So, I just got back from driving around, and a yellow SS/SC came up next to me...

A chick was driving, so I couldnt resist the temptation when she revs it up... lol

The light turns and we go peeling off. I jump in front no problem... from what I could tell, she had nothing to to it at that point in the race.

All of a sudden, she shifts, and I hear it... An F'in BOV! I was surprised and astounded that I almost lost sight of winning the race. We get to the next light, and I role my window down and she the same. I ask her, "Is that a BOV I heard?" "Sure is", then she revs it and I hear the awesome sound of pressure release of the BOV.

She then took off, and I turned. Is this even possible? If so, where on eart would you put it?

Thanks for the input...

 

there is a speaker fake blow off valve also that you can set to tps or a switch or a button switch so thats one possibility

 

maybe it was turboed? or her wastegate was really loud lol.

 

a BOV on the supercharger is just not gonna happen man...maybe she had some crazy turbo setup under the hood?

TEXAS/////ROCKS BRO>>

 

It had to be one of two things a real turbo or one of thoes things you stick in you muffler.

 

No, im sure of it. It was a real one, not one of the knock offs. My friend with a 2.2 has one of those and it sounded nothing like it. It was an actual BOV... But lets say for sake that it was the speaker thing... ok she lied and just wants to have fun with it. But lets say it was a real BOV, where would she put it?

 

Well, if it was turboed... lol... she lost TERRIBLY!

 

Most girls and 35% of guys cant shift worth a damn.

 

You should go find her, and ask where she put her blow off valve. Then show her where you put yours... >=D

 

Haha... that would be a tough one with my fiance lol. ANYONE have an idea where she put it?

 

you cant put a bov on an eaton style blower, only centrifical

 

The "compressor" or more correctly "blower" is located after the throttle plate on these cars. Even if you mounted one, you couldn't open it because the pressure on both sides of the BOV would be equal and wouldn't be able to overcome the internal spring pressure.

 

Maybe she was twincharged, that is a definitely possibility. Did the car whine like it still had the supercharger?

 

Hmmm, this indeed is interesting. Mmm, a BOV would to me at least mean she has a turbo setup of some sort. Find her and ask her! Was she hot BTW?

 

Correct me if im wrong but a BOV is basicly the same thing as our by-pass valve, NO?

They both release pressure, though for different reasons. Also the BOV vents to the atmosphere and our by-pass's vent to the intake (actualy it lets the engine draw from the supercharger before the rotors). Vent may not be the right word to use but the result is the same, reduced pressure.
You can install a BOV to release boost at set levels for the SS/SC, some on here have them installed and working, using them to limit boost on superchargers that are overdriven to the point of dangerous pressure. I believe someone on here has one set to release at 17 PSI, though his set-up can produce 22. This is a good way to limit your pressures until you can get the parts necessary to handle 22 psi. Where in the system do you install it? I don't know, I'm sure if you search the threads you'll find the guys using them.

If it were up to me I would weld the port shut and do away with the by-pass. Acording to eaton and GM, we have by-pas valves for economy and longevity. Without it GM would not be able to warrenty the SS/SC for 100K, nor would you get the great mileage we get as the supercharger would almost always be under pressure and drawing HP to drive it.
Not to mention it would also be producing heat almost all the time.

Honostly guys, if you want to hear the pssssssssst of a boosted engine every time you let off the gas, buy a car with a turbo.
And I must add that twin charging whether turbo or supercharging is for show. If it's your thing go for it, however you can't do any more with twins than you can with a single charger. Our engines do not draw the CFM even fully modded to use twin chargers, a single charger is more than enough for even a fully modded LSJ. If your approaching the limits of the stock supercharger, port it, buy a bigger one, port the intake & heads.

To drive twin chargers will not be efficient. Driving a turbo would be the way to go as the exhaust drives it, however you will never be able to fully use the boost you will have the capability of producing as our engines just aren't that big.
Even a 500+ Cubic Inch V8 does not require twins as there are chargers big enough to feed these engines. Why do you see twin turbos on some race cars? They are optimized for their application, meaning that they are not the largest you can buy, nor are they maxed out at operating speeds. Also if you running a long race and one fails, you can still keep racing.

Sorry so long guys, I get a little stressed on the blower/BOV/by-pas issue!
Remember, (some I'm sure will argue) you don't need a by-pass to run a supercharger UNLESS you are running such a small pulley that you are producing boost at idle, PERIOD!

OK, arguments please, LOL

 

Sorry dude, it recirculates pressure. The blower is ALWAYS trying to compress the air, all the bypass valve does, is equalize pressure before and after the rotors. If it allowed the engine to draw air before rotors, then wouldn't the IAT2 decrease in temp? Then why do the IAT2 INCREASE when you let off the gas? Because the presurized air (hot) is being recirculated back through the rotors.

 

We have blowers, not compressors. It doesnt recirculate, it bypasses. IAT2s climb because of the lack of cold air through the throttle plate.

 

The wall of text above assumes the power adder is a compressor. We have blowers. The greatest source of vacuuum is from the intake manifold, the restriction is from a closed throttle plate. The incoming air will take the path of least resistance, which is through the throttle body and through the bypass valve and into the greatest source of vacuum, the intake manifold.

Edit: a video showing the true reaction of a roots style bypass valve: http://www.cobaltss.org/media/2.0-Ecotec.wmv

 

who cares, goofy on the redlineforums tried a bov on his redline and it would hardly run, its more then likely one of those muffler ones, they can be really loud.

 

my first guess also, she probably got it off of Ebay

 

The blower its self is not trying to compress the air like a twin screw, but it is trying to move more air than the motor requires thus pressurizing air in the intake manifold.

 

The air is prohibited from entering the the supercharger because of a closed throttle plate. If it built pressure, the engine would continue to climb in RPMs. Its not that the engine won't accept more air, its the throttle prohibits air from entering the manifold.

Edit: To understand this better, remember the bypass is spring actuated. If the spring allows the valve to open when greater pressure exists after the supercharger rather than before, it would be open at WOT when you're building boost as well.

 

I just got OWNED

 

lol. nice try

i'd put my money on that just being a goofy exhaust bov wannabe. if the car was in fact turbo (not likely), you would have probably gotten your ass handed to you. interesting tho

 

either has a centri or a turbo. roots and twinscrew blowers cant have bov's. or she had the fakey ones. or you are trippin on acid.