It's been a while since I updated the never-ending saga of my SLC. After running the car enough to really begin to understand what works and what doesn't I have concluded that the brakes are just not what I would say are really really good. I have reached the conclusion that the car stops ok but not really outstanding. I even think that my GT40 feels more balanced in the end. So why? What is the difference?
GT40: front calipers 4X 1.75 pistons rear 4X 1.38 pistons with a 5/8 tandem master and a proportioning valve in the rear circuit. I have it turned down to reduce rear pressures by about 10-15%. All 12.06 X 1.25 rotors
SLC : front calipers1.62, 1.12, 1.12 6 pistons Rear 4X 1.25. Front rotors 13.03X 1.25 Rear 12.88X1.25 Ballance bar set to bias the fronts a lot. Front master .7 rear master .625
The big difference is the front calipers. I have come to believe that there just isn't enough piston area. So I changed them to these. I should note that I have tried several different master sizes .75, .7, .625 in both positions front and rear I just never seem to be confident in the front of the car stopping aggressively without requiring excessive leg pressure and very little modulation range, They will lock up the fronts but with a very narrow margin of leg pressure. I hope that helps define the problem but you just have to feel it I guess.
Part No: 120-13263, calipers, dynapro, dynapro 6, big brake, dynalite, dynalite pro, forged dynalite, d52, superlite, sl6, sl4, tc6r, promatrix, w6ar, rotors
www.wilwood.com
Comparisons of the two cars and old to new SLC calipers
Gt40 piston areas F 4.8 R 3.0 (reduced to about 2.5-2.6 or so)
SLC before F 4.4 R 2.46
after (new) F 5.18 R 2.46
And on to the engine project. I'm building a new motor. 400 CI SBC based on a DART SHP block with a 4.125 bore and 3.75 stroke, custom cam and AFR race ported heads. The target HP is 540 or so. That is about 100 more than the 350 I had in the car before. Why 540hp? Because that is the number that I believe the G50 I have in the car will be OK with. IMHO that s the HP number that a lot of stuff like Cv joints, axles, GRBX's, and clutches etc. start to get out of hand budget-wise.
So we'll see.
AND!!!!!! a new set of tires. This will be my first NEW set of slicks...............................