Master Cylinder Upgrade

[bajacalal]

I need to replace my master cylinder.

I am running disc brakes (and the entire rear axle) off a 1991 Jetta GLI in my 1985 Golf. I intend to stick with the stock 4 way setup and "shotgun shell" proportioning valves.

I know there is some difference between the brake setup between these years, but I'm not sure what it is.

Should I use a master cylinder for the 1991+ cars (without ABS)? They are about the same price as the earlier MK2 cylinders, and I can't figure out what the difference is.

Thanks.

[vwroadkill]

they are the same.. I will look again tonight... but I believe they are the same master cylinders. as they are MK2's.

[bajacalal]

There is a different part number for 91+ which is the same for the mk3 (without ABS).

[vwroadkill]

crap forgot.. same as the corrado.. but I believe they will work.

ok I went and checked.. from what I saw at the shop... the mastercylinders should be interchangeable.. as long as they where both disc.  the bore of the mastercylinder has the same dimensions
that being I checked a G-60 corrado and a GTI. both being 90 models...
hope this helps..
Dan

[R.O.R-2.0]

I need to replace my master cylinder.

I am running disc brakes (and the entire rear axle) off a 1991 Jetta GLI in my 1985 Golf. I intend to stick with the stock 4 way setup and "shotgun shell" proportioning valves.

I know there is some difference between the brake setup between these years, but I'm not sure what it is.

Should I use a master cylinder for the 1991+ cars (without ABS)? They are about the same price as the earlier MK2 cylinders, and I can't figure out what the difference is.

Thanks.

mk3 uses a 22mm master, and its a bolt on upgrade..

you cant use an ABS m/c even if you were DETERMINED to make it work.. they are just far too different..

[8v-of-fury]

Yup put a 98 TDI master on my 90 German when it died.. Didnt know if it would work at the time but it did.

[bbob203]

what size mc is a mk2?

[R.O.R-2.0]

what size mc is a mk2?

idk, 19-21mm i believe, depending on brake combo..