Ok I understand where people are comin from with trubos. If I ran one big turbo, how come I can't make 600-700 hp? Why do I need twins to make that possible? How come is see turbo mustangs with less displacement with one big turbo throwin down 900 hp? Set me stright fellas, I'm trying to figure out the perfect set up.

 

You can make 6-700hp with a big single. Depend some on how much lag you are willing to put up with.

Joe Donnelly and Jim Fulmer (on the TDR) are making 800 some hp, with a single.

 

You can make big power with a single.....maybe more than twins, probably more than twins. Its a double edged sword....the majority don t just race or just dyno.
The vast majority use our trucks to pull the 900 hp cars....or something. A big sibgle will smoke so bad its ridiculous. Twins drive like a stocker with 4 times the pedal. I doubt that a very large single could get in and stay in power while towing, atleast easily since when towing its nice to use the entire rpm range.

 

Jim is running a very streetable set of twin on his truck.

Joe sold his 12 valve. Report from someone that witnessed one of Joe's dyno runs was the turbo didn't spool until 3k rpm.

That should shed some light on the single versus twins question.

 

So why all the smoke, if you tune it right with the right amount of fuel with air it shouldn't smoke soo much right? Is there some sort of piggyback system or stand alone that will allow for fuel adjustments / so that with an external wastegate system and a GT42R Turbo I can use an electronic boost controller and have a low and high boost setting and be able to have a tune for both settings?

 

Twins are for quick spool up....Singles are for lag but alot of boost. Racing you would use twins and for Sled pullin you would use big singles.

 

Ok, I think I go it now

 

Twins use 2 different size turbos, one for low end, one for high. This way you have boost at all rpm's. A single is either quickspool low end power or slow spooling high upper massive power.
-Jim-

 

Thats a better way of explaining it.

 

The big dog sled pullers use twins.
Big singles are only used because they are limited to one turbo in the street classes, but yes they can make power if fueled and revved right. Although some are successful in the prostreet type classes with unusually large single chargers.

 

ATS has a new "Variable Pitch" I think that is what it's called turbo coming out in about 2-3 months. I think the model was Aurora 5000. My brother is an ATS dealer you might PM got......DIESEL? for more in depth info, I don't really no sqaut about the thing all I kow is that it's suppose to have a similar design that the power smoke turbos have

 

"The Aurora Turbo Systems have been designed with performance in mind. ATS will offer the Aurora™ 5000 Turbo Charger upgrade package for the Duramax 6.6L/Dodge 5.9L/Ford 7.3L for special applications such as heavy towing or extreme performance race applications. The Aurora Turbo System has been designed with extreme efficiency in mind and is capable of 60+ PSI for reliable power.
--COMING SOON!--"

http://www.atsdieselperformance.com/...rodrelease.asp

 

Sorry, but I disagree bigtime with almost all the responses...... Twins make big boost more efficiently, period... It also happens to be the case that you can get reasonable boost with less lag too..... BUT,, if you want 100 Psi of boost, you aint gettin it with a single no matter how large... COMPOUND turbos... remember that. They are COMPOUNDed not paralleled. The compressors are in series and they dont add boost, they MULTIPLY boost. .. You want big boost, you need compounded twins.. plain and simple.... Put two compressor sections in compound fashion (series) and with both turbos 'making' what they each 'see' as 25 Psi boost and you have 92 Psi of boost at the discharge of the second one.....

They are not just ‘twins’ they are compounded and that is how you get huge boost numbers efficiently. You aint making 1,200 HP with a 5.9 CTD on ANY single, period.



Kevin

 

Guess it just depends on what you want to accomplish

 

I know, just kicking around all the ideas. Not sure where I want to be. Just thinkin of swaping in the PDR HX35 and some injectors to match.