Anyone pull their twins in favor of a single?

[Matt400]

Ok. . don't laugh. . but I have to ask.

Anyone pull their twins in favor of a single?



Not for some reason like selling the truck but for some other reasons like they were too temperamental or your power needs changed.

I had been thinking twins cuz I really don't want to go through several singles like most do on the way to twins, now comes the Jammer BB

• spools like stock
  
• flows like H2E
  
• Efficient to 53 psi
  

Sounds too good to be true then a couple of guys toast em along with reports of not cooling any better than a HX40 and I am scratching my head again contemplating twins.



So anybody ditch twins. . or are twin drivers for life?

 

[Tim]

Are you nuts?



I think the stock turbo is laggy as hell, even if a bigger single could spool like stock, stock still sucks.



One day I'll just have to invest in some twins. I wouldn't even unbolt the stock turbo unless the twins were going in...

 

[Cummins Thunder]

I think if you were to use a CATCHER ECM you would find much better spool of the stock turbo.....



The turbo only spools when fuel is added, on the 24v trucks they only add fuel as the boost comes up... ... . However if you dump lots more fuel at once (this is where the CATCHER comes in) you will spool the turbo much faster.

 

[4xquadrod]

Twins

I hear once you try em, you'll never go back.

 

[Partyat33]

I can't believe you would even ask that question !!!!

 

[Matt400]

Well a friend of mine who has had them said they are finicky, hood is up allot more adjusting things and tightening clamps and such and I am not looking to add more maintenance time.

 

[R-N-R]

However unpopular, there is a theory about a single having less parts to fail, taking up less space, less complex, etc... There seems to be a few people that are building singles that can spool-n-cool a lot better than what was available when twins first started becoming popular. I have to admit that twins sure seem like a hard act to beat, but I believe there are alternatives depending on your configuration and usage.

 

[Tim]

Well a friend of mine who has had them said they are finicky, hood is up allot more adjusting things and tightening clamps and such and I am not looking to add more maintenance time.

Any time you make drastic mechanical modification you and expect a learning curve, but once it's dialed in, it's there to stay!

 

[JGK]

Matt,



While it is an unpopular question, kudos to you for bringing it up. Challenge that conventional wisdom! :-{} That's how new products and advances come about.



Due to the nature of how turbos work, it will be hard to find one that has the broad range of capabilities we typically demand - quick spool-up on the low end without lots of fuel, but then still efficiently pushing air at 3000+ RPM and keeping EGTs in check. But the new variable geometry turbos may do that. Or perhaps some other approach.



In the mean time, twins on our trucks have been refined pretty well in the last few years. Most of the bugs have been worked out and a handful of "best" combinations have been identified. This is the advantage those of us that are now installing, or planning to install twins are seeing.



So now, like Tim said, "Once its dialed in... ". That's my hope.



Planning and accumulating parts,

-Jay

 

[Cummins Thunder]

Don't flame me, but... ... I want a RELIABLE V. G. T. turbo... .



Like the Banks project, but I want one that don't say Banks!

 

[Matt400]

What about the Aurora MST The valve they use reminds me of a power valve in a 2 stroke dirt bike, makes allot of sense but not much feedback yet on those.

 

[NPloysa]

Matt, saw that turbo in person at the ATS day in mid February. It was on a display stand and learned about it. I would love one of those. Not very big,(dimension-wise, no worrying about space) but will spool like a stock (or better) turbo and hold over 600 hp efficiently.



Nick

 

[TReed]

Don't know how much fuel your running or planning to run as I have a 12 valve, but if you want a real nice big single talk to J. R. Adkins. He is making his Lil 55' with a 14 housing as well as 16. It doesn't spool like stock but it ain't no lag pig either. And this thing moves extreme air. Good turbo fo a big single that's not a lag pig.



Travis

 

[Matt400]

Got a link for ADKINS? I did a quick google and couldn't find anything.

 

[TReed]

He doesn't have his website up yet. Give him a call he will be glad to answer any questions you have and may point you in the direction you desire as he does twins also as a variety of singles.



ADKINS DIESEL PERFORMANCE

(317) 281-3130

 

[Matt400]

Thanks for the number, I will share what JR said:

No Lil 55's yet on a 3rd gen but he feels it would be good. Claimed spool was as good as an HX40 yet cooled way better. Waste gated to 45-50 psi. Says no one has broke it yet which is amazing considering what we read about others here and that includes racers & pullers using nitrous.

Drive pressures stay well under boost pressures.



He has customers that are so heavily modified that only twins would do yet with the Lil 55 they have a hard time breaking 1200 deg.

He felt you could tow with a hot box turned up and still cool. He said at 1700 you will see 10 psi. He agreed spool would be slower than my HY35 but not allot and very drivable with boxes turned off. $1850. 00 was the price.

 

[R-N-R]

Looks like an excellent model for my truck and usage as well.



$$=Turbo+downpipe+clamp, 2-4 weeks to build.

 

[Matt400]

Yes, with your 2wd I bet you don't run all that big of tire + 4. 10's and the Lil 55 will probably spool ok.

For the money I would give the Lil 55 a try before the Aurora 5000

I have 3. 73. s and 33" tires, may even go to 34's in the fall so the MST is probably a better choice for me.

 

[TReed]

I knew JR would be the man to ask he's an awesome guy to deal with. I couldn't be happier with my Lil 55. When this things hits 10psi hang on because it lights quick and fast. Definitely good choice for somebody running alot of fuel and wanting single charger.



Travis

 

[Reb.B]

i've had big twins, small twins big turbos, small turbos, and i'm still not sure what's best. Twins are nice for keeping the egt's down. They don't explode as much. They are harder to figure out and harder to install. The best turbo to run soon will be the VGT turbo from ATS. Its huge inside, necks down to about 7-8cm, opens to 18. 5 cm, and THEN wastegates the rest. Steve at the old ATS designed it, and supposedly switzter (aka. airwerks) is building it. Its going to spool, keep egt's down and make HP. The most important feature is that it is SIMPLE. Older VGT's had to be liquid cooled to work and were way to complex. They were controlled by a computer, they are controlled by a spring and exhaust pressure. I think that twins just take to much energy to run. You need studs, firerings, porting to keep the heads on. A nice spooling, nice flowing 50 psi single is going to be the all around best bet.