Madturk

FYI, I have big reds for a fair price if you need it.
Also have the replica aluminum big red adapters for half the price of rennline if anyone is interested.

hepkat63

ok, I'm confused So, if all i wanted to do is replace my rear 2 pot calipers with 4 pot calipers - will stock 993 ones fit?

ilko

Yes, they will. That's how my current 964 was set up when I picked it up. And even though the 993 rear calipers have larger pistons I didn't feel disproportionate rear bias and every time I would break hard the fronts would lock up first. That said, I went with the standard 993 calipers in the front to match the rear and the car feels more solid under braking now.

Bill Verburg

Using 993 rears w/ stock 964 fronts is actually a not too bad way to go especially for those that track the car and want the rear brakes to participate more.

the torque bias goes to 1.420, compared to earlier 911 1.491 and 993RS 1.426

stock 964 4/2 is 1.508 and 4/4 is 1.734

This is all before any p/v kicks in, the p/v move bias way to the front

the worst thing about it is the pedal ratio gets awfully high, giving longer travel and less firm pedal.

NineMeister

You can't use a stock 993C2 or 993C4 caliper with a 322mm disc because the internal clearance radii of the caliper is too small, hence stock 993 calipers have to run the 304mm disc.
The 964RS / 965 3.3 Turbo caliper have a larger clearance radii to suit the larger disc.

Achtung964

Madturk - PMed you.