weak brake boost?? anyone else?
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Senior User
Joined: Apr 2007
Posts: 300
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weak brake boost?? anyone else?
The guy I bought my 78 from said that all the brakes had been done. OK, so they have, however the booster sure as hell doesn't seem to work well.
It DOES boost, that's for sure, but I feel Like I really have to get on it if I want to stop suddenly.
Being this is the first 70's ford truck that I've owned, I'll ask how your brakes are.
How is your boost? does it stop on a dime with relative ease?? perhaps my booster is going south, though I don't hear any leaks.
Maybe boost is weak on these trucks, if so, what Larger boosters from other vehicles have you had luck swapping in to ease up on the braking effort?
It DOES boost, that's for sure, but I feel Like I really have to get on it if I want to stop suddenly.
Being this is the first 70's ford truck that I've owned, I'll ask how your brakes are.
How is your boost? does it stop on a dime with relative ease?? perhaps my booster is going south, though I don't hear any leaks.
Maybe boost is weak on these trucks, if so, what Larger boosters from other vehicles have you had luck swapping in to ease up on the braking effort?
Elder User
Joined: May 2006
Posts: 636
Likes: 1
same here pedal is soft and goes pffft when you depress it but i have never checked the vacuum. how do you install a valve? just run it inline? that kkeps the vacuum from flowing backwards like a water check valve correct??
New User
Joined: Jan 2008
Posts: 0
Likes: 24
Inserted into the booster grommet there is white plastic check valve that sometimes goes south.
*Note: Ford brakes are known for being weak.
Most people who first drive an old ford trucks notice how bad the brakes are.
I'll post a booster test shortly.
*Note: Ford brakes are known for being weak.
Most people who first drive an old ford trucks notice how bad the brakes are.
I'll post a booster test shortly.
Last edited by Mil1ion; May 3, 2007 at 03:31 PM.
More Turbo
Joined: Jun 2006
Posts: 601
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I had the same problem with mine. Someone else posted on here, check to see if the booster is working, step on the pedal with the motor off, start the engine, and if the pedal doesn't move, the booster is not functioning. I did this and my pedal did not move. I knew I had good vacuum, so I replaced the booster with a rebuilt unit and what a difference!. Mine's a 74 with front drums, and I was thinking of converting to a disc brake 44, but I see no need to do this now, it stops great even with 39.5 swampers.
