@@davelowets Then you’ll start melting pistons, bending conrods, blowing head gaskets and so on

@@Manuqtix.Manuqtix sounds fun

@@Ethan_LeBlanc come on man. We must boost responsibly not recklessly

If you need high boost pressures this is your setup. Otherwise just run a single theirs no need to go crazy with a complicated system. It ultimately makes sense on diesels because they can take much higher boost pressure than a gasoline engine. But if you don’t need it don’t over think it.

Usually compound turbos are diesels. Regulating boost isn't a big deal on diesels. As for melting pistons you regulate temp with the timing and amount of diesel you inject.

Head Studs are never always a good idea. However, we always recommend Head Studs for: 1988-2002 engine over 48 psi boost, and fire rings for over 55 psi boost 2003-2007 engine sover 55 psi boost, and fire rings for over 65 psi boost 2007.5-2018 6.7 engines, over 48 psi boost, and fire rings for over 55 psi boost Our Compound Turbo systems are all capable of over more than 55 psi, but are adjustable depending on truck. For a 5.9L with a stocker kit you can run stock injectors up to about 90 hp injectors. what year is your truck?

@@DieselPowerSource It's an 05 automatic. Transmission has been built.

Yes.

Gains

no they have to be different sizes to work properly, eg. the big turbos outlet has to be the same size as the smaller turbos inlet, otherwise changing tube size will cause pressure to go down

You only need the 2 as shown. 2jz is an in-line 6 just like the Cummins, no?

You better have enough Fuel with all the Air the Turbos are blowing into that 2JZ !

These diesels are inline engines.

No it's not

I've never heard the word "gearing" when talking about Turbochargers, only gear drives used with Centrifugal Blowers have different gear ratios that can be used. And No, a Compound Set-up is NOTHING like a Twin Turbo System.

What's the compressor ratio on each compressor of the compound turbo

​​@badass6.0powerstroke10 I guess it's how you look at it idont claim I know every thing been around diesels my whole life and a family own company ten semis in northern Canada

@theobserver6639 the compressor ratios on a compound or sequential set up at two different size turbos always. Twins are the same ratio hints the name twin, also good luck twin turboing an inline engine.

Grandson

The smaller turbo is used to raise the boost pressure of the primary turbo air flow. The primary turbo increases air volume or density for the secondary turbo making the secondary turbo swallow and compress far more air than it could by itself.