Hi,

New to the site but did an extensive search and came up with nothing. I have a little different scenario that i am trying to find some information on. I checked with the ford dealership and their computer only shows a diagram of the master cylinder and one of their techs couldn't answer the questions either. So here goes.

I have an old 46 chevy truck project that we are doing custom with a ford 302/c4/8" ford rearend. I have tried one brake setup using the booster from a 91 Tbird and the original m/c from the 69 Montego donor car...no good. So since I have disc brakes in front from the front IFS upgrade and the rear drums from the ford 8" rear I decided that a mid 80's mustang setup should work nicely. I purchased the m/c and booster and portioning valve from a guy that just pulled it off a dead mustang he just pulled off the road in January. The problem is that this m/c is a 3 fitting one and not a 2 fitting one. The portioning valve is only a 2 fitting portioning valve in and out. I have looked through some service manuals and they only give the diagram of the m/c and show the portioning valve below it. and connecting to the two side fittings on the m/c. No mention is made to where the bottom brake line goes from the m/c and also where the lines from the portioning valve go.

So PLEASE....if anyone can tell me where these lines go and how they correctly hook up to the front disc and rear drum brakes I will be extremely grateful.

Thanks,

Charlie

 

bump...any knowledge is really appreciated.

thanks,

 

Newer cars had two ports for the front brakes (one for each caliper) and one for the rear (drums). Did you get the proportioning valve that matched that cylinder? If that setup is incorrect then the top port is probably used for a brake switch to indicate low brake fluid on the dash of the newer car. Or it could be for a hydraulic clutch assembly. Don't know off the top of my head what, if any mustangs, had hydraulic clutch assemblies. Plug it off with a brass fitting and you should be fine.

Those are my guesses.

 

Welcome back Derf!! Where ya been??

 

Been pretty busy, it's wet weather and humidity on the way which is always a plus for the plastics testing equipment industry I've been lurking for the last couple of weeks waiting for some free time to post.

I see most are still here.

Thanks btw. I was waitin for a one liner from Charlie, HC, or in Reds case a one-worder.

 

HUH?

 

Thank you Red!