MSefi.com read only forum (Jan.15,2018)

As an update, 43 psi is not enough

I talked to my buddy that has measured back pressure on a turbo 2jzge with a gte short block

He said with a restrictive exhaust housing (.70) he measured a peak of 89 psi in the exhaust manifold with 30 psi at the intake manifold

He increased the housing size to ...

Haha

Mike, I'll be getting manual measurements of what the pressure is soon enough, and I'll be posting those results. The car has a 3L motor and a small turbo on it, so I think it will give a great indication of maximum (worst case scenario) exhaust back pressure.

Well, I did find this, it at least reads up to 43.5 psi? I guess I'll put a manual gauge on my car and see if that's enough


http://www.thedieselstop.com/faq/9497faq/maint/ecsd/ebp.php3.



SIGNAL FUNCTIONS
The EBP (Exhaust Back Pressure) sensor is a variable capacitance sensor that when supplied ...

Mike,

That makes sense, it probably would be negligible.

My only concern with the diesel sensors is how I can calibrate them and what their range is, as well as how large they are and how I could adapt their thread pitch to a 1/8" npt hole (one ebayer said he thinks it's -6?). I agree that diesel ...

The problem is that with exhaust cooling, there will be pressure loss because it will contract.

What I don't know is how significant or insignificant this pressure loss due to contraction will be?

Is there an isolator that would work well for this? Kind of like the idea where you have a fuel ...

I wonder how well this would hold up to it?

Hey Mike

Thanks for the reply

Was it immune from the gases because of the 12" of stainless and the air inside of it? Or was there some sort of inline isolator that made this work well?

Does anyone know where to get a gas engine back pressure sensor for a turbo car?