Brake Booster Problems

sj9ers · Apr 13, 2009

Brake Pedal too high

My 1969 Mustang's power brake booster was bad and I needed a new one so decided to perform this swap with a fox body brake booster Fox Mustang Power Brake Booster Install . The article was for 67 and 68 mustangs but I figured it would work on mine. I got everything mounted and installed but now the brake pedal is way too high off the floor. I'm thinking the brake pedal push rod is too long. Would this solve the problem http://www.parts123.com/parts123/yb.dll?parta~dyndetail~Z5Z5Z50000016e~Z5Z5Z5ADOFI~P45.95~~~~~~~F ?
Thanks
Pics
With clutch pedal in
<a href="http://s113.photobucket.com/albums/n203/sj9ers/?action=view&current=138.jpg" target="_blank"><img src="http://i113.photobucket.com/albums/n203/sj9ers/138.jpg" border="0" alt="Pedal hitting clutch shaft"></a>
With clutch pedal out
<a href="http://s113.photobucket.com/albums/n203/sj9ers/?action=view&current=142.jpg" target="_blank"><img src="http://i113.photobucket.com/albums/n203/sj9ers/142.jpg" border="0" alt="Photobucket"></a>
There's about 8.5 inches from the floor to the pedal without the clutch pedal in.
<a href="http://s113.photobucket.com/albums/n203/sj9ers/?action=view&current=143.jpg" target="_blank"><img src="http://i113.photobucket.com/albums/n203/sj9ers/143.jpg" border="0" alt="Pedal Distance from floor"></a>

Rusty67 · Apr 14, 2009

How high is too high ? Have you taken it out for a drive yet ? Check to make sure you have full space to drop the pedal down lower. Make sure you get full brakes before you try and lower the pedal. You might get away with just switching to an adjustable push rod.

sj9ers · Apr 14, 2009

Well the car is all apart right now with no engine. But the pedal is sticking out way past the other pedals and the top of the brake pedal is hitting the shaft that pivots the clutch. Is it sticking out because there's no vacuum right now?

sj9ers · Apr 14, 2009

Added pics

Mil1ion · Apr 14, 2009

As I stated in your thread on the other site.

You need the EXACT booster application.
Trying to modify something from a FoX body won't work .
Just bite the bullet and order one from Rockauto or have your original rebuilt.

Rusty67 · Apr 14, 2009

Mil1ion said:
As I stated in your thread on the other site.

You need the EXACT booster application.
Trying to modify something from a FoX body won't work .
Just bite the bullet and order one from Rockauto or have your original rebuilt.

You are SO wrong its not even funny. Plenty of people use Fox Mustang boosters in classic Mustangs ALL the time.

Mil1ion · Apr 14, 2009

Not on 69's & 70's they don't.

there are so many different boosters you can't assume they are the same.

1969 Mustang (except Boss 429) requires a special booster.
69 Bendix Booster is stamped 6586.

Ford number C9ZZ-2005-A

sj9ers · Apr 14, 2009

Ok I understand what your trying to say about requiring a special booster, but the problem here seems to be that the brake pedal push rod is too long. Wouldn't simply replacing the pedal push rod with an adjustable one to shorten it solve the problem?

Rusty67 · Apr 14, 2009

I was going to sugest trying to use an adjustable pushrod, I just want to make sure you have enough pedal travel before you shorten the rod. You could actually hack yours up to make an adjustable pushrod yourself with a nut sleve, some jam nuts and a good die.

Mil1ion · Apr 14, 2009

To change it You need the special equipment to crack open the reservoir..get the correct push rod and require the special equipment to put it back together.

Just get the other one rebuilt and have some piece of mind .

Rusty67 · Apr 14, 2009

Mil1ion said:
To change it You need the special equipment to crack open the reservoir..get the correct push rod and require the special equipment to put it back together.

Just get the other one rebuilt and have some piece of mind .

Are you serious ? You are making a fool of yourself. Stop posting nonsense and just read the thread. You will learn so much more.

You don't have to open the unit at all to turn it into and adjustable pushrod. Cut the pushrod and use a die on it to thread it.

Why are you so anti-do-it-yourself ?

Mil1ion · Apr 14, 2009

Rusty67 said:
Are you serious ? You are making a fool of yourself. Stop posting nonsense and just read the thread. You will learn so much more.

You don't have to open the unit at all to turn it into and adjustable pushrod. Cut the pushrod and use a die on it to thread it.

Why are you so anti-do-it-yourself ?

\

why is the internet so full of offensive guys like you that start pissing contests?

Mil1ion · Apr 14, 2009

not all boosters have the same internal specs.

that's why i suggest original equipment

Rusty67 · Apr 14, 2009

I'm not being offensive, I'm being defensive. You are the one being offensive. You should never tell someone something can't be done. The word can't is what stifles creativity.

Just because something doesn't bolt directly in and work instantly doesn't mean it wont work. If people only stuck to what they know worked, we would never make any improvements in our technology.

sj9ers · Apr 15, 2009

I looked at the brake pedal push rod tonight and I don't know if I'll be able to thread it while it's in there but I'll try. If I do have to remove it how do I take it out?
Thanks

Mil1ion · Apr 15, 2009

Rusty67 said:
I'm not being offensive, I'm being defensive. You are the one being offensive. You should never tell someone something can't be done. The word can't is what stifles creativity.

Just because something doesn't bolt directly in and work instantly doesn't mean it wont work. If people only stuck to what they know worked, we would never make any improvements in our technology.

No you weren't.. the moment you said something AGAINST ME ....you were offensive.

I suggest you learn the difference.

IMO, You don't screw with braking systems.

Rusty67 · Apr 15, 2009

Fox Mustang Power Brake Booster Install

Mil1ion · Apr 18, 2009

Good article.

I still prefer original equipment.

$100.0o CDN to rebuild the original booster and it's ready in 1 day.

No modifications to endure and simple R & R

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