A couple questions about a 993 Brake conversion

[SoCalGL]

i've been going through pages and pages but nothing on how to set up the 993 rear brake set up...

[Mikey]

I'm going a 993 front and rear set up also and I'm also going to have Lanner machine the fronts too.

For the rear I'm going with 944 n/a hubs, the mounting plates for the calipers, and the ebrake hardware. If you put the 944 rear hub, 993 caliper and the 993 disk it will all work together. You will need some small spacers made (about 3mm) to center the caliper on the disk.

[SoCalGL]

okay awesome,

see i have info on doing a 944 upgrade but not the 993, so pretty much same as a 944 but you use 3 mm spacers correct?

[Mikey]

Straight from VdubEngineering's site...

Incidentally, you can also use 993 rear brakes on the same early (85.5 and earlier) backing plate/caliper mount. The caliper will require a shim of about 3mm to centre it over the rotor.

Yes. If you use the 993 Rear calipers and rotors. You'll need the 3mm spacer.

[Pillow]

Just out of curiosity, could you run the 944 N/A rotor and straight bolt up the 993 caliper to it?

... Might be a stupid question, but might avoid needing the spacer?

[Mikey]

Originally Posted by Pillow

Just out of curiosity, could you run the 944 N/A rotor and straight bolt up the 993 caliper to it?

... Might be a stupid question, but might avoid needing the spacer?

The 993 rear calipers are 290mm x 24mm.

As quoted from Vdubengineering's site, "Early NA (83-85). ...with a ventilated disk (290mmx20.4mm)."
"Early turbo's ( 85.5? and 86) ...the rotor is ventilated and measures 299mmx24mm."

Here are some numbers for you. The early 944 n/a's are too narrow. and the turbo's are too tall. I found the measurement for the 993's in another post.

There are never stupid questions. I'm glad to help where I can, it's a good question. Took me about 5-10 minutes and a little site searching to find the numbers. I didn't know till you asked.

SoCalGL, I didn't even catch the first time you asked about a master cylinder. Personaly, I was going to try a stock master cylinder, then go from there.

[SoCalGL]

see my plan is to run 993's on all four corners, my first idea was to run 993 turbo's but I felt I would be over doing it immensely also this is somewhat of a budget project with an average of 3 to 500 hundred every two weeks and I still have alot to do and 800 dollar calipers just seem ridiculous. Anyways when finding Sandeep's tech article on 993 turbo conversion I e-mailed him asking about his brake set up and he told me he runs a dual m/c set up with a bias bar made by tilton brakes so I was wondering if such an exstensive system would still be nessacary.