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-   -   Vacuum pump question (https://www.racingjunk.com/forums/showthread.php?t=28405)

Birddog95 07-07-2010 11:56 AM

Vacuum pump question
 
Which is better in a bigger cubic inch racing deal... a three vane or a four vane pump, and why?

Birddog95 07-07-2010 11:57 AM

I guess I should clarify, 598 cu in....

hammertime 07-07-2010 06:26 PM

Depends on the brand your looking at I assume Moroso.
I 4 vane is for a dry sump situation, but many use them with a relief valve, I run the 3 vane without a relief valve it pulls 8" @ idle and 12 down track.

TheRabbit 07-08-2010 06:07 AM

I run a Moroso 3 vane on my 632 with a dry sump and without a relief valve. I've got no idea what it pulls going down the track. I have a hard enough time just going down the track much less trying to look at that little bitty guage :lol: It does pull 12lbs at about 3,000 and above. I don't have a guage in my new truck yet.

curtisreed 07-08-2010 07:23 AM


Originally Posted by TheRabbit
It does pull 12lbs at about 3,000 and above. I don't have a guage in my new truck yet.

Be careful might suck the valve covers in. :lol: :lol:

Curtis

Sorry Rabbit sometimes I just can't resist.

TheRabbit 07-08-2010 04:39 PM


Originally Posted by doorracer

Originally Posted by TheRabbit
It does pull 12lbs at about 3,000 and above. I don't have a guage in my new truck yet.

Be careful might suck the valve covers in. :lol: :lol:

Curtis

Sorry Rabbit sometimes I just can't resist.

Don't worry, I've had a lot of those kinda days lately. Most are self induced :shock:

coolbeans 07-19-2010 07:21 PM


Originally Posted by Birddog95
I guess I should clarify, 598 cu in....

Any idea how well the motor is sealed? More blow by needs more pump.

bbchevy 07-19-2010 07:39 PM

???
 

Originally Posted by coolbeans

Originally Posted by Birddog95
I guess I should clarify, 598 cu in....

Any idea how well the motor is sealed? More blow by needs more pump.

MORE BLOW BY,NEEDS a FRESHEN Up!Not a Vac.Pump,these are NOT BANDADES~!

Later
G 8)


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