Hydroboost brake system (1 Viewer)

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Jan 28, 2007
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Beaverton, Oregon
My vacuum booster is giving up the ghost and a replacement is close to $300. Has anyone put a hydroboost on their 60 ? If so, how much did it cost ? and how did it work out ? This is my DD so I need reliability and predictability. Is this a reasonable direction to go in ?

Thanks for any input
Bill
 

Tapage

Club 4X4 Panamá
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Hydro boost it's nice .. I was just one step away from doing that .. the only thing that stops me, it's the PS pump dependance ..

But down here I have few friends with hydroboost in their Cruiser and brakes as a sport car .. you just need to touch it and it stop !
 
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Hillsboro, OR
Boots 's rig is Hydroboost. There is some info in his Family Haulin' thread in the hardcore section. I am currently swapping over to the Hydroboost system as well.

That being said... I'm in Hillsboro and I have my old vacuum system out of my 60 that I'd go for DIRT CHEAP if your interested.
 
Joined
Oct 18, 2004
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West Georgia
you are going to spend some coin that mill make that new booster appear a great bargain.

i disagree with this....you can get the hydroboost/master cylinder at pull-a-part for $50 then all you need is two hydraulic lines made should be able to do the whole thing for approx. $100
 
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Virginia Beach, VA
I've got hydroboost, it uses a GM master cyclinder. It came off the P-30 step van that my 4bt was in. But, the original was in such rusted shape and leaking that it had to be replaced with a new one. There's nothing that great about it - although it will lock up the front wheels if you step on it hard enough, the pedal is very very stiff. It took me over a week to get used to having almost no play in the brake pedal. Sometimes it feels like you're pressing on a brick wall. There's no apparent give, but the truck stops just fine.
 

dgangle

total rice
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i disagree with this....you can get the hydroboost/master cylinder at pull-a-part for $50 then all you need is two hydraulic lines made should be able to do the whole thing for approx. $100

I disagree with you.

A good used booster can be anywhere from free to less than $50. Bolt on & go. No pump, no lines, no fluid, no mess. Doesn't provide the same pressure/stoping power as a HB but unless your axles, tire size, GVWR or specific driving requirements warrant, it is overkill. And considerably more complicated.

As for donor vehicles, look for anything domestic 1-ton and larger.
 
Joined
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I've got hydroboost, it uses a GM master cyclinder. It came off the P-30 step van that my 4bt was in. But, the original was in such rusted shape and leaking that it had to be replaced with a new one. There's nothing that great about it - although it will lock up the front wheels if you step on it hard enough, the pedal is very very stiff. It took me over a week to get used to having almost no play in the brake pedal. Sometimes it feels like you're pressing on a brick wall. There's no apparent give, but the truck stops just fine.

What did you replace your master with? Size? Sounds like it's a little mismatched for the rest of your system.



I got one of my HBr's from a chevy astrovan.
 

Tapage

Club 4X4 Panamá
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there a few mustangs believe from 95 IIRC that used to have hydroboost .. good nice one units ..
 
Joined
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Virginia Beach, VA
What did you replace your master with? Size? Sounds like it's a little mismatched for the rest of your system.


I got one of my HBr's from a chevy astrovan.

I think my was a direct replacement for the one out of the p-30. It looks identical to yours :D
Out of curiosity, mine was a re-man unit, and the lid doesn't seal so well. So when I'm on the trail at a steep angle some fluid always pours down the side. Is this common?
 

ntsqd

technerd
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No, that should not be happening.

I'm guessing that you've got a massively large bore master on there. Try something in the 1-1/8" to 1-1/4" zone.
 
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I'm not using the original MC that came from the stepvan anymore. I did start with it, tried a smaller bore MC (1 1/4" I think), had my HB start to leak so I bought another in the junkyard (chevy astro) that had an MC attached and that's what I'm at right now. So I am currently running a 1 1/8" bore MC and it's pretty good. If you can find a 1 1/16" bore MC I think that would be just about perfect but I'm plenty happy with my current set up to not spend the money on changing it. I want to say the stepvan MC was something like 1 5/8" but don't take that as fact. Hope you can get it dialed in a little better.
 
Joined
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I disagree with you.

A good used booster can be anywhere from free to less than $50. Bolt on & go. No pump, no lines, no fluid, no mess. Doesn't provide the same pressure/stoping power as a HB but unless your axles, tire size, GVWR or specific driving requirements warrant, it is overkill. And considerably more complicated.

As for donor vehicles, look for anything domestic 1-ton and larger.

SO what do you disagree about?.....that it can't be done for $100 or less? cuz i know you can......i never said it was easy;p
 

D'Animal

Rescuer of Beagles & Landcruisers
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What engine are you running?

My vacuum booster is giving up the ghost and a replacement is close to $300. Has anyone put a hydroboost on their 60 ? If so, how much did it cost ? and how did it work out ? This is my DD so I need reliability and predictability. Is this a reasonable direction to go in ?

Thanks for any input
Bill

I got a rebuild Wabco for my 4BTA for $165. It came with a warranty, DVD on how to install it, all the special seal installing tools, ect.

My "Set Up" is

Cummins 4BTA
Wabco pump in front of the Power steering pump
1/2 gallon vacuum tank
FJ80 Booster
Mini Truck (disc front drum rear) master with 1 1/8" bore (I think)

Works great.
 

D'Animal

Rescuer of Beagles & Landcruisers
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Gear Drive.

I dont have any pics of the entire setup on the garage computer but the rebuilt one comes with the new drive coupler installed.
DSCF7078.jpg
DSCF7075.jpg
DSCF7074.jpg
 

Tapage

Club 4X4 Panamá
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that means you open your PS pump and attachet it directly .. ? I was thinking in some electrica vaccum maker .. that would allow me to run a bigger alt in Tencha
 

D'Animal

Rescuer of Beagles & Landcruisers
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