Twin HX35's?

[patracy]

What if one was to install two HX35's or HY's? Not in a compound setup. But one running of 1-3 and the rear off 4-6? On two custom headers? Then a custom Y pipe to feed into the intercooler? Wouldn't that address the spooling issue and support power? Or would they still be laggy on the bottom end because they'd only see half the exhaust?

[Whippit96]

Dang Patracy...you are thinking 2 miles down the street from the box....I like it lol.

[patracy]

Originally Posted by Whippit96

Dang Patracy...you are thinking 2 miles down the street from the box....I like it lol.

Not that it matters, but on another forum I'm known as "the box" for several reasons. Much like the previously mentioned idea.

As for the laggyness, wouldn't large (150+ sticks) handle that as well?

[Jeff@XDP]

well it works on nissan motors...


Parallel twin-turbo
Parallel twin-turbo refers to a turbocharger configuration in which two identical turbochargers equally split the turbocharging duties. Each turbocharger is driven by one half of the engine's spent exhaust energy. In most applications, the compressed air from both turbos is combined in a common intake manifold, and sent to the individual cylinders. Both turbos function simultaneously, unlike sequential twin-turbos. Commonly each turbocharger is mounted to its own individual exhaust/turbo manifold, however on inline-type engines both turbochargers could be mounted to a single turbo manifold. Parallel twin turbos are usually applied to V-shaped engines where one turbo is assigned to each cylinder bank, providing packaging symmetry, and simplifying plumbing; however, it is not uncommon for a parallel set-up to be used on an inline engine. Nissan's RB26DETT is an inline-6 that uses a twin-turbo set-up, as is BMW's N54. Toyota's 1992 Supra with the 1JZ-GTE (Japan only) 6 cylinder inline engine also used this same configuration, as does Volvo's 1998-01 2.8L B6284T and 2002-06 2.9L B6294T straight-six engines in the 1998-2006 S80 T6 and 2003-05 XC90 T6, Nissan's 1990-1996 Z32 300ZX with its V6 VG30DETT. Audi's 1997-2002 S4 (B5), 1997-2004 A6, and 2003-2004 RS6 are examples of a parallel twin turbo implementation where each turbo is driven by one bank of cylinders, as the motor in each is in a V formation.

While a parallel twin-turbo set-up theoretically has less turbo lag than a single turbocharger set up, because of marginally-reduced combined inertial resistance, and often simplified exhaust plumbing, the fact that both turbos spool at more or less the same time means that there is still a noticeable bit of lag, especially in high-flow turbo/high boost applications. One way to counter this is to use a light pressure set up where the turbos are designed to output less boost but spool earlier, however, this set up sacrifices top end power. Another system would be the use of variable geometry turbochargers, this system changes the angle of the guide vanes depending on the exhaust pressure giving the system excellent power throughout the rev range. Once used mainly in turbocharged diesel engines, Porsche was the second to use it in a mass-production gasoline-powered vehicle in 2006 with the 911 Turbo (997).

Parallel operation of the turbochargers can still be used to great effect as demonstrated by the Bugatti Veyron; which runs four relatively small turbochargers in parallel.

[rufushusky]

Originally Posted by patracy

Not that it matters, but on another forum I'm known as "the box" for several reasons. Much like the previously mentioned idea.

As for the laggyness, wouldn't large (150+ sticks) handle that as well?

I have seen people through the idea of parallel twins around a bit. I wonder if the exhaust from 3 cylinders would provide enough exhaust gas to drive a turbo designed for 6 cylinders feeding it their waste.

[kooimanj]

i agree with rufushusky

[kooimanj]

twin hx 25's?

[Steveo24]

How about running two chargers from a 4BT????

[jonathanrayce]

Originally Posted by Whippit96

Dang Patracy...you are thinking 2 miles down the
street from the box....I like it lol.

He is always thinking way way outside of the box, but I love it. I had considered this before also.

[rufushusky]

Originally Posted by kooimanj

twin hx 25's?

Originally Posted by Steveo24

How about running two chargers from a 4BT????

Maybe but I wonder how much boost can they really produce? I think that is why you see the compound turbo set up more with diesel because they can handle, most of the time, far more boost and air volume than their gasoline counter parts and I think an s400, s480, ht3b etc would flow more air than even two smaller chargers working in parallel. But I am not a turbologist so I am not too sure. Yeah you can get 35 psi from an hx35 and an s480 but the s480 is pushing a TON more air. I am not saying it would not work I am just thinking return on investment.

I like everyone else here loves how Patracy thinks outside the box.

[nfkfirefighter]

banks has a setup common to this on there sidewinder duramax except one per side so 4 cylinders per turbo and only 40lbs of boost.. works well for them on that duramax i would sugest looking at pictures of that i dont know what setup they have on there cummins though.. it would be good to test and if anyone was to do it i would let you!

[kooimanj]

This is how Idea's R born.