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#1
11-15-2006, 02:00 PM
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Vacuum Pump Questions
Does anyone know how much of a vacuum a cruise control vacuum pump is capable of? I realize they are all probably different. I'm asking because I need a 12v vacuum pump that is relatively small in size. It doesn't have to produce a lot of vacuum. If it could get up to like 9 psi or so that would be perfect. Are these little pumps capable of that?
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#2
11-15-2006, 02:03 PM
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Re: Vacuum Pump Questions
what's it for?
__________________
Seatbelts Saved My Life 
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#3
11-15-2006, 02:18 PM
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Re: Vacuum Pump Questions
Well it is for an invention I am building. I've been looking into little diaphragm pumps and things, but they cost much more than I would like to spend. A vacuum of 8 HG or greater would be great.
http://www.gastmfg.com/pdf/miniature/2D.pdf Basically something like that? Are any cruise control pumps capable of anything near that?
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#4
11-15-2006, 02:23 PM
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Re: Vacuum Pump Questions
they operate actuators on the throttle body, right? similar to the ones used on turbos?
if so, i guess they should be able to, but hopefully someone else on here can give a more difinite answer.
__________________
Seatbelts Saved My Life
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#5
11-15-2006, 02:31 PM
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Re: Vacuum Pump Questions
I would think it would be rare to find a "standard" vacuum pump for a cruise control since most are operated on manifold vacuum- gas engine. Have you tried looking for one for a diesel --- like a VW maybe??
__________________
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#6
11-15-2006, 11:13 PM
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Re: Vacuum Pump Questions
So I won't be able to find a vacuum that runs off of only a 12v input?
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#7
11-15-2006, 11:36 PM
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Re: Vacuum Pump Questions
What about a washer pump?
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#8
11-15-2006, 11:50 PM
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Re: Vacuum Pump Questions
Quote:
But they aren't common or easy to find. Let us know what you find.
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#9
11-16-2006, 07:26 AM
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Re: Vacuum Pump Questions
The other thing to consider is operating conditions. If you will be using this "under-hood", it should be made for this service because of the high temps otherwise it will fail quickly...
__________________
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#10
11-17-2006, 12:56 AM
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Re: Vacuum Pump Questions
Quote:
My temp sensors would read at the most 10 degrees C above ambient to one side of the engine bay (the side the exhaust was on).
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#11
11-18-2006, 12:53 AM
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Re: Vacuum Pump Questions
any positive pump can be turned into a negative pump. If you give us more details about the enviroment the pump will be dealing with (fluid? Air? Temps? Full range of pressures?) We might be able to offer suggestions. But with what you've offered so far, assuming weight and size aren't serious issues, a positive displacement fuel pump, such as holley red pump, would work well.
__________________
life begins at 10psi of boost Three turbo'd motorcycles and counting. 
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