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8/17/2017 6:33 PM  #1


Sons 1968 Mustang Brake Questions 6 cylinder

Looking at MS Brake Booster and Pedal.  Where would I get the Vacuum source on the 200 engine for booster?

He has non power drums on all 4 wheels.  I was thinking of giving my son my Granada brakes and spindles off my

69 and upgrade  to the larger brakes.   Can we use the proportioning valve he has now if we keep the drum brakes

on rear?   He might upgrade to disc on the rear down the road would have to change the proportioning valve again.

Just trying to keep the costs down for him now and make the care safe.

 

8/17/2017 8:33 PM  #2


Re: Sons 1968 Mustang Brake Questions 6 cylinder

Just start with an adjustable proportioning valve.  That way whatever you do it will still work. 

On the vacuum, you just need a source from the intake manifold.  I don't know if the 200 used a fitting with several nipples on it like the V8s, but all my vacuum comes from a common source.  I think that fitting in reproduced now.  I had a hell of a time finding mine 20+ years ago. 

 

8/19/2017 7:26 AM  #3


Re: Sons 1968 Mustang Brake Questions 6 cylinder

Thanks for the info!  When I looked closer at the Intake Manifold it looked like there was a place I might be able to use for Vacuum.  Looks like the transmission is using one of the posts too.

Steve69

     Thread Starter
 

8/20/2017 6:53 PM  #4


Re: Sons 1968 Mustang Brake Questions 6 cylinder

Yes, that's how my car is.  All vacuum is sourced from the fitting (brakes, trans, and vacuum tank for factory AC).

 

8/25/2017 9:07 PM  #5


Re: Sons 1968 Mustang Brake Questions 6 cylinder

There is no proportioning valve on a drum/drum 68. Rear drums are really small with 4 lugs. Replace rear with an 8" axle with drums. It will stop great mated to Granada front discs.
Probably easiest, as previously suggested to install an adjustable valve to fit all future scenarios. MustangSteve PV-100 is a good one to replace the existing differential pressure valve with an adjustable proportioning valve. It bolts right in place of the old valve.
The MS PB-6770 system replaces the manual pedal with correct power brake pedal and new Bendix booster. Makes the system identical to the 69 power brake setup that used Bendix booster.  (Same fitment as 68 Midland booster and pedal)


Money you enjoy wasting is NOT wasted money... unless your wife finds out.
 

8/26/2017 7:00 AM  #6


Re: Sons 1968 Mustang Brake Questions 6 cylinder

MS wrote:

There is no proportioning valve on a drum/drum 68. Rear drums are really small with 4 lugs. Replace rear with an 8" axle with drums. It will stop great mated to Granada front discs.
Probably easiest, as previously suggested to install an adjustable valve to fit all future scenarios. MustangSteve PV-100 is a good one to replace the existing differential pressure valve with an adjustable proportioning valve. It bolts right in place of the old valve.
The MS PB-6770 system replaces the manual pedal with correct power brake pedal and new Bendix booster. Makes the system identical to the 69 power brake setup that used Bendix booster. (Same fitment as 68 Midland booster and pedal)

  Thanks for the info!
 

     Thread Starter
 

Board footera


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