Junkyard electric vacuum pump for brake booster?

[DaveC]

What is everyone using for a stand-alone vacuum pump for a power brake booster? Do any of the oem vehicles have a 12v vacuum pump that functions stand-alone? Or any affordable aftermarket pumps? Just a street car, not going to be tracked or driven (too) aggressively!
Thanks!
Dave

 

[JP Verweij]

Hella UP28 can be found on several domistic cars like Volvo's. Works great.
Pulls enough vacuum for two brake servo's.
Switched trough a brakelight switch.
Pulls 25-28inhg vacuum instandly.

 

[DaveC]

Thanks! That unit looks like a great option.
Just running the pump on a relay activated by the brake switch, do you have a delay in brake assist? What about panic braking?

Reading, looks like
1. some are running it on a pressure switch that kicks on when pressure drops below a threshold.
2. some are running a vacuum reservoir in line with the pump.

 

[Neil]

What is everyone using for a stand-alone vacuum pump for a power brake booster? Do any of the oem vehicles have a 12v vacuum pump that functions stand-alone? Or any affordable aftermarket pumps? Just a street car, not going to be tracked or driven (too) aggressively!
Thanks!
Dave

Look for a diesel-engined pickup truck in and junkyard. Diesels don't generate a vacuum so they use an electrically-driven pump to create vacuum for brake and cruise control servos. A Dodge Ram pickup has a nice little pump. Rock Auto also sells them.

 

[Larry L.]

This is the one I've used on my radical cammed street machines.
'Does EXACTLY what the company SAYS it will.
(The price has gone UP a bit since I bought my last ore about 4-5 years ago though...)

Black Bandit Vacuum Pump Kit | Electric Vacuum Brake Booster

Transform your vehicle's braking system with Black Bandit electric brake booster vacuum pump kit. It enhances your brakes' responsiveness and consistency.

leedbrakes.com

 

[Bill Kearley]

Dave have a look at a vacuum reservoir ! The right size will give you several brake applications.

 

[JP Verweij]

Thanks! That unit looks like a great option.
Just running the pump on a relay activated by the brake switch, do you have a delay in brake assist? What about panic braking?

Reading, looks like
1. some are running it on a pressure switch that kicks on when pressure drops below a threshold.
2. some are running a vacuum reservoir in line with the pump.

I have severals cars converted to a run a Hella UP28.
Just hooked up to the brake servo, switched by the brakelight switch, and ofcourse a relay in the wiring.
There is absolute no delay in brake assist. It pulls more inhg vacuum then your engine does and way quicker.
On a night over you might experiance a delay on the first push.
It works fine in compettition also.

 

[DaveC]

Great info, everyone. Appreciate it!