Richard keep up the great work Buddy thanks for explaining things you are my go-to guy 351 Cleveland in a 1970 Mach 1 shaker had it since 1980 you can see it on woodson road rally video sincerely DT
I've blocked off of blow-off valves on 2 centri blower set-ups looking for boost leaks, boost loss. It had no effect other than no ricer noises when letting off the throttle, but this was on low boost. Not creating heat while out of boost is the benefit I can see with a functioning bypass valve.
ANY ideas on this? I bought a M90 Eaton TRD supercharger for my 4.7L v8 and noticed the bypass valve was removed and welded the butterfly valve in a slightly cracked open positive so not to make boost at idle. Anyone see problems with this? My guess is to have instant throttle response but will have less total boost pressure? My purpose is to make more low end torque at low rpms to pull a trailer up mountains. Should I cut the weld and go back to a vacuum bypass valve...which way is better?
Can you have a blow off valve set improperly I just installed one on my vortech and don't know exactly how to set the adjustment screw does the amount of boost matter are cam size
100% off topic can I ask a favor when you test the 292? Can you either do heat gun readings off the block front to back or if there's one available do some FLIR images? Was listening to this video and the discussion on the thermal distribution of the 4.0L Jeep engines is interesting. There's about an hour of listening there and it's pretty interesting stuff to pay attention to. th-cam.com/video/Rr53-kp4Kmo/w-d-xo.html
Richard, you answered the way Sloppy Mechanics Matt warns boomers do. Does a turbo LS need a BOV? "I've done lots of testing, I've done this 30 yrs, always run a BOV, closing the throttle tires to reverse the wheel durection..." Where's the transparent Richard answer? What did you test? What were the results? Did you measure the compressor reversing direction? What goes wrong when you didn't use one on a turbo? Robert at Forced Performance said in his experience it wears out the thrust bearing in the turbo he thinks. Show us what you've learned, man! Still love what I've learned on your channel, but I've never seen a real answer on this topic, it's always skipping the why and examples and straight to "always run one" or "they're more points of failure and don't do anything but sound better".
I agree with Robert that it decreases turbo life and can (as previously stated) damage the turbo. I'm not sure what you are asking for in the way of a transparent answer-the discussion given was already that.
@@richardholdener1727 Thanks for still reading comments after blowing up in TH-cam popularity. What I mean is, if we ask why a BOV is needed on a turbo LS, your answer is always run a BOV. I've tested 30 years. We're not here for the conclusion and reinforcement of what people always say, we're here for data and examples of what you saw and what went bad. You talked about taking data on intake temp for belt driven supercharger's and said the same would happen for a turbo. But did that happen (data?)? You say the air backing up tries to reverse direction of the turbo, but have you seen it happen? It's like asking what heads to run on a SBC and the guys at the car show say double camel humps. Then you ask why is that the best head and they say run double camel humps. It's not answering the question. Do a test and show the damage & settle it for us before I build my cold side! I assume sitting on the 2-step is worse for the turbo than no BOV, but i have no proof to offer.
![Boost Control Explained [GO FAST BRETT]](http://i.ytimg.com/vi/3SrAxPhW_Es/mqdefault.jpg)
![Boost Control Explained [GO FAST BRETT]](/img/tr.png)
Richard keep up the great work Buddy thanks for explaining things you are my go-to guy 351 Cleveland in a 1970 Mach 1 shaker had it since 1980 you can see it on woodson road rally video sincerely DT
I've blocked off of blow-off valves on 2 centri blower set-ups looking for boost leaks, boost loss. It had no effect other than no ricer noises when letting off the throttle, but this was on low boost. Not creating heat while out of boost is the benefit I can see with a functioning bypass valve.
if hooked up properly, a bypass valve won't leak-but they do work
I have been wondering what that noise was!
ANY ideas on this? I bought a M90 Eaton TRD supercharger for my 4.7L v8 and noticed the bypass valve was removed and welded the butterfly valve in a slightly cracked open positive so not to make boost at idle. Anyone see problems with this? My guess is to have instant throttle response but will have less total boost pressure? My purpose is to make more low end torque at low rpms to pull a trailer up mountains. Should I cut the weld and go back to a vacuum bypass valve...which way is better?
the valve should be closed for boost-open for cruise
The "clicking" noise that someone mentioned is the camera trying to continuously focus...
Hell yes they are I can't have my woosh sounds without my bov
Can you have a blow off valve set improperly I just installed one on my vortech and don't know exactly how to set the adjustment screw does the amount of boost matter are cam size
the adjustment screw on the BOV determines how much vacuum is required to open-it has nothing to do with boost
Procharged might be different
100% off topic can I ask a favor when you test the 292? Can you either do heat gun readings off the block front to back or if there's one available do some FLIR images?
Was listening to this video and the discussion on the thermal distribution of the 4.0L Jeep engines is interesting. There's about an hour of listening there and it's pretty interesting stuff to pay attention to.
th-cam.com/video/Rr53-kp4Kmo/w-d-xo.html
Richard I entered the email wrong I guess can you resend to me
killerbe16@aol.com
NOT NECESSARY! there ain't not 1 turbo diesel truck WITH a blow off valve because they are not needed
There's no throttle to plug up the charge flow by letting off the fuel pedal either on diesels... so, you're right in that case!
Richard, you answered the way Sloppy Mechanics Matt warns boomers do. Does a turbo LS need a BOV? "I've done lots of testing, I've done this 30 yrs, always run a BOV, closing the throttle tires to reverse the wheel durection..." Where's the transparent Richard answer? What did you test? What were the results? Did you measure the compressor reversing direction? What goes wrong when you didn't use one on a turbo? Robert at Forced Performance said in his experience it wears out the thrust bearing in the turbo he thinks. Show us what you've learned, man! Still love what I've learned on your channel, but I've never seen a real answer on this topic, it's always skipping the why and examples and straight to "always run one" or "they're more points of failure and don't do anything but sound better".
I agree with Robert that it decreases turbo life and can (as previously stated) damage the turbo. I'm not sure what you are asking for in the way of a transparent answer-the discussion given was already that.
@@richardholdener1727 Thanks for still reading comments after blowing up in TH-cam popularity. What I mean is, if we ask why a BOV is needed on a turbo LS, your answer is always run a BOV. I've tested 30 years. We're not here for the conclusion and reinforcement of what people always say, we're here for data and examples of what you saw and what went bad. You talked about taking data on intake temp for belt driven supercharger's and said the same would happen for a turbo. But did that happen (data?)? You say the air backing up tries to reverse direction of the turbo, but have you seen it happen? It's like asking what heads to run on a SBC and the guys at the car show say double camel humps. Then you ask why is that the best head and they say run double camel humps. It's not answering the question. Do a test and show the damage & settle it for us before I build my cold side! I assume sitting on the 2-step is worse for the turbo than no BOV, but i have no proof to offer.