Vortech Blow-Off
I'd prefer to give as complete an answer as I can instead of not the whole truth
It was part of the factors of needing a bypass valve, not the primary, but at least a partial factor
the power it takes to turn the blower at idle isn't much partly because the bypass valve is there bleeding off pressure in the first place
part throttle parasitic loss does have something to do with the bypass valve because the bypass valve is open
It was part of the factors of needing a bypass valve, not the primary, but at least a partial factor
the power it takes to turn the blower at idle isn't much partly because the bypass valve is there bleeding off pressure in the first place
part throttle parasitic loss does have something to do with the bypass valve because the bypass valve is open
Last edited by sentry65; Feb 11, 2008 at 04:07 PM.
in the end, whether you use a modd'ed hks or a the vortech bypass, it will still NEVER sound like a turbo car. If you wanted a blowoff valve, you shoulda bought a turbo. You have a supercharger so you have to live with a bypass valve and its venting while not on boost.
^Not the whole truth. You could get one of these
Link
Actually, in the next few weeks, I'm going to be rigging a new CAI and during the process, I am going to try to reroute the venting to somewhere deep in the engine bay in hopes of reducing the loud bpv
Link
Actually, in the next few weeks, I'm going to be rigging a new CAI and during the process, I am going to try to reroute the venting to somewhere deep in the engine bay in hopes of reducing the loud bpv
Originally Posted by QuadCam
Battle for Vortech Supremacy!
Misleading people into thinking something that has nothing to do with a subject DOES !
Sentry
Find me something on why a bypass valve is ran and needed on a SC that includes.... parasitic loss as [A REASON] for using it .
We both agree that it would take a little more hp to turn the blower with the bov close all the time . But it isnt a reason for running a bypass bov. It is a byproduct so to speek of it , but not a reason for it . Plain and simple ....you cant split hairs on your statement to try to explain it . It doesnt apply ...it doesnt hold water
And the more I think about it....as long as you stay into vacuum and not boost . There wouldnt be any extra loss in hp to turn the blower . As long as there is vacuum created by the motor the blower isnt going to be any harder to turn . Which includes Idle, cruise , and light throttle
Last edited by booger; Feb 11, 2008 at 05:45 PM.
Originally Posted by Dreamsmith
so i understand the greddy type-s or type-rs will work after removing one of the springs, what about blitz?
And which of those are a direct fit, i dont need to customise it to fit?
And which of those are a direct fit, i dont need to customise it to fit?
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Joined: Oct 2007
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From: Palo Alto
Originally Posted by Dreamsmith
so i understand the greddy type-s or type-rs will work after removing one of the springs, what about blitz?
And which of those are a direct fit, i dont need to customise it to fit?
And which of those are a direct fit, i dont need to customise it to fit?
Originally Posted by booger
I could care less with that ^^^^^^
Misleading people into thinking something that has nothing to do with a subject DOES !
Sentry
Find me something on why a bypass valve is ran and needed on a SC that includes.... parasitic loss as [A REASON] for using it .
We both agree that it would take a little more hp to turn the blower with the bov close all the time . But it isnt a reason for running a bypass bov. It is a byproduct so to speek of it , but not a reason for it . Plain and simple ....you cant split hairs on your statement to try to explain it . It doesnt apply ...it doesnt hold water
And the more I think about it....as long as you stay into vacuum and not boost . There wouldnt be any extra loss in hp to turn the blower . As long as there is vacuum created by the motor the blower isnt going to be any harder to turn . Which includes Idle, cruise , and light throttle
Misleading people into thinking something that has nothing to do with a subject DOES !
Sentry
Find me something on why a bypass valve is ran and needed on a SC that includes.... parasitic loss as [A REASON] for using it .
We both agree that it would take a little more hp to turn the blower with the bov close all the time . But it isnt a reason for running a bypass bov. It is a byproduct so to speek of it , but not a reason for it . Plain and simple ....you cant split hairs on your statement to try to explain it . It doesnt apply ...it doesnt hold water
And the more I think about it....as long as you stay into vacuum and not boost . There wouldnt be any extra loss in hp to turn the blower . As long as there is vacuum created by the motor the blower isnt going to be any harder to turn . Which includes Idle, cruise , and light throttle
already been over it in earlier posts...
Booger/sentry
Ok. I am going to clear this up for both of you so you can stop the bickering. I will dyno my darn car with the supercharger not even hooked up to the intake system, once with the belt on, and once with the belt off. I will tell you exactly how much power our 350z's w/6mt loose via spinning the blower soley.
Facing facts, the sole purpose behind a bypass valve is to prevent compressor surge. Anything else is a by-product that is not its main intention. For example, in a down shift, depending on your style you may not have the throttle body open but will spin the blower to high rpms. All the air has to be vented to prevent it from trying to go back out through the gap in the impeller vanes.
I will also have a pressure gauge on my supercharger volute so I will tell you once and for all if there is an internal pressure with in the volute (not to be confused with internal compression like a roots).
Ok. I am going to clear this up for both of you so you can stop the bickering. I will dyno my darn car with the supercharger not even hooked up to the intake system, once with the belt on, and once with the belt off. I will tell you exactly how much power our 350z's w/6mt loose via spinning the blower soley.
Facing facts, the sole purpose behind a bypass valve is to prevent compressor surge. Anything else is a by-product that is not its main intention. For example, in a down shift, depending on your style you may not have the throttle body open but will spin the blower to high rpms. All the air has to be vented to prevent it from trying to go back out through the gap in the impeller vanes.
I will also have a pressure gauge on my supercharger volute so I will tell you once and for all if there is an internal pressure with in the volute (not to be confused with internal compression like a roots).
Originally Posted by Quamen
Booger/sentry
Ok. I am going to clear this up for both of you so you can stop the bickering. I will dyno my darn car with the supercharger not even hooked up to the intake system, once with the belt on, and once with the belt off. I will tell you exactly how much power our 350z's w/6mt loose via spinning the blower soley.
Facing facts, the sole purpose behind a bypass valve is to prevent compressor surge. Anything else is a by-product that is not its main intention. For example, in a down shift, depending on your style you may not have the throttle body open but will spin the blower to high rpms. All the air has to be vented to prevent it from trying to go back out through the gap in the impeller vanes.
I will also have a pressure gauge on my supercharger volute so I will tell you once and for all if there is an internal pressure with in the volute (not to be confused with internal compression like a roots).
Ok. I am going to clear this up for both of you so you can stop the bickering. I will dyno my darn car with the supercharger not even hooked up to the intake system, once with the belt on, and once with the belt off. I will tell you exactly how much power our 350z's w/6mt loose via spinning the blower soley.
Facing facts, the sole purpose behind a bypass valve is to prevent compressor surge. Anything else is a by-product that is not its main intention. For example, in a down shift, depending on your style you may not have the throttle body open but will spin the blower to high rpms. All the air has to be vented to prevent it from trying to go back out through the gap in the impeller vanes.
I will also have a pressure gauge on my supercharger volute so I will tell you once and for all if there is an internal pressure with in the volute (not to be confused with internal compression like a roots).
If you would like to find out what it exactly takes to spin the blower by itself . It would be interesting to know , but not important to me .
My point was to simply correct Sentry's misleading statement that the reason for the bypass vlave was for compressor surge [ damage to the blower ] and parasitic loss . WHen we know parasitic loss isnt a reason at all for it .
Sorry to bring this one back up, but some quick questions that i'm trying figure out...
People are saying the that bypass valve stays open whenever there is vacuum. But I assume it closes at very little vacuum, like -3 or something? If not, then how would boost ever build up? Is that what is adjustable on it - the point at which it opens/closes?
Also, since there's vacuum until WOT, do you pretty much need to be at WOT in order to get any boost at all?
People are saying the that bypass valve stays open whenever there is vacuum. But I assume it closes at very little vacuum, like -3 or something? If not, then how would boost ever build up? Is that what is adjustable on it - the point at which it opens/closes?
Also, since there's vacuum until WOT, do you pretty much need to be at WOT in order to get any boost at all?
Originally Posted by JonnyC
Sorry to bring this one back up, but some quick questions that i'm trying figure out...
People are saying the that bypass valve stays open whenever there is vacuum. But I assume it closes at very little vacuum, like -3 or something? If not, then how would boost ever build up? Is that what is adjustable on it - the point at which it opens/closes?
Also, since there's vacuum until WOT, do you pretty much need to be at WOT in order to get any boost at all?
People are saying the that bypass valve stays open whenever there is vacuum. But I assume it closes at very little vacuum, like -3 or something? If not, then how would boost ever build up? Is that what is adjustable on it - the point at which it opens/closes?
Also, since there's vacuum until WOT, do you pretty much need to be at WOT in order to get any boost at all?
the set screw on top determines what vacuum level your bypass valve closes. and ya, you have to really be on the gas for it to build boost.
Originally Posted by JonnyC
Sorry to bring this one back up, but some quick questions that i'm trying figure out...
People are saying the that bypass valve stays open whenever there is vacuum. But I assume it closes at very little vacuum, like -3 or something? If not, then how would boost ever build up? Is that what is adjustable on it - the point at which it opens/closes?
Also, since there's vacuum until WOT, do you pretty much need to be at WOT in order to get any boost at all?
People are saying the that bypass valve stays open whenever there is vacuum. But I assume it closes at very little vacuum, like -3 or something? If not, then how would boost ever build up? Is that what is adjustable on it - the point at which it opens/closes?
Also, since there's vacuum until WOT, do you pretty much need to be at WOT in order to get any boost at all?
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