I am a newbee to 930's. A mechanic told me, "Be careful, those are only SC brakes." Another mechanic told be that if I wanted to do a DE they would get me the appropriate pads.

The brakes seem fine to me, but I have been just driving on the street. My old 911's always seem to have good, and highly touted, brakes. I can't imagine that Porsche would make a 930 and put inadequate brakes on it.

Are the brakes weak? Do people typically upgrade them? Haven't I read something about 917 brakes or that they changed sometime after 77?

Can someone educate me or refer me to a good source?

 

The 75-77 930 has relatively small but reasonably effective (for road use) aluminium brakes. They are identical to those found on the S and RS models of earlier years and similar to the cast iron items found the later SC model.
The 917-derived 930 brakes were used on the 930 from 78 and onwards.

 

There are many things you can do to make the brakes more effective for track use if that is your intention. I would say that the 75-77 Carrera turbo's are probably one of the few Porsche's ever made that do not have adequate sized brakes for track use.
Phil

 

If you are running in a lower run group you should be fine. Flush brakes before you go with a quality fluid and installing set of new pads will help with heat. If it's a multiple day event bleed them between day. Don't forget to have a good look at your brake lines. If it becomes a regular thing you can install brake ducts.

BTW A lot of the guys racing SCs and Carreras with the iron ATE calipers rebuild them after every event.

 

I would say; keep your 3.0 930 in original configuration.
You can update your brakes with Zimmerman cross drilled rotors, braided lines and top dollar pads.
Keep in mind that your 3.0 is considerably lighter than the later 3.3 car.
Rebuilding the ATE aluminium calipers is a quick and easy job BTW.

 

If this is going to be your first time on track, the brakes will be fine. Have your shop check the condition of the calipers, rotors, pads, and the brake lines. Check the wheel bearings, and tie rods. Also check condition of the tires to make sure they aren't old and showing signs of dry rotting. Flush with fresh brake fluid and put fresh pads in unless the ones in there are new.

If you are new to the track, then you can rent or borrow a helmet. Wear thin soled shoes so you have good pedal feel, and go have fun.

 

Actually the best track advice is don't use the brakes all they do is slow you down. The stock brakes are adequate - if you had a well developed car on really good tires, I think you could run one these out brakes pretty easily. These are same brakes as a S or a RS and this is a much heavier car.
Phil

 

Great info, guys. Thanks!

 

I finished a couple of races in a Formula Ford without any brakes. It's distracting but doable. . and my Shelby in my avatar had rear drums...under severe braking it wagged its tail like a happy Labrador.

BTW I have a full set of 76 930 calipers, disks, and hubs if anyone is looking for some.