Nitrous, Super Chargers, & Turbos - Can you install a Blowoff without a Turbo??

Hey i was wondering if you could install some type of blow off without actually having a Turbo. I love the sound of a Blow off valve while your shifting. Any way possible to get that without a turbo???

well... ive heard of an electric thing that supposedly sounds like one, but, that sounds like Rice to me. just save up for the turbo so you can cash the checks your BOV writes. i know it takes a while, ive been wanting a turbo for years, now im gettin close and i cruise with a bunch of turbo cars, so ive been bitten by the boost bug.

that bug is a bitch... the doctor bill is pretty high, haha

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Its totally pointless and it wont work. I read ablut something on ebay where its a speaker and it makes the blow off sound whenever you shift, but like said before... its at the top of the rice list.

yea man
its just not a good idea

How much is a turbo for a 89 honda civic hb with a 1.5liter. I mean FULL COMPLETE SETUP

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Yeah DO NOT BUY that fake turbo sound thing off ebay. I have seen it on a few cars around my house. Just a litting thing you stick in your exhaust, and I dont think it will even fit in an after-market exhaust. Dont false advertise, save up and get the real thing. Just my opinion.

there's not enough pressure to get the real BOV to work on a n/a engine.

i think if you put one on backwards, with the outlet going into the intake manifold, it might make a sucking noise, but then the vacuum which opens the valve would be lost, so i dont think it would open far enough or long enough to really make any noise. and also, if you let in a big shot of air when the throttle plate is closed, it will screw with the idle, so i dont think anything would really work. i dont think this is at all feasible, and im not suggesting it at all. im just throwing out a theory. and im sure as hell not going to drill a fat hole in my intake manifold to test it.

i agree with the rest of the guys just save up and buy the turbo

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THE RISK RICE LIST:

1. Windshield washer lights, seem cute, then you get clowned on eternally

2. Our non-turbo blow off valve, the bitches might enjoy it for a moment, but once they see you get smoked, enjoy spooning your pillow for the night

3. Exhaust ring tip light, cause hey, we all love lighting effects that require you to be a foot away to see them

4. "Chirpers", seriously, what the **** is the point?

5. The PVC fake roll bars in hatchbacks.............just plain sad.


I'd go so far as to say Altezzas, but I'm still debating whether or not I want to rock mine once I get my windows tinted. But what it all comes down to is your personal style. If you rock any of this and truly enjoy it, then right on. If you're doing this stuff to be a wannabe Fast and Furious superstar, then maybe it's time to look inside yourself, rather than to your car, to see what's really going to make you happy. Zen tao.

Let's watch the language ok!!!!!!!!!!! [:@]

4. "Chirpers", seriously, what the f*** is the point?

what is a chirper?

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yea wtf is a chirper? dont think ive heard of that

ORIGINAL: dalifts

Hey i was wondering if you could install some type of blow off without actually having a Turbo. I love the sound of a Blow off valve while your shifting. Any way possible to get that without a turbo???

Wow. You are completely missing the entire point of a blowoff valve. Let me try to explain this. A turbo uses the exhaust gasses to spin a turbine that pressurizes the air going into the engine. When you let go of the gas pedal when you are shifting, the throttle plate closes, causing a lot of back pressure. This extra pressure is realeased through the blow-off valve. In a NA engine, there is a vacuum, which is the exact opposite of pressure, created by the pistons on the intake stroke . Since a BOV makes the sound you are looking for because of pressurized air, im afraid you're out of luck unless you buy one of those rice BOV sound maker thingys. Or like sacicons suggested, you could try putting one on backwards. The only problem with that is that the BOV would be open all the time unless you had it set to like 20 - 25 psi. And even then it wouldnt make the sound when you shifted, just when you got into the higher RPM range.

http://www.sunamiturbo.com/

this is the website your thinking of it sounds pretty fruity. getting a some speakers to play a bov sound. oh well.

I can add some more to the rice list:

-putting part manufacturer's stickers on your car, if you don't have any of their products

-a fart cannon on a stock piping

-driving around with unpainted ground effects

-oh, and here's a little something to complement a fake BOV :D http://www.extremedimensions.com/3878.html

There's one more thing. I saw a saturn a few days ago that had a "VTEC tuning" sticker on the trunk lid. WTF? i couldn't stop myself from laughing.

If you dont want a turbo kit but want a BOV the only other way to have a REAL BOV is:

1. Get a centrifugal sc such as the paxton or procharger and instal a BOV

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ORIGINAL: LEVIII

why would a BOV stay open if installed backwards?

BOV dont open from the back pressure, they open from the vacuum in the intake manifold when the butterfly closes.

When you are accelerating in a naturally aspirated engine, theres a vacuum in the intake pipes right? So if you install a BOV upside down so that the part that is normally connected to the intake manifold (opens using vacuum) is actually sticking into the intake pipe where there is a vacuum, it would stay open. Correct me if I've overlooked something though.

im not sure (i doubt ANYONE is REALLY sure) but i dont think the vacuum at WOT would be enough to open the BOV, and if it did open it a little, the extra airflow would cancel the vacuum right? but then when you let off the throttle, the spinning engine would make a bunch of vacuum and open it, but i think that would surge your engine back up, thats where the problem lies.

ORIGINAL: andryuha


There's one more thing. I saw a saturn a few days ago that had a "VTEC tuning" sticker on the trunk lid. WTF? i couldn't stop myself from laughing.





thats one hell of an engine swap

i saw an accord with SVT badges on it once ?!?!?!?!





and please jsut give up on the BOV
get the turbo then you will have the sound u want

ORIGINAL: sacicons

im not sure (i doubt ANYONE is REALLY sure) but i dont think the vacuum at WOT would be enough to open the BOV, and if it did open it a little, the extra airflow would cancel the vacuum right? but then when you let off the throttle, the spinning engine would make a bunch of vacuum and open it, but i think that would surge your engine back up, thats where the problem lies.

Good point. Let's just leave it at this:
Don't install a BOV upside down on your intake. [sm=badidea.gif]

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no way, someone try it. i wanna know what happens.:D

I'll be the gunea-pig...gimme a free blow-off valve:-D

a used stock blow-off from an eclipse will be cheaper than the manifold you have to drill a hole in.

I'll do it on my 92 mirage...it has a bad tranny so drilling a hole in the manifold before sending it to the junk yard wouldn't hurd.... LOL it's gonna be funny as crap...my sis will laugh at me :-D

ORIGINAL: Kolhoznik

I'll do it on my 92 mirage...it has a bad tranny so drilling a hole in the manifold before sending it to the junk yard wouldn't hurd.... LOL it's gonna be funny as crap...my sis will laugh at me :-D

Hahah are you seriously gona do it? If you do, then you need to videotape everything. :D

hell yeah. im curious. i wish i had an extra bov to give you.

Well I'm gonnaask my friends at the junk yard to find me a used BOV...than if I do it I WILL videotape it and post the results just so that you people can have a good laugh:-D

cant wait to see what happens. :D

how does a bov know when to blow off. is there a switch or something?!?!

Most BOV's are activated by the air pressure in the intake pipe when the throttle is backed off (keeps the turbo cartridge from slowing down due to excessive intake pressure). MY question is, why is this even being discussed? I didn't think this thread would last this long... [sm=badidea.gif]

cause i want to see what happens. and to clear it up a little more, its the vacuum in the intake manifold that actuates a BOV, not the boost pressure in the actual intake tube, thats if its installed right. ive heard of people using a BOV on a homemade turbo system to regulate boost pressure.now thats a [sm=badidea.gif]

I don't understand how does vaccum actuate a "blow off" valve. it seems that it would activate when the pressure from the turbo has no where to go when you shift from high rpms, to low rpms the pressure is still there. therefore the bov allows pressure to escape without ruining the engine or any of the turbo components.

I think you're right, sacicons. I too find myself waiting for someone to actually do it. But about the whole BOV situation, I wanted to clear up the clear ups (Forced Induction 110, if you will).

Obviously, the turbo itself is a free spinning device. When you are under boost, then suddenly let off the accelerator (i.e. to shift or just to slow down), the throttle plate closes rather abruptly. Logically, the turbine continues to spin of its own accord, which builds up boost pressure in the charge pipe that has nowhere to go. Because of this, the turbo is essentially compressing air against its own speed, which causes turbulence as the air tries to exit around the spinning impeller blades, more commonly referred to as compressor surge. Not only does this cause unnecessary wear (and possibly damage) to the turbo cartridge and bearing, as well as slowing it down, but it kills your recovery time when reapplying boost.

The BOV itself is basically a pressure-activated piston valve that opens when a certain amount of pressure is applied to it from the inside. What the vacuum line does is help assist the opening of the blow off valve, since the vacuum applied from the top will help open the piston. Once you begin boosting again, however, the negative pressure (vacuum) becomes positive again, and this positive pressure is applied through the vacuum line to the top of the piston, helping to keep it sealed under acceleration. For example, if you are boosting at 10 psi, your blow off valve will have 10 psi pressing down on the top of the piston (via the vacuum line) along with a stiff spring to keep it sealed.

Hope that all makes sense... And I hope I didn't repeat too many things that were already said (sorry)

To answer your question, Super Mario, a BOV is activated by built up boost pressure, but it is assisted by vacuum.

yeah, ill go along with that. but it also kinda depends on how hard you have it set. (on adjustable ones)

Very true

and if it relyed on boost alone, it would still slow the turbo alot, cause it would have to be hard enough to hold 20+psi. but yeah, the boost pressure definately pushes on it too.

The reason why i asked this, is because I thought that you could possibly stick one on your exhaust manifold (or anywhere along the exaust line that pressure can be applied to it). The thinking that pressure building up on the bov would be provided by exhaust. therefore the pressure could be released when ther is enought pressure built up, or perhaps by a switch or something. but I see now how it works and that it couldn't. Just thinking about it thats all....

well, that could work, but BOVs arent made for that much heat (it can hit well over 1500*) and then when it opened, instead of a PPSSSHHHH, it would be a BRAP BRAP BRAP. it would be an exhaust leak, not a pressure relief.

You wouldnt have enough exhaust pressure to activate it.

The only way I see that working is if you superglue a potato into the exhaust pipe...OR! I've seen a Pathfinder with a whistle(!!!) exhaust tip...

SO gimme instructions guys. I got a BOV and I still have the Junky Mirage. We might get a couple of warm days over here if the forecast doesn't lie as usual...

ORIGINAL: Kolhoznik

SO gimme instructions guys. I got a BOV and I still have the Junky Mirage. We might get a couple of warm days over here if the forecast doesn't lie as usual...

Yay! He's actually gona do it. I dunno how to give u instructions for the install except for install it the normal way, just turn it upside down. If that doesnt work, be creative and make something up. Don't forget tons of pics/vids tho [sm=smiley20.gif].

I also have a spare full CO2 tank...I'm getting ideas..:-D

LMAO!!!
wow. ok, i'd say to drill a hole about the size of the outlet on the BOV into the IM, then find some way to mount it, then just connect the vacuum port on hte back of the BOV to a vacuum line on the car. i dont think its going to work though, because as soon as it opens, it will kill the vacuum and close it. but let us know. and im thinking the only way it might work is to rev it really high with the car moving and let off the gas really fast. but the car should be moving, anyone whos driven a turbo car with a BOV knows what i mean. it doesnt even work very well on a normal turbo car when its parked.

You could get an interfooler with a wizzer thingy on your tailpipe for that sound. It does sound like rice to me though. Theres an Integra rolling around St. Louis with that set up and all it does is get made fun of. But to each his own.

Well who cares about the sound...lets see if ANYTHING happens....too bad the weather is getting worse...

damn the bad weather. Keep us posted (no pun intended :D).

I NEED CLOSURE ON THIS THREAD.AAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHRRRRRRRRRGGG GGG!!!!!!!!!

any updates? I really wanna see what would happen.

an update is that I will probably have to use my civic for that...the mirage died...(I guess a fuel leak...flames and all)...but I'm getting a new manifold anyway...so when it gets warm I'll do it

jeez the mirage caught on fire? Thats really bad, especially if you were driving it when it happened.

I was starting it and flames just started to come out from under the hood...Probably a combination of leaky fuel rail and sparky distributor...

or just buy the throttle body spacer made by OBX get it off ebay you will like it sounds like a stock turbo spoil up with out the BOV, but if you dont want your friend making fun of you dont, they always like "a boy, YOU GOT A TURBO?? all loud and redneck like, its funny though, people think i got one all the time, but I defenitly do not. $50 ebay

yeah im sure they realize you have one of those fake ebay turbo sound maker thingys when they blaze you in their stock civics.

That is the dumbest idea i have ever heard sorry dude but just buy a turbo!

rice rice baby, dumb dumb dumb dumb dumb dumb dumb dumb (almost as bad as vanilla ice)

people, please read the post in its fullest

too late [&:]

ahahaha,if your gonna buy a blowoff valve without a turbo you should also pick up one of those "show" intercooler kits, just fake piping and some cage like intercooler thingy..hehe

[sm=closed.gif]

Please dont put a blow off valve without a turbo, enough said.

read the thread. its all in the name of fun, no one expects it to work well. if it works at all. its just out of curiosity at this point.

yeah i know i am craving one i can taste it god damnitttttttt

Actually there is a short ram intake that i saw that has an opening for a blow off valve. But there isn't a point of having one without a turbo.

yeah, we convinced the original poster of that, now we just want to know what would happen.

i doubt there is anyway to make it work, but i am real curious to see, where are you located, i wanna see in person. lol

philly man. We're about 6 hours apart

it would be worth the drive if it acctually worked

Which it probably won't.....you never know though.