4 replies to this topic

[Nickj270386]

Hi guys I have a 1983 Mayfair you can no longer get the relevant brake master cylinder for this age vehicle so you have to fit the gmc227 (yellow tag) this is not a problem but anybody no what I have to do with the wiring for the master top,apparently you have to modify the wiring
Has anybody done this and have some more info
Thanks in advance

[Spider]

Is this the Master Cylinder it was fitted with ?

https://www.minispar...quare-reservoir

 

[mbolt998]

I did it by modifying the wires going into the back of the switch as follows:

 

https://www.theminif...need/?p=3765405

 

Other solutions are possible. Also make sure that the bottom section of the new MC goes to the rear brakes and the top to the fronts. It won't affect ultimate braking performance but will give you a much more natural feeling pedal (mine was wrong for years after an ignorant garage blah blah long story).

[coopertaz]

I did it by modifying the wires going into the back of the switch as follows:

 

https://www.theminif...need/?p=3765405

 

Other solutions are possible. Also make sure that the bottom section of the new MC goes to the rear brakes and the top to the fronts. It won't affect ultimate braking performance but will give you a much more natural feeling pedal (mine was wrong for years after an ignorant garage blah blah long story).

ignorant main dealer changed mine years ago and locks up the rears.

[Nickj270386]

Is this the Master Cylinder it was fitted with ?

https://www.minispar...quare-reservoir

No not that one