Thank your for the suggestion Mike. I'm going to get the parts for this easy upgrade. A little more brake cooling never hurts.

 

Cool; if you search you will find info on how to attach the scoop to a 944 arm that doesn't have the 968 lug. I bought new 968 arms.

Cheers,
Mike

 

Guys,

What's the appropriate rotor to use for the "medium" black front calipers from the 89 951 and M030 16v cars? This is for a late offset non-m030 car. The adapters used will be the ones that allow a non-M030 car to use the medium or big red calipers.

Will the 89 951 rotors work?

Thanks

 

Yes it will

 

Hi, I will use this old thread to keep the discussions about brake upgrades in one place. I use my 87 951 couple of times each year on two local tracks where the average speeds are around 85mph and there are several corners where you have to brake from 100 mph to around 40 mph as well from 115 to 60. I have the standard 951 ''small black'' brakes and use Motul 660 brake fluid and brake pads designed for light track days (as I also use the car on the street). Generally I do not have brake fade, but after repeated sessions I feel that the brake pedal becomes somewhat softer and this or next year I might participate in “endurance race” for youngtimers, where the race would go for 45 or 60 minutes, and the stress on the brakes might increase.

So what would be the benefits from going from small blacks to medium blacks in the front? I see that both calipers use the same brake pads. Does the benefit come from bigger mass and volume from the calipers, thus allowing better heat dissipation? Is the rotor diameter size the same? I also consider the 968 brake ducts as an upgrade.

 

Medium blacks don't run the same pad. The pads have more area, and the disc is also slightly larger and thicker.

Here's a picture I made showing the pad size difference between the small blacks (green) to the 944 m030/928 S4 medium blacks (red) and the 993 turbo/928 GTS big blacks (yellow).

 

Excellent diagram crazy!

 

Are those aftermarket hubs?

What are the adapters made of? Threads in the aluminum adapters can pull out.