Difference in supercharger BOV and Turbo BOV
#17
12-31-2006 | 12:54 AM
Originally Posted by Nismo G
so on the vortech system the BOV is working the same as on a turbo or is this with all supercharger systems? With the vortech kid does it still have that same "pshhh" sound or does it have a different noise? With the vortech being a centrifugal supercharger does it still have that same supercharging "winding" noise or does it have more of the characteristics of a turbo?
The vortech Bypass BOV is NOT like a normal BOV . Vortechs is open under vacuum venting the air the SC is blowing out .
#18
12-31-2006 | 03:24 AM
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I have the Procharger system with a HKS BOV and yes it sounds just like any other turbo BOV. Air relesaing is air releasing, period. There are differnet types of BOV that produce differernt sounds but a BOV on a turbo sounds just like a BOV on a SC. With a HKS, it was 3 chambers in it so it sounds different from a greddy bov which is actually a known as a "push type". The HKS is a more aggressive sound IMO and is usually found on supras. I can post a clip when I get back home of the two.
#20
12-31-2006 | 06:59 AM
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From: Downey
ok
the difference between the supercharger and the turbo is that.... the reason its a supercharger is because is uses a belt connection. But for superchargers there are different types.. there is the stillen plenum type.. or the others like the vortech. The vortech u can put a blow off because it uses a turbo type rotor thingy and yea.. so yea but no the stillen cuzz its liek a different kind of unit
the difference between the supercharger and the turbo is that.... the reason its a supercharger is because is uses a belt connection. But for superchargers there are different types.. there is the stillen plenum type.. or the others like the vortech. The vortech u can put a blow off because it uses a turbo type rotor thingy and yea.. so yea but no the stillen cuzz its liek a different kind of unit
#22
12-31-2006 | 10:05 AM
A Bypass BOV works exactly as I described in earlier post .
A Normal BOV is normally on the intake tube right before the throttle body . So when you shift or are at light throttle , boost builds up behind the throttle body and opens the BOV to release the preasure at a set psi .
The reason Vortech uses a Bypass BOV , is to retain drivability and mpg under normal every day driving . If it used a normal BOV [ only openning when a set psi is reached ] All the extra air and preasure would be forced into
the plenum under idle and light throttle and the cars ECU would kinda freak out and start pouring gas into the cyl. to make up for it . Which results in bad drivability and bad MPG .
A Normal BOV is normally on the intake tube right before the throttle body . So when you shift or are at light throttle , boost builds up behind the throttle body and opens the BOV to release the preasure at a set psi .
The reason Vortech uses a Bypass BOV , is to retain drivability and mpg under normal every day driving . If it used a normal BOV [ only openning when a set psi is reached ] All the extra air and preasure would be forced into
the plenum under idle and light throttle and the cars ECU would kinda freak out and start pouring gas into the cyl. to make up for it . Which results in bad drivability and bad MPG .
#23
12-31-2006 | 10:07 AM
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Joined: Dec 2006
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From: MS Gulf Coast
Supercharging actually applies to turbo and blowers.
Supercharging - The act of forcing air into the engine/cylinders.
The term Supercharger is just normally used when speaking of a blower nowadays.
The Turbocharger is just a exhaust driven air compressor.
Blower is mechanically driven, typically either by gears or belts and consist of three different types twin screw, roots and centrifugal.
Like when people call the engine a motor and motor an engine.
Motor is electric powered.
Engine is some type of combustion powered whether it be internal or external.
Oh yeah this is a bypass valve thread...LOL
Supercharging - The act of forcing air into the engine/cylinders.
The term Supercharger is just normally used when speaking of a blower nowadays.
The Turbocharger is just a exhaust driven air compressor.
Blower is mechanically driven, typically either by gears or belts and consist of three different types twin screw, roots and centrifugal.
Like when people call the engine a motor and motor an engine.
Motor is electric powered.
Engine is some type of combustion powered whether it be internal or external.
Oh yeah this is a bypass valve thread...LOL
#24
12-31-2006 | 11:32 AM
Originally Posted by Turbo nasty
Supercharging actually applies to turbo and blowers.
Supercharging - The act of forcing air into the engine/cylinders.
The term Supercharger is just normally used when speaking of a blower nowadays.
The Turbocharger is just a exhaust driven air compressor.
Blower is mechanically driven, typically either by gears or belts and consist of three different types twin screw, roots and centrifugal.
Like when people call the engine a motor and motor an engine.
Motor is electric powered.
Engine is some type of combustion powered whether it be internal or external.
Oh yeah this is a bypass valve thread...LOL
Supercharging - The act of forcing air into the engine/cylinders.
The term Supercharger is just normally used when speaking of a blower nowadays.
The Turbocharger is just a exhaust driven air compressor.
Blower is mechanically driven, typically either by gears or belts and consist of three different types twin screw, roots and centrifugal.
Like when people call the engine a motor and motor an engine.
Motor is electric powered.
Engine is some type of combustion powered whether it be internal or external.
Oh yeah this is a bypass valve thread...LOL
Geeee Thanks !!!!!
Are you just posting to let every one know how much you know ????
#26
12-31-2006 | 11:58 AM
Originally Posted by Nismo G
Booger...HAHA calm down man, you have posted the same thing like 4 times everyone on here can read...atleast i think they can. Now you post that...? Common
Seemed like people were confused on it and I just was trying explain it better .
TurboNasty had the difference between the two wrong and then decided to explain an engine to us basicly trying be a smart *** . Him ..with his 15 post count ?????? we dont know him from squat
#27
12-31-2006 | 12:04 PM
Joined: Aug 2006
Posts: 7,244
Likes: 23
From: Austin, Texas
Originally Posted by booger
Seemed like people were confused on it and I just was trying explain it better .
TurboNasty had the difference between the two wrong and then decided to explain an engine to us basicly trying be a smart *** . Him ..with his 15 post count ?????? we dont know him from squat
TurboNasty had the difference between the two wrong and then decided to explain an engine to us basicly trying be a smart *** . Him ..with his 15 post count ?????? we dont know him from squat
I didnt see that he only had 15 post. Thanks for pointing that out, not saying that he isnt car smart...but id rather take the word of someone who has been around for a while.
#28
12-31-2006 | 12:15 PM
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Joined: May 2006
Posts: 1,885
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From: Gaithersburg
Originally Posted by Neal376
stillen is a roots "blower" supercharger...it blows air -
vortech and HKS is a centrifugal - its just like a turbo - air is under heavy pressure and BOV is used
vortech and HKS is a centrifugal - its just like a turbo - air is under heavy pressure and BOV is used
#29
12-31-2006 | 01:23 PM
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Posts: n/a
But the roots [like Stillen] sit ontop of the engine- blowing air straight into it [not through the throttle body]. They produce positive pressure by 'stacking air' through several blades that are controlled by the main belt on the front. That and engine RPM are directly related.
With the centrifical type the compressor is spinning much faster [40,000 - 60,000 RPM] due to a ratio gear found in the compressor housing [kind of like rearend gears or tranny gears - 1 speed] air is being forced past the throttle body and if the TB snaps shut - even though the engine is slowing down the supercharger is still spinning and creating airflow at 20,000RPM. If that air is not expelled from the intake pipe it can bend the throttle body and cause damage to other parts.
A turbo can spin much faster then a supercharger [and alot faster then a roots style SC] sometimes up to 100,000RPMs. Thats alot more flow then the centrifical superchargers, but the BOV still serves the same purpose.
Different companies make different BOVs. With that comes different noises. The classic *Psssshhhh* or short *Chirp!* some flutter, others are smooth. It all depends on how the company sets up the BOV.
With the centrifical type the compressor is spinning much faster [40,000 - 60,000 RPM] due to a ratio gear found in the compressor housing [kind of like rearend gears or tranny gears - 1 speed] air is being forced past the throttle body and if the TB snaps shut - even though the engine is slowing down the supercharger is still spinning and creating airflow at 20,000RPM. If that air is not expelled from the intake pipe it can bend the throttle body and cause damage to other parts.
A turbo can spin much faster then a supercharger [and alot faster then a roots style SC] sometimes up to 100,000RPMs. Thats alot more flow then the centrifical superchargers, but the BOV still serves the same purpose.
Different companies make different BOVs. With that comes different noises. The classic *Psssshhhh* or short *Chirp!* some flutter, others are smooth. It all depends on how the company sets up the BOV.
#30
12-31-2006 | 01:41 PM
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Joined: Sep 2006
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Originally Posted by HomieG35
But the roots [like Stillen] sit ontop of the engine- blowing air straight into it [not through the throttle body]. They produce positive pressure by 'stacking air' through several blades that are controlled by the main belt on the front. That and engine RPM are directly related.
With the centrifical type the compressor is spinning much faster [40,000 - 60,000 RPM] due to a ratio gear found in the compressor housing [kind of like rearend gears or tranny gears - 1 speed] air is being forced past the throttle body and if the TB snaps shut - even though the engine is slowing down the supercharger is still spinning and creating airflow at 20,000RPM. If that air is not expelled from the intake pipe it can bend the throttle body and cause damage to other parts.
A turbo can spin much faster then a supercharger [and alot faster then a roots style SC] sometimes up to 100,000RPMs. Thats alot more flow then the centrifical superchargers, but the BOV still serves the same purpose.
Different companies make different BOVs. With that comes different noises. The classic *Psssshhhh* or short *Chirp!* some flutter, others are smooth. It all depends on how the company sets up the BOV.
With the centrifical type the compressor is spinning much faster [40,000 - 60,000 RPM] due to a ratio gear found in the compressor housing [kind of like rearend gears or tranny gears - 1 speed] air is being forced past the throttle body and if the TB snaps shut - even though the engine is slowing down the supercharger is still spinning and creating airflow at 20,000RPM. If that air is not expelled from the intake pipe it can bend the throttle body and cause damage to other parts.
A turbo can spin much faster then a supercharger [and alot faster then a roots style SC] sometimes up to 100,000RPMs. Thats alot more flow then the centrifical superchargers, but the BOV still serves the same purpose.
Different companies make different BOVs. With that comes different noises. The classic *Psssshhhh* or short *Chirp!* some flutter, others are smooth. It all depends on how the company sets up the BOV.