kjai

hi everyone I just search on youtube there is a c32 video with blow off value sound...just wondering can c32 add bov...as i know is for turbo car only...thankyou for answering...

the link is(the sound start at 2:00)...http://www.youtube.com/watch?v=ZhaHCNoN_9I

but i think is not a c32...only display to 260km...

l3iGD

How bout a LS1 swap??

FrankW

Nos!!

TemjinX2

you answered your own question, with your question.

crazeazn

while i do not know the intricacies of the c32, i know some aftermarket supercharged cars that have blow off valves.

bumpnzx3

you spelled it wrong. according to the pronunciation in The Gay and the Curious (Fast and Furious)- it's spelled Nawz

Corrosive

I have never heard of a supercharged car ever having a BOV. Are you sure you didnt just hear the loud supercharger whine? There are fake BOV sound machines out there for posers... but I doubt a C32 owner would be so dumb as to do that.

Mind putting out a link of the video?

MRAMG1

The better question is WHY

Blowers DO NOT NEED this valve, as the boost is directly porportinal to the blower size/rpm. Turbos use this to PREVENT overboost, this CAN'T happen on our cars since the blower is sized properly to limit the boost across the rpm range, ie constant boost pressure from 2000-6000. I guess if you were trying to be a poser you could add one to be a teenager again, but again, WHY

See yeah

crazeazn

many of the lexus IS300 aftermarket supercharger applications had blow off valves (prolex, tbko, toyomoto, lms etc); i've yet to see a stock application that has it.

red97z

On my supercharged 97' LT4 camaro, I have a Bypass valve. It's made by vortech. However, my blower is a centrifugal unit, not a roots style one, or whatever you would call the one the c32 has..

MRAMG1

A bypass valve, is just that, it diverts the boost when you close the throttle from 6000rpm away from the throttle body, and back to the compressor. A blow off valve, is set to prevent the boost from ever going past its pre-set value. Ie Indy cars are given a blow off valve when they compete from the officials so that they can't cheat, ie run more boost.

Also, keep in mind that centrifiguls build boost with RPM, the faster you spin them, the more boost you get. 2000 rpm =2 pounds, 3000 rpm= 4 pounds, etc, etc. Yes it does vary from blower to blower. This is just an example, so yours may be different.

Large blowers do have a blow off valve built into them, example a Weiand 6-71. This valve IS NOT for over boost, it is designed as a safety valve in the event of a back fire in the engine so that it does not damage the blower.

See yeah

AWDman

after a very heavy meal of black beans and rice i too, feel like i need a blow off valve.

neihouma

Turbo application uses internal / external wastegates to prevent overboost.

Blow off valves (atmospherically dumped) / Bypass valves (rerouting back
to the source) recycles the kompressed air to the inlet of the charger
instead of outlet, which causes anti-surge ie: damaging the s/c or turbo.

MRAMG1

+1

See yeah

But they do use blow off valves in racing on turbos to also prevent cheating, ie boosting past the regs

1qikctr

Turbo application uses internal / external wastegates to prevent overboost.

Blow off valves (atmospherically dumped) / Bypass valves (rerouting back
to the source) recycles the kompressed air to the inlet of the charger
instead of outlet, which causes anti-surge ie: damaging the s/c or turbo.

* BINGO* another type of supercharger functions with a BOV is VORTEC system.

FrankW

racing regulation FTL!

gives the team with more money and more engineering resource an advantage. therefore A1GP is most exciting to watch right now other than my favorite WRC. lol

neihouma

That sound was "added" into the video

This is a MORE realistic BOV on a C32 AMG (which I'm still trying to figure
out how he did it, yes he's a member here)

http://www.youtube.com/watch?v=ROtgZfeDZNs

crazeazn

that looks lieka c55?

JDC55

Blow off valves are not use to regulate boost a wastegate is.

crazeazn

BOV just releases excess throttle pressure? wastegate releases boost via wastegate spring or boost controller, anything more will not hold and it will dump

MRAMG1

On a street car yes, and YES a wastegate is used to control boost. However CHAMP car racing uses a Blow off valve that is given to them PRIOR to the race by an official to prevent ANY team from trying to run MORE boost than the rules allow. So, the BLOW off valve , in this case DOES control/limit boost.

See yeah

Guys, I AGREE with you here, I am just stating one uniquie point of use, please don't beat me up on this. I helped out the Andreties in 92-95 at the Cleavland Grad Prix, NO I was NOT part of their team, I just met Michael at the Hotel and bought him some drinks, and he let me in his pits for a couple of years, LONG story.

JDC55

Your thinking of a POP OFF VALVE not a Blow off Valve.A pop off valve opens when the set pressure is exceeded in the manifold. A blow off valve is a vacuum-actuated valve designed to release pressure in the intake system of a turbocharged or centrifugally supercharged car when the throttle is lifted or closed.

cnchung

I think the sound was "added" too. The sound of a C32 does not sound like it is in the vid. The car did not accelerate the way it should after reving it for a few gears.

The vid you suggested sounds more like a BOV. Personally I don't know how a BOV should work properly with a supercharger. Isn't the SC clutch is already doing this job?

With a nice pulley, the car already sound awesome. What more do we need?

crazeazn

for the second time isnt that C55?

edit: maybe a ricer?

MRAMG1

OPPS, me bad, yes you are right my friend

Forgive me, I only have used and LOVE Positive displacement superchargers, ie BOTTOM END TORQUE.

SORRY

See yeah