big red upgrade vs stoptechs?
07-11-2018, 07:27 PM
#16
Rennlist Member
I can't speak for the stop techs.
the brembo kits (either 964 or 993) are designed to work with the factory M/C for the generation they are designed for.
For the pre 92 cars, they recommend changing the bias valve (I removed mine) to the later bias valve. For 92 and later cars it works with the OEM bias valve
Recall, I have 993 brakes, so I changed to the larger bore 993 M/C / booster.
My setup:
Brembo 993 6 piston 355mm fronts (slotted)
Brembo 993 4 piston 320mm rears (slotted)
993 master
993 booster
no bias valve
factory abs (functional)
with 235/265 RCOMP tires the car will put your eyeballs outta your head when you stand on the brakes. it's actually easy to over-slow on track stops so damn good.
the brembo kits (either 964 or 993) are designed to work with the factory M/C for the generation they are designed for.
For the pre 92 cars, they recommend changing the bias valve (I removed mine) to the later bias valve. For 92 and later cars it works with the OEM bias valve
Recall, I have 993 brakes, so I changed to the larger bore 993 M/C / booster.
My setup:
Brembo 993 6 piston 355mm fronts (slotted)
Brembo 993 4 piston 320mm rears (slotted)
993 master
993 booster
no bias valve
factory abs (functional)
with 235/265 RCOMP tires the car will put your eyeballs outta your head when you stand on the brakes. it's actually easy to over-slow on track stops so damn good.
07-11-2018, 09:06 PM
#17
Good info there- I didn’t know that the Brembo kits are designed for the original master cylinder. I always read that the master was required to be changed but I guess that was in reference to using big reds/larger factory options.
Any my idea on the piston sizes in these kits?
pete
Any my idea on the piston sizes in these kits?
pete
07-11-2018, 11:15 PM
#18
Rennlist Member
You know, i was going to measure mine but I never did. Their specs I don't think state the piston sizes. But, I bet if you reached out to Race Technologies they'd tell you (RT is brembos US distributor).
This is 964 kit:
http://racetechnologies.com/products...0?vehicle=9509
Note on the rear kit: It is not mandatory for kit fitting, however, proportioning valve in rear brake circuit can be replaced with version from Porsche 964 cars originally equipped with 4-piston rear calipers for increase rear brake bias.
This is 993 kit:
http://racetechnologies.com/products...0?vehicle=9674
This is 964 kit:
http://racetechnologies.com/products...0?vehicle=9509
Note on the rear kit: It is not mandatory for kit fitting, however, proportioning valve in rear brake circuit can be replaced with version from Porsche 964 cars originally equipped with 4-piston rear calipers for increase rear brake bias.
This is 993 kit:
http://racetechnologies.com/products...0?vehicle=9674
07-12-2018, 10:17 AM
#21
Race Car
The only reason they aren't popular is because of the belief that brembo are better. Most of the threads have been all about big reds and brembo...
Brand recognition an tunerism aside...stoptech are very good and a totally viable alternative.
Just wish they didn't say "stoptech" on the sides...but there's my tunerism and bias showing...
Brand recognition an tunerism aside...stoptech are very good and a totally viable alternative.
Just wish they didn't say "stoptech" on the sides...but there's my tunerism and bias showing...
07-12-2018, 11:51 AM
#23
Rennlist Member
My thought process:
I did the math on a fully rebuilt/refurbished set of big reds f/r
compared to a new set of Brembo f/r with modern caliper design, modern rotor/aluminum hat design
the price was not terribly different
so I went with the brembo setup (993 front, 964 rear you can see details in my build thread)
No regrets and car has massive braking power for the wide/sticky tires I use
I did the math on a fully rebuilt/refurbished set of big reds f/r
compared to a new set of Brembo f/r with modern caliper design, modern rotor/aluminum hat design
the price was not terribly different
so I went with the brembo setup (993 front, 964 rear you can see details in my build thread)
No regrets and car has massive braking power for the wide/sticky tires I use
in in my experience - what you did with 993 front (928 GT rotors) and 4 pots in the rear is fully adequately suited for the track and hot braking. I now have the big reds with floating rotors and can’t tell a difference in performance.
if I were to mod another 964, the 993 C2 front calipers would be it. Very cheap and perfect performance.
07-12-2018, 06:44 PM
#24
Rennlist Member
07-12-2018, 08:31 PM
#25
Rennlist Member
07-12-2018, 09:15 PM
#26
What would be the lightest/best rotor setup for the 993c2 fronts and rears on a 964 using 993 wheel carriers and retaining the parking brake?it seems this would be the lightest option for brakes due to the smaller rotor size if they car be had with aluminum hats.
pete
pete
07-12-2018, 10:51 PM
#27
Rennlist Member
having not weighed: the brembo 4 piston F/R with the aluminum floating hats and smaller rotors.
07-12-2018, 10:53 PM
#28
Rennlist Member
And the Brembo GT kit retains the parking brake.
07-12-2018, 11:14 PM
#29
Pretty sure the StopTech BBK also retains the Parking Brake. IIRC, the 964 are Parking Shoes? So, it just uses the inside of the Rotor Hat as the Parking Brake.
Will report back, but, I reckon they should feel great. Will see how I feel about the StopTech Logo, maybe potentially repaint them and just get a PORSCHE Decal in the future.
StopTechs are very popular on other applications, just seems like many porsche owners, because their OE Brakes are made by BREMBO, like to stick with BREMBO.
Will report back, but, I reckon they should feel great. Will see how I feel about the StopTech Logo, maybe potentially repaint them and just get a PORSCHE Decal in the future.
StopTechs are very popular on other applications, just seems like many porsche owners, because their OE Brakes are made by BREMBO, like to stick with BREMBO.