Fitting a Greddy Blow Off Valve vs Procharger Bypass Valve
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Fitting a blow off valve in place of a bypass valve on a blow-thru supercharged vehicle. Vehicle is a ’79 International Scout II with 345 (5.6L) V8 converted to MPFI & Supercharged
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@WorkoutModerator – Wow, 5 more comments from you, what a surprise. Best you run along now and stop watching videos that make you act like a bitch.
@michael174 real world?
Apparently more than you…
Hey tUBERS… Let me HACK my way to convince you a BOV is the same as a Bypass… even though I have Zero knowledge of either.
Perhaps try preaching your pathetic theory to a decent forum and prepare for laughter.
No matter your metal skill.. its a waste when you dont know the basics of what you are doing and accomplishing.
Delete if you wish… but I know someone is out there preaching shit.
You should name your vid.
Blow off vs Bypass = same… Im stupid and dont know the difference.
@michael174 – You can Post what ever you want…
Its clear you dont know what your talking about though. End of story… and your refusal to Open a FN book or CALL or LOOK at the mechanics is your ignorance, post way, but to claim they are same and have NO backing because they are Not makes you look quite stupid.
Real world? Son… i tune and build High Performance cars all day, every day… and guess what? I know the difference between a Bypass valve and a BOV for a turbo… not the same.
@michael174 – wow did you even read what I wrote?
Fuck your stupid. A BYPASS IS OPEN when Idle and light throttle.. A BOV is NOT.
BIG difference, no matter WHAT Spring you put in.
its NOT marketing, its not hype.. its REALITY on WHY THERE ARE TWP types…
Retards like you keep the INCORRECT information flowing.. GOOD JOB.
@WorkoutModerator – And by the way, I suggest you get out in the real world and try experimenting with your own theories before telling me what I can and cannot post on youtube. You want to quote text-book theory and marketing hype verbatim? Fine. But don’t tell me what I should and shouldn’t post on youtube.
@WorkoutModerator BOV and bypass are simple valves operated by a vacuum actuator. BOV just uses higher spring pressure to keep the valve closed at idle and partial throttle. I decrease the spring pressure for s/c application so that it keeps the valve open at idle and part throttle, low load (vacuum). Then when vacuum starts to drop (load), the valve closes and the whole system fills with positive pressure boost. I can setup a bypass to perform the same as a BOV by increasing spring pressure.
Nice fab work though…
feel free to call a company such as ATI (procharger) and talk about the differences of a BOV for turbo vs a bypass valve – which can be to open air… usually mis-labelled as a BOV.
As you can see, the actual workings of the TWO different types are quite different yet serve a similar purpose. There are reasons why they work differently and that is due to how superchargers (belt driven) differ from Turbo (gas driven).
A blowoff valve is used in turbo applications only opens at throttle lift off (after boost has been produced). It is closed at part throttle cruising and WOT. A turbo system does not generate boost at part throttle cruising therefore an open bypass valve could possibly ingest ambient (unfiltered) air under cruise conditions.
The bypass is operated by a vacuum actuator control unit that is normally closed. When vacuum is high (idle-cruising) the actuator opens the bypass valve, equalizing the vacuum pressure throughout the system. When boost is required (accelerating) the vacuum is decreased and the bypass valve instantly closes, causing pressure to increase into the cylinders. This equalized vacuum condition virtually eliminates the normal parasitic power loss of a forced induction system.
i do think THINK you cant do that.. YOU SHOULD NOT DO THAT.. and ill tell you why in a minute…and they are NOT the same… you need to do some research before you assume and post crap on the internet…
you beg to differ? based on what? just because you say so? lol.
Your education for the day sir:
Excellent write up. Very high quality work.. AAA+++
dude i give u super props. sweet ass routing and fab work. did u make your own intacooler.
dude, your a fuckin geneious!!!
The plumb back was turned and thread-cut on a regular medium size lathe by a friend of mine. He did a sweet job!
Thats some nice fabrication work. Did you turn the plumb back your self? If so what type of lathe do you use.