Summit started out having 10" rotors and single piston calipers. These are the same as "small DSM brakes", as found all 90-91 1Gs and 93-99 FWD DSMs. Those brakes work OK for light autox and even 150mph drag racing duty.
Since I am not planning exceed these types of racing, I do not really need to upgrade my braking capacity. But I would like to reduce the weight of my Summit and that is one potential area of weight loss opportunity.
Improving on weight these small brakes is not easy! Rotors weigh only 10.5lbs and calipers are 10.8lbs (with dust shields and hardware totals is 23.3bs). But I took on this challenge!
I already had a couple of old TCE/Wilwood brake kits with BSL calipers (only 6lbs each!!!) with matching 11.7 brackets. So all I needed was some lightweight rotors. Wilwood has some really nice 11.7 rotors (8x7” pattern), but they did not my TCE hats (8x7.625). Searching around, I found out old AEM rotor used 8X7 hats! And what is best, since those replacement rotors for AEM brakes are NLA, those can be found for little or no money!
Original AEM rotors are 12.3”x.95” thick and 15.5lbs! Substituting Wilwood rotors (11.7x.81” drilled), the weight is reduced to just 8.8lbs!
Total weight per corner: 15.1lbs That is 8.2lbs weight reduction over the “small brakes”!