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General Information => Upgrades (non engine related ) => Topic started by: bajacalal on October 01, 2012, 02:53:05 pm

Title: Master Cylinder Upgrade
Post by: bajacalal on October 01, 2012, 02:53:05 pm
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.
Title: Re: Master Cylinder Upgrade
Post by: vwroadkill on October 01, 2012, 02:59:40 pm
they are the same.. I will look again tonight... but I believe they are the same master cylinders. as they are MK2's.
Title: Re: Master Cylinder Upgrade
Post by: bajacalal on October 01, 2012, 03:06:59 pm
There is a different part number for 91+ which is the same for the mk3 (without ABS).
Title: Re: Master Cylinder Upgrade
Post by: vwroadkill on October 01, 2012, 03:10:06 pm
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
Title: Re: Master Cylinder Upgrade
Post by: R.O.R-2.0 on October 02, 2012, 11:35:46 am
Quote from: bajacalal on October 01, 2012, 02:53:05 pm
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..
Title: Re: Master Cylinder Upgrade
Post by: 8v-of-fury on October 02, 2012, 04:15:39 pm
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.
Title: Re: Master Cylinder Upgrade
Post by: bbob203 on October 02, 2012, 05:07:00 pm
what size mc is a mk2?
Title: Re: Master Cylinder Upgrade
Post by: R.O.R-2.0 on October 02, 2012, 07:37:30 pm
Quote from: bbob203 on October 02, 2012, 05:07:00 pm
what size mc is a mk2?

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