Question 1: Which 911s used the 4 piston calipers? All I found on pelican for calipers were very similar to the 914-4 calipers (weaksauce).
Question 2: What in the suspension needs to be changed to go to 911 brakes? In other words, are the control arms different, or just the spindles? I know I'll have to go to five lug, but I do know what all is necessary to do that.
Question 3: What size rims do I have to run to stuff say 911 sc or turbo brakes under them?
Question 4: Any other changes I would have to do to the brake system besides calipers and rotors? I'm already running a 19mm master cylinder.
Feel free to answer any or all. Thanks for any help.
Mark D.
1: 964 (carrera 2 and 4) and later
2: you need 911 front struts and hubs, depending on what you have, you may need new balljoints
3: 15" (but notice there's quite a few more tricks to mount 911 turbo brakes to a narrow bodied car - read $$$$$)
counter-question 1
before you spend your hard earned money...
what are you expecting from bigger brakes?
Answer 1: 964 cars and newer, 944 turbo, 928
Answer 2: You only need to swap the struts. You can swap the whol A-arm & Crossmember - but not required (you get torsion bars 1mm bigger than stock)
Answer 3: 15" wheels for SC brakes, for 911 turbo I dunno, some will fit a 15" wheels others won't - depends on the year.
Answer 4: Nothing else is required, you could remove the proportioning valve and replace it with a "T".
In response to Jeroen's question, it's not BIGGER brakes that I really care about. Cooling is my big concern. I want vented, probably drilled rotors because this thing's gonna be driven HARD. I plan on doing lots of trackdays. Also, I would like 4 piston calipers because I don't really like the feel of the brake on 914. You have to really bury your foot into it to get not very much. I would like it to grab a little bit more. As for spending my hard earned money, well, racing is expesive. I may be nuts for wanting to race on my salary, but I see more brakes as a necessity if I'm going to get some serious power (which I plan to).
Travis, a T and an internally adjustable perportioning valve are going in as soon as possible anyway. I don't really care for the brake balance under hard braking and downshifting. I've locked the rears up a couple times going into a corner which is not a comforting situation.
One more question; I don't know the 911 models from that era too well, so what years are the 964 series. Thanks to both of you for your info. It's been very helpful.
Mark D.
Adding some sort of ducting to get cool air on the rotors does wonders to keep them working well on hard track days.
Here's a couple of many options out there
http://www.vehiclecraft.com/Brakes/vciweb0.htm
http://www.rennsportsystems.com/1-sf.html
I have early 70s 911 T struts, vented rotors with M calipers and a cooling kit. This setup works great for track events. Haven't found a need to upgrade past the M calipers. But the Big Blacks or Big Red setups are out there.
964 (also known as Carrera 2 and Carrera 4) are 1990 through 1993 or 1994
944Turbo calipers are the same
You'll need to make some very minor changes on the mountingholes on the caliper
Use Carrera 3.2 (1984-1989) rotors
For the 911 struts, these come with a spacing for the caliper mounting bolts in 3" and 3.5"
Get the later ones 1978 through 1989 - SC or Carrera 3.2
Some earlier cars also had 3.5" spacing, but I'm not quite sure which ones... So be sure to check
I don't know your car's specs, but the 4 piston calipers may be overkill on a narrow bodied car
I'm pretty sure SC or Carrera 3.2 brakes would suffice
You do not have to go to 5 bolt to get vented rotors.
You will need to go to 5 bolt to get 4 piston calipers.
I did M calipers on the front with vented SC rotors using the magical mythical Billet 4 bolt front hubs.
M calipers give you plenty of braking and the vented rotors keep the brakes from fading for 30+ minute sessions. You don't need to use the brakes much on a 4 cylinder 914 say to yourself....momentummmmmm, momentummmmmmm
These brakes work great...with stock rear brakes and removing the bias valve and replacing it with a T.
My car is used to TT/DE and Axs. For a 4 cylinder car you just don't need that much brake.
Attached image(s)
Go for a ride with Joe Richards.
Pads... you can go racing on your salary and put some money in the bank.
Powered by Invision Power Board (http://www.invisionboard.com)
© Invision Power Services (http://www.invisionpower.com)