hi all, i have an escort mk5 master cylinder and want to use 2 outlets for front, 1 outlet for rear, and 1 outlet for pressure switch, it has 2 x 10mm and 2 x 12mm outlets, now the question - which should i be using for the front brakes???

regards
chris

[Edited on 21/9/08 by chris_smith]

i have an old mk5 over in one of the sheds some where, if u can wait til 2moro i can tell u what goes where as standard if thats what u want to know?

thanks mike, i was really just wondering if it matters which should go to the front/rear with them being different size fittings

chris

Your master cylinder is dual circuit, meaning it has two seperate sytems (pistons) in it. You can split the sytems 2 ways, front and back or diagonally. Most kit cars are split front and back as it means you only need to run 1 brake line to the rear.

If you want to split front to back both front brakes must come off the same piston on the master cylinder so you'll either have to use different sized unions or blank off one port and use a T-piece somewhere.

The M12 ports probably had pressure reducers fitted as the system would have been split diagonally as standard and the lines to the rear brakes would have had the pressure reducers fitted.

Have you checked how the connection is sealed on th M12?

Picture of master cylinder with pressure reducers fitted.




Hope that all makes sense, long story short is that the front brakes get connected to either of the ports closest to the front of the car, and the rear brakes to either of the ports closest to the rear of the car.

Davie

thanks davep, i dont have those pressure reducers you mention, and each 10mm/12mm outputs have one on the side and one on bottom 10mm being at the plunger side as per your pic, so are you suggesting i use the 12mm outputs for front and one 10mm to the rear using the other 10mm for brake switch

chris

Hi Chris,

Can you post a picture or download mine and mark which ports are where just to make sure we get this right?

Is the picture I posted the same master cylinder as yours?
If it is then there is 1x 10mm and 1x 12mm port on each circuit as each piston fed 1x front wheel and 1x rear wheel.

Here's a simple picture of what's inside your master cyinder. Where the brake lines are shown you have two to each piston.

hi daviep the pic below shows 10mm outlet marked with red and 12mm with green it also has an outlet for each directly below

cheers
chris


Description

Hi Chris

Green outlet(s) to the front and red to the back then.

Do you intend to brace the master cylinder mounting as it will fail SVA if the bulkhead flexes at all when the brakes are pressed.

I like your pedals

Cheers
Davie

That pedalbox was just a mock up to get everything in the right place i have made a proper section for the cylinder so should be no flexing will post pics when finalised
thanks for all the help

chris