Vacuum Pump Installation

[byates2]

I bought a vacuum pump for my power brakes because of the performance cam i have. I have installed everything and the pump is in place, just need to run the hoses.

There are 2 options on the directions. One is leaving the exhaust port open with no line attached to it and then running a hose from the intake vacuum and teeing up with vacuum pump vacuum port and running to the brake booster.

The other option is running a line straight from the vacuum pump port to the brake booster, and a line from the exhaust port to the intake vacuum.

I havent been able to find much info on this. What are the differences in the 2 options?

Should i have a hose runnning from the exhaust port to the intake vacuum or just have a line going from the vacuum to the vacuum pump and then to the brake booster

[Bigdav160]

Exhaust port to intake would probably keep the bugs out of it.

[byates2]

What do you mean bugs? actual bugs or problems in the engine?

The exhaust port has a wire mesh screen protecting it. I was wondering if there are any advantages going either way?

Would pushing more air into the intake from the exhaust port benefit at all?

Seems like if i have the vacuum inline with the engine it might take some strain from the pump. Dont know though

[snipescastle2]

I installed an Electric Vacuum Pump on my truck from a 2002 Audi A4, I made a vacuum reservoir out of a 2 lb. Oxygen bottle, I plumbed the pump to a check valve, tee'd that into the main vacuum hose, going to both the reservoir and the brake booster, and then onto a vacuum switch set for 22" of vacuum, then to the original type check valve on the booster. I had originally wired it directly to the vacuum switch, but the settings on it either cycle the pump off and on rapidly, or it stays on continuously. I think I'm going to wire mine through the brake switch to come on when I hit the pedal only, otherwise it just gets too hot. but, these pumps make vacuum rather easy and I got mine to make 25" vacuum by itself. Just an idea.
Ben