Hydroboost brake cylinder

A

albjerryg

Senior Member
Has any one ever tried the hydroboost brake system on a 1941 ford coupe, with the under the seat mounting. Thanks Jerry
 
I don't have the answer to your question. But since no one responded, I'll suggest calling ECI.
 
Do you mean hydroboost---a brake booster using power steering pump pressure---or
servo booster, brake booster using engine vacuum, plumbed into the line from the master cylinder before the junction to the wheels
 
I mean Hydroboost using the power steering to power the brakes. It is a much smaler unit and I thought it might fit in place of the original brake cylinder. Thanks Jerry
 
Hydroboost units are attached to the master cylinder to directly push on the piston. So it would mount under the floor. Sufficient room may be a problem, unless you converted to swinging pedals and mounted it on the firewall.
 
I thought from the picture of the Hydroboost that it was smaller than the traditional 7" vacuum operated system???Thanks Jerry
 
the hydroboost unit is smaller in diameter, but longer, and it gives a different brake pedal feel than a traditional vacuum booster, there are different types of hydroboost, some with integral accumulator, some separate, the power steering pump could have a higher pressure (my 74chevy truck does), and a larger reservoir

one of the easiest types of power brakes to install in an exisitng system is the vacuum servo booster, just connect the brake pipes, and a vacuum hose, it can be mounted many places
 
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As Kurt mentioned, get a HydroVAC unit. Not too large, can be mounted under car. Are available & not too expensive. Pretty easy hookup
 
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Hi Kurt,

I'm interested in this type, "vacuum servo booster ... it can be mounted many places". I didn't see it on the Hydroboost web site.

I have a very old unit of this type but it needs replacement soon. Do you know where this type is sold?

Thanks
 
Hi Kurt

Very interesting read. Since Glen seems like he got his answer, I feel fairly comfortable asking my question.

My 40! has disc / drum. I'm running dual holly carbs. All vacuum is going there (windshield wipers are disconnected) would my car have suffecient vacuum to run a single booster?
 
Why not plop on a vacuum gauge and read it at idle and cruising along.
Give us a number, then we'll know the answer.
Martin.
 
scooder said:
Why not plop on a vacuum gauge and read it at idle and cruising along.
Give us a number, then we'll know the answer.
Martin.
Click to expand...

Hi Martin - I don't own a vacuum gauge. I was hoping someone would know or had a similar setup. Everything else is stock.
 
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If you have a stock engine (no wild cam), you should easily have enough vacuum. The dual carbs won't matter at all
Jim
 
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HydroVAC units were the earliest Power Brake units and were used on many vehicles, both domestic & foreign.
I installed one on my 1956 Ford Fairlane (car is not on the road yet).
If you have a dual Master cylinder on your car you will need two of them.
I am using an original new single Master on my car.
The hookup is pretty straight forward: Mount the device, run a vacuum line (3/8" diameter) directly from the intake manifold to the unit.
The brake line from the original master cylinder is routed to the Hydrovac unit.
The line to the brakes is then. adapted to the output from the Hydrovac to the brakes, as original.
Brake bleeding is first done by bleeding Master to Hydrovac, then regular bleeding to the rest of the system.
Here's where I got mine from a Company in Australia. The total price (delivered) was approx $ 150.00 (exchange rate considered). It arrived in 3 weeks.
You will be pleasantly surprised at the quality & completeness of the unit.
I'm told that it merely doubles the output line pressure to make braking easier.
I didn't want to clutter up the engine compartment in my car with the big diaphram
type used in newer cars, and like the option of the remote mounting.
If I had enough vacuum in my 32 Ford Flathead, I'd add one there too.
Here's the info:
http://www.ebay.com.au/itm/VH44J-26...ds-FITTING-KIT-BB-061-BXBOOSTER-/321837676809

Happy New Year
Jim
 
If you have a dual master you will to have 2 of these units, why cannot you just t it of the output and go to both the back and front///Jerry
 
You might wanna consider an electric power master cylinder if you're short on space and long on cash. 8^) Jack E/NJ
 
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