Both of my cars.... both 91 NA's.... one is single pot, one is 4-pot.... both have the EXACT same hardware other than the calipers and rear disks/hubs. The hard lines are the same, come out in the same areas and have the same threads, the rubber lines appear to be the exact same as well, the master cyl is the same, the booster is the same, proportioning valve is the same.

That's not the hardling I'm reffering to. It goes from the 4 pot caliper to the strut, the body hardlines are the same. There's the body hardline to the flex line to the strut hardline to the caliper.

Oh! Yeah.. I was considering that as part of the caliper... On the single pot car its rubber.. on the 4-pot its metal. My bad!

Nice post-

So how much do you estimate all of this costs as far as parts? IE would it be cheaper to buy a turbo II car for the 4 piston calipers with the bigger master cylinder, brake booster, and hard lines from the start if you don't have an FC already but really want these features?

Um, no.

You can buy a set of brand new rebuilt four-parts for like $60 a piece. The vented rears you should get used since they're $$$$, and frankly, a rear brake failure is not that big of a safety issue.

You can use the single-pot lines (get braided steel-covered teflon ones), apparently.

You don't need a new master or booster (the big booster is for the turbo, because of the positive engine pressure).

cool thanks- you are referring to the vented rear rotors that I should buy used?

The rear calipers are available at the same place you refer to?

Thanks!
Andrew

No, the calipers. Get new rotors, obviously.

I'm slightly confused. The writeup mentions getting the rear hubs/spindles, but why is this needed if he is only doing the front brakes? If I recall correctly, the rear brakes on my 87 TII are identical to the ones that were on my '88 SE.

I just recently pulled a few sets of 4 pots from a couple of junkyards (hey, having spares is never a bad thing) and the rear brakes on the GXL models they came from also looked identical to the rear brakes in my TII.

Did the s5 cars have some other setup?

They're the same.

Obviously you don't need the hub/spindle if you're doing front brakes, and I don't get why you'd need it either way... if you have a 5-lug car.