What BOV do you use ? ( blow of valve )

[venomous]

What blow of valve do you guys use on your supercharger / turbo setup?

Once i get my charger on i dont want to do anything with it unless i get a BOV because i read in a few places about pipes getting blown of and the reason being the user didnt have a bov.

i dont want to use the 20$ bosch one, so wich one can you reccomend ?? ( this is gonna be for a CRS style setup )

[HoZy]

depends what type of supercharger setup your doing, if you want a BOV to work properly you need to move the throttle body pre supercharger to have a properly venting BOV.

Cheers
MaT

[venomous]

yeah like i said im doing a CRS style setup and moving the throttle body, so what would be a good blow of valve for this, as in brand wise / size ?

[greenfoam]

If you move the throttle body infront of the charger then you wont need the BOV

[venomous]

but can i still use one ? i dont want it venting through the pod.

[CSL]

carn dude, you just want the sound, and so do i
i'm gunna use one of those low psi plumb bak/ vent to the atomosphere units, or just a plumb back.

you'll find a heap on ebay cheap generic brands, just make sure it's low psi and adjustable, cause 3 psi is really low

[venomous]

its not all about the sound, ive just seen alot of threads on other forums about plenums blowing of and pipes splitting, im on a budget hence the reason im doing a cheap 1ggze charger style setup, i cant afford to be replacing my engine, charger, and piping all the time lol.

[venomous]

PIC # 1
hey also, i drew a pic on how i THINK its meant to be setup, But for the first picture, wont you still need a BOV between the engine and the super charger?

Of you dont have one wont it just throw the excess air pressure into the engine and stuff something up?

PIC # 2

For this setup, where would the BOV be ? inbetween the charger and the T/B? or inbetween the T/B and the Engine ?

[greenfoam]

Picture 1 doesn't need a BOV, no air can get past the throttle body so no air will be compressed so you don't need one, it's just like a retro SC setup on a old big block street machine . In picture 2 you have it between the throttle body and the SC so that when you close the throttle and the SC is still boosting the air pressure can escape somewhere

[venomous]

sweet thanks for clearing it up for me hehe

[RVN 355]

go for apexi,turbosmart or the well know brands. I don't know lots on supercharged setups for the best advice speak to capa i suggest.

[VLDavo]

if its a crs style kit i woudlnt even bother with a bov ......and ud be a very unlucky person to blow pipes on the low sort of pressure they push out. and i dought the pressure would will damages the charger on the blow back

but if your got ya heart set on it jus buy a small turbosmart one they do the job jus place it in between the charger and throttle body where the pressure builds

[venomous]

yeah ive heard alot of people say a bov is not needed, but ive heard more say that it is needed.

3psi, is still alot of air pressure. even just turning the charger by hand is pretty damn strong, ide bet my money that anyone who runs this setup for a long time without a blow of valve will be very very sorry

[VLDavo]

yeah ive heard alot of people say a bov is not needed, but ive heard more say that it is needed.

3psi, is still alot of air pressure. even just turning the charger by hand is pretty damn strong, ide bet my money that anyone who runs this setup for a long time without a blow of valve will be very very sorry

thats if u get a long time out of this setup.....the lil chargers were desgned for small capcity 4 cylinder engines.....the 3.8 liter is near double the size the charger was orignaly on.....and quite frankly the engine swallows more air and the charger has to work overtime to keep the pressure up......3 psi is not much at all....

[greenfoam]

But you can still get an easy 150 rwkw out of them at 6 PSI which is pretty good for the price !: ) even if you have to replace them every few years

[venomous]

lol true, i already have 2 of em :d

[VLDavo]

But you can still get an easy 150 rwkw out of them at 6 PSI which is pretty good for the price !: ) even if you have to replace them every few years

show me one that constantly produces 6psi on full throttle

[PaRaDoX]

oooo ooo i know... get one that goes PPPSSSST WHOOOOSHHH -PST-PST-PST.... or get your mates to hang out the windows attempting to make those noises.. =D

how much do the CRS systems cost? (any other modifications that would need to be made?) also whats the max PSI they can be run at on a standard head / cooling system before becoming unstable? isnt it like 9-10psi??

how much could i expect to pay for a 9psi~ system? (pulley+charger included)

[VLDavo]

oooo ooo i know... get one that goes PPPSSSST WHOOOOSHHH -PST-PST-PST.... or get your mates to hang out the windows attempting to make those noises.. =D

how much do the CRS systems cost? (any other modifications that would need to be made?) also whats the max PSI they can be run at on a standard head / cooling system before becoming unstable? isnt it like 9-10psi??

how much could i expect to pay for a 9psi~ system? (pulley+charger included)

9 psi is not gonna happen .........maybe for a day or 2 but it will die in no time flat............they were off small 4 cylinder engines they are not desined to flow so much pressure. on an engine double the capacity it was originaly on

crs kits are 1500 - 2000

i would rather spend my money on something else

[greenfoam]

show me one that constantly produces 6psi on full throttle

vp_lukes holds 6 psi 5000 rpm, infact the boost is fairly steady from low revs right through to the redline, there are plenty of dyno sheets on the forums from guy with toyota chargers with boost plotted on them and the boost is very steady on all of them.

I'm going to have a rest from forum posting now, 2000 posts are taking too long to reach and I've got to concentrate on fixing my car for a while, I've downloaded all the messages of the guys I've got to make eproms for so I'll do that . I'll make myself a deal to come back when my car pulls a 14.4 on my Gtech, but I doubt it will do that without an exhaust so it may be a while

[njnathan]

Easiest custom setup, is to get a off the shelf monza BOV, get an exhaust shop to tap the fitting into your intake manifold between the supercharger outlet, and the throttle body. Tap a hole into the front of the inlet manifold to be able to get vacuum connect for BOV. EASY JOB. Remember the Crack case vent pipe needs to be replumbed to in the induction side of the supercharger. Otherwisw you will blow bubbles in your oil and pressurise your crackcase with boost.
Have done it easily with no real problems. Just rememebr to check crackcase pressure!

[Pub247]

Nice dig mate and ill have a dig at everyone bov arent made for PD superchargers bypass valves are. I keep telling people but nobody listens. you'll never, ever, get the best economy or drivability out it when using a BOV instead