SAAC Forum

SAAC HQ => Concours Talk => Topic started by: nightmist67 on September 25, 2021, 05:12:53 PM

Title: 1969 Power Brake Booster
Post by: nightmist67 on September 25, 2021, 05:12:53 PM
What is the correct power brake booster (Midland or Bendix) for an early production (December 1968) 1969 GT350?
Title: Re: 1969 Power Brake Booster
Post by: Bob Gaines on September 25, 2021, 06:30:38 PM
What is the correct power brake booster (Midland or Bendix) for an early production (December 1968) 1969 GT350?
The safe bet is the Bendix. I have seen Midland on the earliest of 69 production. Out of curiosity what is the Shelby number.
Title: Re: 1969 Power Brake Booster
Post by: nightmist67 on September 26, 2021, 11:41:17 AM
The VIN is 9F03M480183.  There is a Bendix power brake booster currently installed.
Title: Re: 1969 Power Brake Booster
Post by: J_Speegle on September 26, 2021, 02:45:54 PM
Just as a data point #218 originally had Bendix as well as some others built in that production period both Shelby and non-Shelby
Title: Re: 1969 Power Brake Booster
Post by: Doug B on September 26, 2021, 11:30:11 PM
I also have a Bendix (0170 Dec 1968 build)
DougB
Title: Re: 1969 Power Brake Booster
Post by: SCJSTU on September 29, 2021, 08:43:20 AM
Is it possible to get some pictures?
Title: Re: 1969 Power Brake Booster
Post by: J_Speegle on September 29, 2021, 12:47:33 PM
Is it possible to get some pictures?

Any particular detail or do you just want to see the general shape and features between the two suppliers?
Title: Re: 1969 Power Brake Booster
Post by: SCJSTU on September 29, 2021, 02:33:38 PM
Jeff general shape and features between the 2 would be awesome
Title: Re: 1969 Power Brake Booster
Post by: J_Speegle on September 29, 2021, 05:11:35 PM
First to all. Don't use the following pictures as a guide to finishes and other unrelated details. We are focusing on the boosters and the examples are used cars which often have some changes from how they were build originally from the factory

First the visible major differences

Left is the Bendix example on the right the Midland

(https://www.concoursmustang.com/forum/gallery/16/6-290921170609-16090191.jpeg)

- How the front and rear outer shells are attached.
Bendix used a crimping method - Orange arrow

while Midland used a metal band - Green arrows. Note that the unit has been rebuilt and sprayed a finish other than the original semi-gloss black (with the master cylinder, cap and bale) and has a longer than typical retaining bolt (blue arrow) and is missing the ID tag normally held by the bolt head to the band

- The Midland version also has a thin plastic spacer with a foam insert between the master cylinder and booster that acted as an air filter of sorts. - Red arrow

- Both front shells are shaped differently and the check valves are located in different locations.


+++++++++++++++++++++++++++++++

Since we're focusing on the Bendix here are some additional pictures and details from different angles
Note pictures were taken from generally cars with the engines removed, allowing for these angles, so the vacuum hose is shown directed away from the engine to keep it out of the way. In a fully assembled car that would bot be the case. Just thought it should be mentioned

(https://www.concoursmustang.com/forum/gallery/16/6-290921170230-16089362.jpeg)


Hope this helps



Title: Re: 1969 Power Brake Booster
Post by: SCJSTU on September 29, 2021, 06:11:44 PM
Perfect, thanks Jeff
Title: Re: 1969 Power Brake Booster
Post by: 430dragpack on September 29, 2021, 10:31:34 PM
Here is a Midland metal ID tag that Jeff speaks of, this is a 68 Mustang GT fastback booster and tag, 69 similar.   Band/tag and bolt orientation varies on how the booster was assembled.  Yellow arrow in second picture shows this particular installation.  Third picture is a 67 Mustang Midland with the tag.
Title: Re: 1969 Power Brake Booster
Post by: Special Ed on September 30, 2021, 08:08:11 AM
I see the raised letters type m/c cap show up on the later bendix and the 68 decal type cap on early 69s with the midland but not sure if that was a vendor thing or a running change.
Title: Re: 1969 Power Brake Booster
Post by: TA Coupe on September 30, 2021, 01:27:09 PM
I have one lying around exactly like the third picture with the same dual inlet/outlet  check valve. Is there much value to it?

       Roy
Title: Re: 1969 Power Brake Booster
Post by: Bob Gaines on September 30, 2021, 02:06:05 PM
I have one lying around exactly like the third picture with the same dual inlet/outlet  check valve. Is there much value to it?

       Roy
It it looks exactly like the one in the third picture of reply #10 then yes. If it still retains the short squared off assembly line rubber cap even more so.