Vacuum pumps, can some one shed some light on them?
04-14-2004, 04:43 AM
#1
Le Mans Master
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Vacuum pumps, can some one shed some light on them?
I was thumbing through Jegs and came across Vacuum pumps.
From what i understand of them is that they suck air out of the crankcase instead of just venting or using a PCV.
Is that correct, and what type of gains would one expect, i wouldn't expect over 3 or 4, definitely not worth the few hundred bucks
MAtt
From what i understand of them is that they suck air out of the crankcase instead of just venting or using a PCV.
Is that correct, and what type of gains would one expect, i wouldn't expect over 3 or 4, definitely not worth the few hundred bucks
MAtt
04-14-2004, 02:07 PM
#2
Melting Slicks
Re: Vacuum pumps, can some one shed some light on them? (pillowmeto)
I was thumbing through Jegs and came across Vacuum pumps.
MAtt
MAtt
I belive that the rings will seal better if theres a good vacuum in the crankcase. :cheers:
04-14-2004, 02:09 PM
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Melting Slicks
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St. Jude Contributor
Re: Vacuum pumps, can some one shed some light on them? (pillowmeto)
Is it also for those with radical cams who produce insufficient vacuum at idle?
How much are the Swedish ones?
:party:
How much are the Swedish ones?
:party:
04-14-2004, 02:16 PM
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St. Jude Donor '05-'06
Re: Vacuum pumps, can some one shed some light on them? (pillowmeto)
I thought the vaccumn pumps were for cars with radical cams or diesels.
That is why many new trucks/cars have the hydroboost brake systems. This way they are not reliant on vaccumn.
That is why many new trucks/cars have the hydroboost brake systems. This way they are not reliant on vaccumn.
04-14-2004, 02:30 PM
#5
Safety Car
Re: Vacuum pumps, can some one shed some light on them? (stingry)
[Austin Powers Voice on] They're not my bag baby!...Yeah [Austin Powers Voice off]
04-15-2004, 09:06 AM
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Le Mans Master
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Re: Vacuum pumps, can some one shed some light on them? (joeveto)
Is it also for those with radical cams who produce insufficient vacuum at idle?
MAtt
04-15-2004, 09:12 AM
#7
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Re: Vacuum pumps, can some one shed some light on them? (pillowmeto)
You can use a vacuum reserve can, some remove the washer reserve and put the can in that area.
04-15-2004, 10:44 AM
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Re: Vacuum pumps, can some one shed some light on them? (Fevre)
The vacuum pumps you are referring to are for high revving racing engines. They actually create a partial vacuum in the crankcase minimizing friction and windage. Not much use on a street engine though.
04-15-2004, 05:18 PM
#9
Le Mans Master
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Re: Vacuum pumps, can some one shed some light on them? (Fevre)
You can use a vacuum reserve can, some remove the washer reserve and put the can in that area.
The vacuum pumps you are referring to are for high revving racing engines. They actually create a partial vacuum in the crankcase minimizing friction and windage. Not much use on a street engine though.
MAtt
04-15-2004, 09:36 PM
#10
Race Director
Re: Vacuum pumps, can some one shed some light on them? (pillowmeto)
I'm running a 1970 LT1 in my C2 that has been rebuilt with lower compression (11:1 to 10:1) hydraulic lifters - ported, polished, blah blah blah. To bring back the HP we installed a radical cam (don't remember the specs...) so I have like 6 inches of vac - no good for power brakes. I installed a $35.00 vac reservoir from Summit and now I have over 25" of vac according the the gauge on the reservoir. Works great and the engine even idles better. :party:
