So the 3" check valve I ordered came in last night. Pretty disapointed... Granted, it is made for boats to keep the water from coming in the exhaust, but I thought there would be tighter tolerances than this. Does anyone know where I can find a check valve that would actually stop air flow from flowing through it?!

Did you put an LED light in that? Because when I saw the image I had absolutely no idea what I was looking at lol. Hmm... automotive exhaust check valves? I'm afraid you may have to find an industrial check valve! You may want to check VibrantPerformance.com or something to that tune. Maybe Motovicity to see if they even have something like that... while you can't purchase from them directly, they may be able to tell you if they have it. Other than that, you might have to design one there buddy!

Lol, yea it is an LED flashlight so you can easier see where the gaps are... everywhere! This is what it looks like without a flashlight shining in it. I will check them out. What I dont understand is the factory sequential twin turbo systems all had multiple check valves in the intake and exhaust, but I cant even find a suitable picture of one! I think I will be making one myself honestly.

lol, yeah, that looks like some quality stuff there!

Haha, yeah I may be making one myself or switching to a unit like this:

Originally posted by drxlcarfreak

Haha, yeah I may be making one myself or switching to a unit like this:

I feel that while it may have be more prone to failure, I think this method would be much more effective during operation. No? But more hoses for leaks!!

Originally posted by TeamRevvolution

I feel that while it may have be more prone to failure, I think this method would be much more effective during operation. No? But more hoses for leaks!!

Its good enough for an Eatom M90 supercharger? Although... they typically do go on unreliable american cars. Lol jk. Actually, this is very similar to the bypass valve that is currently sitting on my front porch, except it has an electric motor. This method has more ability to change when it opens, instead of the turbo having to overcome the breakover point of a check valve. True, but eventually when this is tried and true, I want to involve an electronic management system and replace some of the pneumatic actuators with servos or other electronic means to massage more power and response out of the system.

I wish ya good luck on this setup man! That would be awesome to do it up with servos. It would be much more precise that way.

Servos are precise, but can they be quick enough to open and close between shifts etc? The one I have takes about 2 seconds. I can shift 3 times in 2 seconds! A solenoid is instant, but it isnt progressive. Are there any faster linear motion electrical actuated devices that I could use?

Oh boy that does prove to be a slight issue now... Do you think you could find a servo out of a transmission to actuate it? Would that be quicker then 2 seconds? And a solenoid is instant.... Im trying to think of what else you could use that would be linear...