ABS delete on a 172 with 172 cup bits + is the master cylinder different?

[midge]

When removing the abs on a non cup what do you need?

 

[bashracing]

master cylinder has 4 ports on the 172 cup, non cups have 2 port as they distribute through the abs modulator valves,
172 cups have a rear axle compensator valve to reduce fluid pressure to the back brakes, non cups don't, they reduce pressure through the abs modulator.
some 172 (03 ish on) had the jc5 130 gearbox fitted that read its speedo signal from the abs sensor so more trouble than its worth if starting with these.
In short you'll need the:
cup master cylinder
cup brake pipes (or make your own)
rear compensator valve.

 

[JB21]

As above its a PITA really, do you just want rid of tbe ABS for track purposes? If so then just pull a rear sensor and get some good pads up top and decent track tyres and let the fun commence with 50/50 bias.