Electric Vacuum Pump for brake booster

[grego37]

Im about to re-do my brakes and I want to go to a power booster but have 10 inches of vacuum at idle. I was told you need 16inches for it to work properly.

I cant go to a hydroboost unit.

Im considering an electric vacuum pump.
Is there anyone out there using one of these?
do they work good, and how loud are they?
thanks.

 

[10secgoal]

You may 16 for a constant use. But have you thought about just a vacuum container ? The container holds the vacuum until you need it. Hell, you may even be able to make one of those.

 

[grego37]

Good idea, but its a street car with repetative braking,so I want a guarantee it will stop when I brake everytime, I want the same result everytime I brake.I cant afford that one time when I hit the car in front of me.
There are a few different companies making these pumps.
New electric vehicles come with these pumps too.

 

[2nd Mustang]

Are you running a radical cam to get that 10 inches of vacuum? My engine has 14 inches of vacuum at idle and is adequate for the power booster.

 

[4MuscleMachines]

My stroker cleveland has a bit over 10" of vac and I use a vac can. They guys who installed it tried a vac pump (ssbc?) and they did not like it and the can works fine for me. Never a hard pedal.

 

[grego37]

the cam is on the bigger side.

I'll consider the can idea, but will wait to get more feedback on pump users and can users.

I will be using a slightly smaller booster too, 8" but not as long as stock.fitment issues.
As featured in previous Mustangs and Fords articles (made by trans-am racing)

 

[Max Power]

I run between 10-12 at idle and don't have any problems. You almost never brake at idle (other than being stopped, which works fine). Hang a vacuum gauge on it and see what your vacuum is when you are driving normally. You might be surprised.

 

[HHStang]

Hydroboost is the only way to go.

 

[BIG-MAC]

HHSTANG: Did you DIY your hydroboost? If so can you provide any details?

 

[66forfun]

buddy in a pontiac did one of those $350 elec pumps, it was loud and didnt work too well for him, he went with the canister. The newer cobras use the hyrda booster.

 

[ForceFed70]

Keep in mind that the transmission type makes a big difference here. You can get away with less vacum if you are running a manual transmission.

 

[C0V3R]

I started running an electric vac pump when my valves were leaking worse and worse. It worked really quite well. I went out of my way to muffle it by adding an extra baked beans can muffler to it which brought it down to a level that couldnt be heard over the engine.

I am in the middle of a rebuild and will be looking to sell it pretty soon. Let me know if you are interested in it! It wouldnt have even done 24hrs of work