OK, so my mk1 Scirocco has the following: Autocavan brake bar Mk2 Golf 16v servo and 22mm m/c 239mm front discs Mk2/3 Golf rear discs and calipers I suspect that the in-line proportioning valves are from a drum-braked car because it does a 180/360 when you slam on the brakes. Bit scary as you can imagine with an ABF/ITB set-up. In the shed, waiting to go on, is a Tech-53 Wilwood kit - 4 piston calipers onto 280mm discs. I'll also be fitting a 23mm Seat m/c. I will be fitting the 6N2/Ibiza rear stub axle/bearing/disc set-up and will have a choice of Polo GTI (34mm), Mk4 Golf (38mm) or the current (36mm??) Mk2/3 Golf calipers. My initial thoughts are to remove the in-line prop valves and fit the smaller Polo calipers. Does this sound sensible? Appreciate any input
I think you should keep the valves, hold off on the M/C and fit the smaller Polo calipers. You can punch the numbers on this to see how the bias would work out without. http://www.tceperformanceproducts.com/bias-calculator/ I have some conversion figures pre done that I use myself. M/C 20.64mm 0.8125968 22.2mm 0.874014 23.8mm 0.937006 Front Calipers 36mm 1.41732 40mm 1.57480 48mm 1.88976 54mm 2.12598 35mm 1.37795 Front Discs 312mm 12.2835 310mm 12.2047 305mm 12.0079 290mm 11.4173319 280mm 11.0236 256mm 10.07872 239mm 9.40943 Rear Discs 226mm 8.89762 232mm 9.13384 Rear Calipers 34mm 1.33858 36mm 1.41732 38mm 1.49606 I think your Tech- 53 fronts are 41.28mm 1.625"
