ToniWonKanobi

What made you go this route vs the "Big Red" setup on all four corners? Also, what was the approximate cost? Seems like the "Big Red" setup is around $7K, which seems crazy to me.

golfnutintib

going to bigger brakes seems to me to be a two edged sword in all cases

if you need braking power, you may get it, but at the cost of significantly more added unsprung weight and the penalty in terms of feel and sense of 'lightness' lost as the car travels... not to mention $$$ involved

eddieb4

Tim Olsen at Olsen Motorsport recommended them and installed them so I went with his suggestion. Price was on par with Big Reds but Brembo kit was easy to order and install without modifications or bracket adaptors and such. My plan is to keep this car (and the original brakes) for a long time so I spent the dough. The setup is extremely well balanced and designed to work together front and rear. No regrets even though it was expensive.

eddieb4

Best brakes that I've had on any car ... feels fantastic along with the JRZ RS2's. Race worthy for sure although that's not my intention ... maybe 8/10ths track days a couple times a year.

tjb616

Does anyone happen to have a p/n for the 25mm RS (largest of the 3) master cylinder?

EDIT: Found it ( 993 355 903 00 ) from an old Bill V post of course!

Has anyone installed one and know if it is bolt on to a 964 C2, from a physical size standpoint? And if I want to use the 25mm MC and have an RS Boost Ratio of 3.6, what are my options for brake boosters? Anything options outside of a part 993RS or 964RS?

Bill Verburg

The 993 or 964 25.4mm m/c won't work w/ a C2 vacuum boost system, the biggest I've found(always looking though), bolt on is the 23.8mm from a regular 993, you must alkso use the 993 vacuum can and pedestal.

doruiacovescu

Hey Bill, nice to see you again? Can you tell me if front standard 993 callipers will fit under design 90 16 inch wheels? THank you!

Bill Verburg

I never tried that so, no
best guess is that it will be very close either way

GeorgeK

See post #13. I have them, they fit under D90, forged flat dish wheels, no problem. BBS RS in 16" as well.

Only issue I have encountered is with the prototype D90 (see my other thread about these wheels) where the front wheels need a 2mm spacer.

tjb616

Which begs the question... what does it take to convert a C2 to a hydraulic setup?

EDIT: Best info I could find so far: https://rennlist.com/forums/964-foru...e-upgrade.html

Spyerx

For me:
Price about same
Pad selection
Weight
Performance, modern new calipers and rotors
I also changed to 993 master and boosters and removed the proportion valve

The Brembo kit I have weighs less than the stock brakes. Even with the huge components. Aluminum hats and calipers. Lots of pad choices and insane stopping power with no fade or heat management issues on track.

You need to drive mine. Too bad I can't get it up to the track today!

Bill Verburg

here's the stock vacuum system


here's the mechanical and hyd componenets of the eltro-hyd system, you' also need a different abs brain

Spyerx

I think if you're going to go to the effort of this you'd just get a tilton setup with dual masters... go full on, no assist :-)

Foxman

I'm installing BBI wheel carriers on my 1990 C2, and converting from the small (964) to the medium (993) Brembos in the process. Is it possible to use 993TT rotors, or do I need the standard 993 rotors? Thanks in advance,

Bill Verburg

If the BBi's are a clone of the 993RS(I don't know this to be true but suspect it) then you use 993 rotors, No, 993tt rotors are too big w/o also using extension pads. Use the regular 993 304x32 w/ 993 regular rotors or use 993tt w/ Big reds. Don't forget that you also want to use 993 rear calipers. You can keep the std 964 rear rotors or use 951 M030 rear rotors like the 964RS did.

Note that you still want the 993 m/c too.