I know superchargers have BPV's, but is a BOV an option? I was told yes and no. I'm sure this question has been asked, but i haven't seen any threads. Has anyone here done it? And if so, is there a DIY on this, and what brand/style.

 

No, Cannot be done, its also not needed as you do not have to fight compressor surge.

 

I know its not needed, hence the BPV, but I've seen superchargers with Blow-off valves. I just feel like, if the BOV was placed before the BPV, then it would still work. If you snap the throttle shut, there is still air that forces back, but its released through the BPV. Right?

 

Out of curiosity, are you looking into this change? And if so, is it performance related, or simply for the sound?

 

Actually, no there's not, because of the direct drive of the belt, the S/C stops forcing boost as soon as you pull back on the throttle.

 

You're on quite the forum run this morning. In one of those "dropping knowledge" moods huh?

 

Nope, Bored...

 

exactly WHY a SC does not have one....(blow off valve)
The purpose of the bypass valve to to vent the SC to atmosphere at LOW engine rpms, low loads when boost is not needed, thereby increasing MPG by further reducing engine load.....simply put...you do not need to be compressing air when the motor is idling..so the bypass valve is installed.

I exchange for not having the annoying PSSssshhhhTTTTT sound, you get the intoxicating whirrr of the SC when you got on the pedal....better in the car...unless you are trying to show off.....

 

If you check Wikipedia or something, there is nice animations and videos about it. It explains the physics behind it.

It can be done, but won't help. The BPV keeps your boost completely internal, so if you go on/off/on throttle, there is no need to rebuild the pressure. It's actually better that way. Turbos have internal BOVs, such as the R56 even.

Only on turbos does it make a difference, and really, it's more to "tune" the turbo for more boost, as it's often difficult to adjust and internal BOV in a turbo.

 

Besides,

WHINE is better than WOOSH!

(I need to make that into a grill badge)

 

really? hmm

 

and a diverter valve works the same way as a bpv.

 

A centripetal supercharger is worlds different that the roots blower on a MINI. The centripetal supercharger
is more like a belt driven turbo and has no provision for a bypass valve there fore to prevent boosting issues it has to use a blow-off or recirculating valve

Blow-off valve on a supercharged R53... still a ricer idea.

 

We tried....
The op is deadset on getting a specfic sound to blend into the ricer crowds by the sound of it....guess he bought the wrong car, and is willing to spend hours and $$$ to get the pssttt sound....maybe he should just get a few cans of baked beans.....

 

Maybe OP can just throw a turbo on there and fulfill all his noise making needs.

 

get one of these!!!! lmao!!

http://www.ebay.com/itm/New-Car-Exha...734557&vxp=mtr

 

THE WHISTLE GOES WOOOOOOOOOOO

 

or, get a "full system" lol...

 

ddc42ddca9ddca8

Supposed to be an ear, poop, and poof emoticons. Aka Sounds like a wet fart.

 

Alright, obviously people didn't want to help. Professor, thanks for the info. Didn't know that, but that's why most of us are here, to learn something. As far as the blow-off valve goes, sound was one of the reasons, but from what i read, some s/c (obviously not ours) don't hold a constant boost level with a stock by-pass valve. Since I upped the boost, I thought it would be something to look into.

I should've known I was going to get thrashed for posting this, I thought Mini Owners we classy, decent, people. When in fact, the ones doing the thrashing about being a ricer, etc....THAT'S HOW RICERS ACT!

 

just relax man. were just busting your ***** a little eh.

to be honest, i wouldnt mind a BOV sound myself, even considered this "conversion" for it. but again, after reading into the physics of it, the BOV just wont work. also, the computer will pitch a fit, throwing you an "unmetered air after SC" code (forget the #s, 1498 or something). that means, the engine sees air leaving the system. happens to me when my OCC o-ring starts to go out; air is leaking out of the OCC.

now, thats just at the top of the engine, in that little line, just a little bit of air. imagine several Cubic Feet leaving the system in a rush. the computer would lose it!

also, the BPV regulates the air flow into the engine, so it may only be half open at times to obtain the correct A/F ratio. this may be quite difficult to do in a BOV type setting, as those generally are either full open or closed (i believe, if im wrong please someone correct me).

really, your only real option is either full turbo convert, or Twin Charge!

 

If you want to make sure you're getting all the boost your SC is making...look into the DT BPV its got a stronger spring and is able to fully close (some of the earlier BPVs would not fully close).

 

thanks submitaweasel. I was looking in to them already, just wanted to see wat options i had. check the sig. lol

 

Haha my bad I'm on the app it doesn't show sigs just had to open the browser to see. Thats the best product I know of for these cars...

 

hi, does anyone know the dimensions of the hose connecting the bpv and the compressor Intake duct?its no 16 on this photo
http://realoem.com/bmw/showparts.do?...&fg=05&lang=en
its for manual transmission.
Because it has gotten really stiff over time and while installing the DT bpv I had to force it way to much.The problem is that I had to put it together and forgot to measure it. I was thinking of putting a silicone one.