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69mach1build

Which brake booster is right for me?

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2 hours ago, det0326 said:

while on this subject does anyone know the pedal ratio for the 1969 power pedal. I know from the pivot point to the m/c push rod is 5.0 inches but I don't know the distance from pivot point to center of pedal pad.

Looking at this website, it looks like the distance is the same for manual and power brakes. 13in is a bit low.

https://www.mustangsteve.com/msfaqbrakepedals.html

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42 minutes ago, 69mach1build said:

Do I need to change out my power brake pedal for something different if I do not use a brake booster?

yes, there is a difference in the distance from pivot point to booster/mc rod.  The distance is 5 inches on a power pedal and 2 inches on a manual pedal.

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16 minutes ago, det0326 said:

yes, there is a difference in the distance from pivot point to booster/mc rod.  The distance is 5 inches on a power pedal and 2 inches on a manual pedal.

This is resolved by adding an adjustable pushrod correct?

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No, the 2 pedals are different.  The difference is distance from where the pedal pivots and where the m/c rod connects. Two complete different pedals. Look at unilec's post above to mustang steve's site. He has a picture of 67 power pedal which is similar and also a manual you will see the difference. The 69 power pedal connects in a different hole up further on the pedal support. If you are changing to manual there should be a hole about 2 inches up from the mc/booster rod that the manual pedal mounts in. Same hole with a clutch petal if you were using one.

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This is a automatic transmission manual brake pedal from my 1970.  I went to power brakes, and this pedal would not work.  On this pedal, you can see how close the brake rod is to the top pivot point.  In this case, the pivot point is the typical clutch pedal/brake pedal shaft that runs through the middle of the clutch/brake pedal support bracket.

On a automatic transmission power brake pedal, this distance is larger, as the pivot for the power brake pedal is not the clutch/brake pedal support bracket shaft, but is at the top of the bracket, and uses a bolt to hold it in place, rather than the shaft.

Hope this helps.  If go to my build thread, I believe I posted detailed pictures and dimensions on the brake pedals.  

 

IMG_3709.jpg

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On ‎4‎/‎18‎/‎2018 at 4:20 PM, Vicfreg said:

This is a automatic transmission manual brake pedal from my 1970.  I went to power brakes, and this pedal would not work.  On this pedal, you can see how close the brake rod is to the top pivot point.  In this case, the pivot point is the typical clutch pedal/brake pedal shaft that runs through the middle of the clutch/brake pedal support bracket.

On a automatic transmission power brake pedal, this distance is larger, as the pivot for the power brake pedal is not the clutch/brake pedal support bracket shaft, but is at the top of the bracket, and uses a bolt to hold it in place, rather than the shaft.

Hope this helps.  If go to my build thread, I believe I posted detailed pictures and dimensions on the brake pedals.  

 

IMG_3709.jpg

What pedal would I need for manual brakes on my 69 with manual trans?

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