Uprating Rotors [Archive] - SaabCentral Forums

: Uprating Rotors

19th July 2002, 01:48 AM
Which company have people used to upgrade their rotors? Since I'm gonna end up putting 17's on I figured I could cram some rather large discs in there. But I can't really find much by way of rotors for Saabs and since I can't see sizes or anything on manufacturers' websites I'm stuck on what to do. Any help?

Janne Selinummi
19th July 2002, 04:28 AM

19th July 2002, 10:06 AM
Try this site it has all the disc sizes you mentioned...... http://www.brake-eng.com/

19th July 2002, 06:28 PM
Standard front disks are 286mm diameter.

In the UK the only real way of getting larger disks is to visit one of the brake specialists such as Godspeed or HighSpec and get a set of bells with larger disk fitted, then have a bracket made to space the caliper out to the correct position on the new disk.

Alternatively Trent and Abbott sell the AP racing 4 pot set up (mega money) and Abbott also sell a 300mm disk based on the 9-3 Viggen front brakes. This uses a new caliper and disk, but has the advantage that the caliper fits inside the standard Saab 16" rim.

19th July 2002, 10:12 PM
Just use 9000 disks and calipers...

19th July 2002, 10:29 PM
How much bigger than 900 rotors are they?

Janne Selinummi
20th July 2002, 08:37 AM
Not bigger, but those calipers are much more trouble free. If your standard c900 brakes are in top condition, you won't get much more effective braking, but the 9000 ones are much more effortless to use, and have much less problems to keep them up to scratch.

20th July 2002, 05:01 PM
The calipers off the later (post 88) 9000 use a pad thats 25% larger than the pad on the 900.

9000 calipers cannot be fitted to the front handbraked 900s unless you are prepared for a fair amount of work.

21st July 2002, 01:40 AM
I have noticed with the 9000 disks and calipers on my car, they are far more fade resistant than the old 900 setup. Breaking ability is not really improved as there is only so much breaking force you can apply without lock up....

An added bonus is extra pad life (apparantly)....

11th August 2002, 03:01 PM
How hard is it to switch to a 9000 caliper? I have an 85 and need to do some repair and was thinking of using 9000 calipers. Is it hard, is there a white paper on it?

11th August 2002, 04:20 PM
Sorri if this post is kind of off topic. However...

People seem to think that the 900 brakes are inadequate, Graham from Trent Saab described them as "c r a p". But I've never really had any problems with mine :-?

The only time I've noticed fade is when I've been really pushing the car at high speeds for a continuous amount of time....And that was really pushing! My car is fair amount faster than standard, and I do drive enthusiastically and so would think I'd notice if I had an issue with regards to brake fade.

Maybe the majority complaints people have, stem from poor servicing, poor components, worn parts or carrying a lot of weight?

Is this really a necessary upgrade? Wouldn't money be better spent on something that
really makes a difference? :-?