triple compound wastegate setup?

UnderPSI · Jun 18, 2015

How do you run you're wastegates on a triple compound setup?

Black AOD · Jun 18, 2015

very carefully

Vader's Fury · Jun 18, 2015

triple compound as in 1 feeds 2 feeds 3, or 1 and 2 feed 3?

I am assuming that you mean the first one, but just want to clarify.

bigrpowr · Jun 18, 2015

UnderPSI said:
How do you run you're wastegates on a triple compound setup?

you weld them on.

UnderPSI · Jun 18, 2015

1 feeds 2 feeds 3.

madman1234509 · Jun 18, 2015

My first question is, is this a set up with vgt compounds in it, or is it a set up with 3 non vgt chargers. If it's a vgt set up you can run the gate(s) on the up pipes around the vgt set up to the hot pipe running to the atmosphere turbo. This is really the only option unless you have a bigger set of vgts that have the gate provision in between them.

If it's a non vgt set up, I'd bypass the smallest turbo with a gate on each up pipe and dump into the pipe feeding the middle turbo, and bypass the middle turbo with a gate on the hot pipe to flow into the atmosphere. Whether or not that gate needs to be used is dependent on the set up and amount of fuel.

UnderPSI · Jun 18, 2015

Would be adding a third to the stock style turbos.

madman1234509 · Jun 18, 2015

Dump the gate into the pipe going to the atmosphere. With the potential for wicked high back pressure it'd be nice to have a gate on each up pipe.

UnderPSI · Jun 19, 2015

Thanks.

02bigstrokin · Jun 19, 2015

This is how I had my Duramax triples set up..

BOSS450 · Jun 20, 2015

02bigstrokin said:
This is how I had my Duramax triples set up..

Nobody cares

Jonnydime · Jun 20, 2015

UnderPSI said:
Would be adding a third to the stock style turbos.

Play with the duty cycle on the vgt and maybe run one of the RCD drop in turbos with the larger turbine. You may be able to get by with out a gate.

sideactiondiesel · Jun 20, 2015

system needs a gate to make work properly ...

madman1234509 · Jun 20, 2015

Yea, I don't doubt that one bit. That Nathan kid on fb has a 100lb boost and back pressure gauge pegged supposedly. He's got big fuel, but that's just too much. An 80mm should be able to flow almost, if not all of the exhaust this engine can produce with a correctly sized ar. I'd definitely bypass the factory compounds into the large atmosphere. Possibly even a gate to bypass the atmosphere just in case.

UnderPSI · Jun 20, 2015

Right now I have a 44mm gate on the up pipe like elite, was curious about the need for another gate to bypass the atmo, which would be the new 80mm turbo I have laying around.

UnderPSI · Jun 20, 2015

02bigstrokin said:
This is how I had my Duramax triples set up..

Thanks for the help, that looks like 2 atmo feeding 1 high pressure, I'm looking at putting 3 turbos in series.

Jonnydime · Jun 20, 2015

The biggest restriction is in the factory Atmo and I don't see a real good way to bypass it with out going around the whole setup. At that point you would need to add a second gate to the drivers side or somehow connect the up pipes to equalize the pressure.

madman1234509 · Jun 20, 2015

Honestly the gate to bypass the 80mm will only be neeeded if boost or back pressure still gets out of control after bypassing the factory compounds. With the correct ar like a 1.32 you may not even need a gate on it. My 88mm with a 1.23 ar does not need to be bypassed, even though we put a gate on it just in case. We put a gauge on my intermediate pipe and it never went over 1.1 No matter how much boost it made, meaning it's not a restriction compared to the 66mm I have.

If at all possible I'd try to gate each up pipe, especially with a triple set up and the potential for crazy bp numbers with added fuel. Dump everything into the hot pipe feeding your 80mm.