offers a zero offset. Hopefully they will be ready this year. Doesn't help you now, but its nice cause then you can add spacers if needed yet fit them on almost everything. 

I've got the CB Wide 5 rear discs. They are advertised as "zero-offset, but in actuality add about 1/2" per side.

I have the EMPI and they didn't add anything to the offset. That being said, they aren't a much to look at. They work. We're they worth the cost?... I can't tell if they add much to the overall stopping power.

Ymmv,
Ted

The AC Industries kit (SoCal Parts) is also a zero offset kit.

I have the AC industries kit on the front of my car. I'm very happy with that kit and its components. In hindsight, the only thing I would change is that I sort of wish I had gone with a lighter setup on all 4 corners. Both the AC industries kit and the EMPI kit are very heavy. I haven't weighed the individual components vs the drum setups, but I do know there are lighter replacements out there.

Will standard drivers like me notice a difference with lighter setups? Most likely not, but it might be nice.

Just my dos rupees.

Ted

Ted, that's one of the reasons I went with Airkewld, the weight. Instead of big lumps of cast iron, I've got big lumps of machined aluminum and aluminum Wilwood calipers on the front. EVERYONE uses the same Varga rear caliper with e-brake(if you want e-brake). It looks like the same one used on the Golf/Jetta/Corrado back in the day, the e-brake turns the piston in to take up the wear/adjustment of the cable/pads.

 

Installation to be underway shortly, all 4 corners. They are Wide5. Offset is the same front and rear as my old CSP disc front and stock drum rear. The bad thing is I've had them on the shelf for almost a year!

Ted- You won't notice the extra weight until you're driving at the outer limits of what the car is capable of- but even then you'd have to be a very experienced performance driver AND had expereince behind the wheel of a car set up with lighter brake components, and those lighter than all $hit wheels will make up for the difference (or come very close). Just knowing having the lighter brake parts (and those beautiful wheels- if I didn't have alloys, I'd be wet dreaming about those!) will allow you to push the envelope that tiny little bit more would be very satisfying, though. And they would look good under your car... Selling the heavy stuff would help offset the cost... When it comes to handling and braking performance, weight (actually, lack of it) is everything, you know (and yeah, I'm trying to be difficult!)

 

914 based rear disc kits use a type 3 rear hub, and all the aftermarket sets I've seen (or read about) have a similar hub, and I think this is why they all add that 1/2 or 5/8" to the track of a type 1 assembly. Can it be designed to type 1 offset/positioning- I don't know.