HELP! Looking for a BOV, which one for this car?
Thread Starter
TECH Senior Member
iTrader: (2)
Joined: Nov 2001
Posts: 9,971
Likes: 2
From: Tampa Bay
HELP! Looking for a BOV, which one for this car? (or bypass valve, whatever you want to call it) the car is in the sig link. it is the 1995 LT1 383" je/lunatti combo 8.9/1 compression @14 psi s-trim (still lots of cfm though), canfield headed, cam motion camed, all bolton, etc etc car. need to take this stock BOV off and looking for an aftermarket one. the blower is Vortech S-trim again and we are running the reg 5-6 psi unit! it pops of one of the rubber reliefs off the Throttle Body right now so i know this stock unit isnt cutting it. i am sure Vortech sells something but i just wanted your opinion, i am looking to buy very soon. TIA!
TECH Senior Member
Joined: Nov 2001
Posts: 11,603
Likes: 0
From: Chi-Town, IL
Re: HELP! Looking for a BOV, which one for this car? Get the Vortech Mondo Bypass valve, or you can use the ATI race ready, both are very good...
PSJ has the Vortech one on his setup..
I'm using the ATI race ready...
PSJ has the Vortech one on his setup..
I'm using the ATI race ready...
Thread Starter
TECH Senior Member
iTrader: (2)
Joined: Nov 2001
Posts: 9,971
Likes: 2
From: Tampa Bay
Re: HELP! Looking for a BOV, which one for this car? ok, well i just talked to a tech at vortech to ask his opinion after i posted this. he said the mondo is for cars over 20 psi and the regular race ready maxflow unit
http://www.superchargersonline.com/p...ber=V8D204-001
is the one i want. i am still looking around. i cant seem to find the ATI unit on the net. anyone know?
one more thing, the tech said not to release the pressure into atmosphere as it will mess up the MAF reading and to return to the system. what do you all think? we all love the sound of the valve opening up!
http://www.superchargersonline.com/p...ber=V8D204-001
is the one i want. i am still looking around. i cant seem to find the ATI unit on the net. anyone know?
one more thing, the tech said not to release the pressure into atmosphere as it will mess up the MAF reading and to return to the system. what do you all think? we all love the sound of the valve opening up!
TECH Fanatic
Joined: Nov 2001
Posts: 1,055
Likes: 0
From: Chi-Town
Re: HELP! Looking for a BOV, which one for this car? ok, first with a blower car all you really need is a BYPASS VALVE.....but you can use a BLOWOFF VALVE as well
they have 2 different purposes.
A bypass valve operates with both vacuum and pressure. It will stay open and "bypass" air under vacuum and it will close under pressure to prevent boost from escaping. This is the important one out of the two.
A blow off valve usually just operates under pressure, not vacuum. It has a spring in it that is set to "blow off" at a certain PSI level. Usually this is put on a car to alleviate the excess pressure in the intake tract when slamming the throttle shut after a lot of boost
that vortech valve should work fine for you
they have 2 different purposes.
A bypass valve operates with both vacuum and pressure. It will stay open and "bypass" air under vacuum and it will close under pressure to prevent boost from escaping. This is the important one out of the two.
A blow off valve usually just operates under pressure, not vacuum. It has a spring in it that is set to "blow off" at a certain PSI level. Usually this is put on a car to alleviate the excess pressure in the intake tract when slamming the throttle shut after a lot of boost
that vortech valve should work fine for you
Thread Starter
TECH Senior Member
iTrader: (2)
Joined: Nov 2001
Posts: 9,971
Likes: 2
From: Tampa Bay
Re: HELP! Looking for a BOV, which one for this car? ok i was getting things confused. maybe i have been thinking of the duramax too much and its BOV? lol. ok yea i was looking at that vortech unit. is there anything better like the ATI version? and does anyone know about this releasing into the atmosphere deal or dont release teh pressure out?
Trending Topics
TECH Fanatic
Joined: Nov 2001
Posts: 1,055
Likes: 0
From: Chi-Town
Re: HELP! Looking for a BOV, which one for this car? if your system is a blow thru meaning the MAF is after the bypass valve then yes you can vent it
if the MAF is before the bypass valve you have to route the vented air back before the MAF so that it reads the air again
if the MAF is before the bypass valve you have to route the vented air back before the MAF so that it reads the air again
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
12 Second Truck Club
Joined: Oct 2002
Posts: 1,678
Likes: 0
From: Salt Lake City, Utah
Re: HELP! Looking for a BOV, which one for this car? Yes, after the MAF reads the air, you cant do anything with it. Before the MAF reads it though, you can do anything you want with it.
Have you looked at TURBOXS? They have a nice race bov that i'm using with my ATI that uses vaccuum to keep it open during idle, and spring pressure and boost to keep it closed during boost. It works perfect for a supercharger setup.
They also have one with a horn to make it louder if you are able to release to the atmosphere.
Have you looked at TURBOXS? They have a nice race bov that i'm using with my ATI that uses vaccuum to keep it open during idle, and spring pressure and boost to keep it closed during boost. It works perfect for a supercharger setup.
They also have one with a horn to make it louder if you are able to release to the atmosphere.
TECH Apprentice
Joined: May 2002
Posts: 383
Likes: 0
From: Jacksonville
Re: HELP! Looking for a BOV, which one for this car? I'm using an Apexi BOV
http://community.webshots.com/photo/...87214017ObhPcs
Mine vents metered Air and hasn't hurt a thing.. It's a bit rich between shifts for only a moment but this is something you'd probably only see show up on Autotap because you wouldn't ever notice otherwise. Car runs great..
The BOV Uses both Boost & Vacuum to operate. It doesn't just blow off when you reach a specific PSI. I'm not sure any of them do. You tighten down the adjustment set screw which basically controls when it blows off only when you go to vacuum, the vacuum basically acts like a trigger. Right now I have mine set to blow off or VENT at 3000 RPM's or Higher when Im in a Vacuum. Meaning as long as i'm operating in a vacuum and the RPM's are @ 3k or higher it will vent. If you floor it and immediately jump into a Boost condition the BOV Closes.. Hope that makes sense..
Sounds pretty Intimidating when I shift in the High RPM's too!.
http://community.webshots.com/photo/...87214017ObhPcs
Mine vents metered Air and hasn't hurt a thing.. It's a bit rich between shifts for only a moment but this is something you'd probably only see show up on Autotap because you wouldn't ever notice otherwise. Car runs great..
The BOV Uses both Boost & Vacuum to operate. It doesn't just blow off when you reach a specific PSI. I'm not sure any of them do. You tighten down the adjustment set screw which basically controls when it blows off only when you go to vacuum, the vacuum basically acts like a trigger. Right now I have mine set to blow off or VENT at 3000 RPM's or Higher when Im in a Vacuum. Meaning as long as i'm operating in a vacuum and the RPM's are @ 3k or higher it will vent. If you floor it and immediately jump into a Boost condition the BOV Closes.. Hope that makes sense..
Sounds pretty Intimidating when I shift in the High RPM's too!.
