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-   -   Anyone Tried This: Poor Man's Vac Pump (https://ls1tech.com/forums/forced-induction/837285-anyone-tried-poor-mans-vac-pump.html)

NemesisC5 Dec 30, 2007 01:05 PM
Anyone Tried This: Poor Man's Vac Pump
 
I saw this on Racetronix website & could not help but be curious if anybody here has tried this. I'm not sure if factory AIR pump moves enough air to be much/any help. If not could you overdrive it with BAP??? :cheers: "Flame Suit On" :chug:

http://www.racetronix.com/product/RX-CEPH/RX-CEPH.html

Cliff99C5hardtop Dec 30, 2007 01:11 PM
Interesting......I removed my pump completely but can put it back easily. I wonder who is using it also and if they have any pics.

will62085 Dec 30, 2007 01:23 PM
i didnt use that harness, but had mine hooked up that way. it sucked oil in and the pump quit after a very short time. Dunno if the oil had anything to do with this or not?

NemesisC5 Dec 30, 2007 01:26 PM
Originally Posted by will62085 (Post 8391846)
i didnt use that harness, but had mine hooked up that way. it sucked oil in and the pump quit after a very short time. Dunno if the oil had anything to do with this or not?
Did you incorporate catch can into your design?

blacktransam Dec 30, 2007 01:28 PM
the roundy round guys love our air pumps for that reason.. tons of guys run them this way with awesome results.. i'd do it..

will62085 Dec 30, 2007 01:52 PM
Originally Posted by NemesisC5 (Post 8391857)
Did you incorporate catch can into your design?
yes, but oil still built up in the pump

shoemike Dec 30, 2007 02:51 PM
that thing is suitable for crankcase evac.

MIGHTYMOUSE Dec 30, 2007 05:25 PM
this is my home brew from 2001
http://www.youtube.com/watch?v=v_ChdA_AjL0

after a month or so of daily driving the pump stopped working probably from choking on oil.

will62085 Dec 31, 2007 01:31 AM
Originally Posted by MIGHTYMOUSE (Post 8392980)
this is my home brew from 2001
http://www.youtube.com/watch?v=v_ChdA_AjL0

after a month or so of daily driving the pump stopped working probably from choking on oil.
yeah, i think mine lasted like two weeks?

ls1290 Dec 31, 2007 08:21 AM
The pump is not designed to run for any type of extended periods of time. Its purpose is to add extra 'fresh' to the exhaust to help heat up the cats and then turn off. Plus it does not move much air, so the vacuum aspect will be poor at best.

Keith

speedracer5532 Dec 31, 2007 10:19 AM
How would it work if used with the racetronix harness that has a hobbs switch with it, so the pump would only work when say above 4 lbs of boost.

NemesisC5 Dec 31, 2007 10:53 AM
Originally Posted by speedracer5532 (Post 8396693)
How would it work if used with the racetronix harness that has a hobbs switch with it, so the pump would only work when say above 4 lbs of boost.
I Agree, that is my point of this thread. I know it does not pull much vac, but how much does it pull?? Since it runs only above 3-4psi boost could it be could it be powered by BAP to increase vacuum??...And if others that have tried the unit all to have it fail for ingesting oil, it seems that it was doing its job, however needs some type of catch can, particulate filter, or Watts coalescing filter or combo of the ones listed. Having a centri supercharger on my car there is not much room for genuine belt driven vacuum pump, if someone could invent an alternative it could be helpful to many. Just my $.02 :cheers:

TAQuickness Dec 31, 2007 01:05 PM
I think this topic was hit on in the external Gen3 section. From what I've read, the stock AIR pump is weak nuts and prone to fail in a short period of time.

flash12t Dec 31, 2007 09:57 PM
how would it work it if was ran off an ls6 valley cover less oil to choke the motor. .

gametech Dec 31, 2007 10:21 PM
The valley cover pulls even more oil than the valve covers. This only works "sort of ok" in a very temporary manner. The pump just isn't up for any real abuse, and will fail in short order.


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