rickay726

Kind of confused as to how this would even hook up to a Ss/sc i searched but found nothing.

http://www.meganracing.com/products/...d=161&catid=73

Grimlakin

Ummm these have no impact because well because a supercharger doesn't suffer from negative pressure.

Turbo's spool off of exhaust gasses. When you shift it could cause a reversal of pressure flow thereby making the blow off valve worth while.

Superchargers spool off of your crank. Ie they are parasitic when not contributing to engine performance. That part isn't really needed to know but they way they make power or pressure is my spinning a turbine off of the main pulley of your motor. The overall effect is for a boost to power but it is slightly more stressful on the motor overall.

I hope that makes sense.

Most high end sports cars run off of a well made supercharger because turbo lag in the 400hp + range really smokes expensive tires and can cause spin-outs. The power band of a super charger or even twin supercharger is much smoother and thereby more drivable.

Ummm... I hope the extra education helped to make some more sense and if I am wrong I am positive I will get some corrections.

1gmfanatik

The only thing that will come semi close to a blow-off valve is if you tune her for the boost to kick in later on. For instance, the tune i have on my car makes it so my boost doesn't hit full till about 5K in first gear, beforehand you can kinda hear the boost bleeding off. It sounds like a Supra kinda. It's tough to explain, but our cars are internally gated.

DrPuttsSS/SC

Rickay, you really want a BOV, don't you. I saw your other post a few days ago.

rickay726

which posts from a while ago i really dont remember

1gmfanatik

Go turbo if that's what you really want.

Doc

ibtl

Area47

^^
im with this guy


SEARCH!

chevysalesman614

you cannot have a bov on a roots blower.

forced_induction

my car is set up that way, i don't have full boost until 4,500rpms in 2nd, you can hear the bypass valve letting the air out until then.

climber55

Yeah, if I want to hear a bov I drive my friends, Mazdaspeed 6.

Red2.4SS/SC

search ib4tl

Omega_5

Ah jeez... not another one...

DrPuttsSS/SC

Sorry, must have been someone else

rickay726

listen im not one of those "omg bov make your car uberfast tool guys" i was simply dint know you could hook a bov up to a supercharger but when i read that thing on the website i was like what? thaats why i made this thread, so for all of you ******** out there, there you go, otherwise to everyone else thanks for the answers

DrPuttsSS/SC

Don't take it personally Rickay. It helps to be a little thick-skinned here.

Not talking about you but it seems like every so often some 16-year-old gets on here and wants to know how to put a BOV on his non-turbo cause he thinks it's cool.
Some of the guys take that opportunity to jump on the kid with both feet because he didn't take a minute to search the board and see if his question had been answered before.

So don't let it bother you, ok?

MadboostSS

you can use a blow of valve if your using a vortec supercharger, one of my friends is running the same set up with his camaro ss

lilblackss/sc

despite what these people think if you get off the gas you still force pressure back into the motor so a blow off valve should be part of any style forced induction set up

braddddddd991

one word...cant

JRelly

Roots superchargers cant have a BOV, no need for it

beamSS

im ibtl too!

Pully Police

Our cars do not need a BOV because we have a diverter valve built into the blower housing - it controls boost in the intake manifold and also allows the blower to "freewheel" during steady-state cruising. Also, our throttle plates are located BEFORE the blower, not after - no pressure wave to bounce back off of the closed throttle plate and destroy the rotors. Our blowers are also positive displacement type as opposed to variable pressure ratio type (Turbo's, Centrifugal Superchargers) - they pump a fixed amount of air per revolution no matter how fast they spin (unlike a turbo or Centrif. SC) so at low or high RPM's you will (basically) have the same pressure ratio in the inatke manifold (assuming that the diverter valve is closed 100% of the time). A turbo's pressure ratio changes depending on it's rpm and efficiency curves and a Cent. SC'c pressure ratio changes based on the engine RPM...and in both cases, they would need a DV (Bleed pressure back to a point before the compressor intake) or a BOV (bleed excess pressure to the atmosphere).

Clear as mud??

Deathcult

well i would like to have a BOV on my car. idfc what anyone thinks i think its cool. sorry im not 40+ like what you all like. =)


now that i jut dissed the crap out of the majority of the community here, stop trying to pick fights with the young crowd (for those who were)

oh oh oh and like i always said, learn to pick your fights...just like your married. =)

Preowner

I like the idea of hearing rotors clawing for air more when you punch it rather than blowing off steam after the fact.

But if thats what you want you bought the wrong car... basicly.

I thought BOVs mess with the ECU anyway, making it think it's getting more air than it realy is. The reason you don't see them on cars out of the factory

Pully Police

You are correct. In cars that meter mass air flow, the BOV will cause the O2 sensor to see less air then the MAF (Metered air is being discharged to atmosphere) - this will cause the ECU to freak out as well as the car will run too rich during on/off throttle transitions. This is usually corrected by relocating the MAF sensor close to the intake manifold downstream of the BOV.