no the point of the valve is to not act like a twin scroll lol. and thats not an undivided manifold. look at it. two separate runner inputs..




so you're saying then that this is a bandaid for people running an improper manifold on a divided turbine?

 

yes, it pretty much works the same way

right in the website says... use on undivided manifolds... your creating a twinscroll affect

 

nvm just read it on their website.

"YOU MUST HAVE A NON DIVIDED MANIFOLD!"

so this is just a bandaid for people running a divided turbine on a nondivided manifold instead of setting it up like they should with a divided manifold lol. making money off people's improper setups, best business ever hahah

 

how does closing one side then create a twinscroll? lol

 

dude it maybe a shady looking product but lol the thing works, turn a t3/t4 into a twinscroll, its big in the supra community

 

lol 2 wastages? using lower boost to preload for quicker full boost

 

i'm not saying it doesn't work. i'm its a bandaid for people running an improper manifold (i bet they'd see better spool with a divided manifold vs running this on an open manifold).

also. i think you're misreading it. it does not create a twin scroll. it makes a twin scroll act like a single.

"... blocking a scroll of the divided turbo housing, making the turbo act as if it were a smaller turbo. All the exhaust energy is routed through half the turbine housing, causing the turbo to spool at a much more rapid rate."

thats not making a twin scroll lol. thats making a single out of a twin. and then opening it back up when at full boost deeper in the rpms.

 

no no, ur reading into it... i said it sounds like creating a twinscroll affect not literally... just towards the concept, ur right on the band aid that this thing is lol

 

no, 2 wastegates because thats how a proper divided manifold and twin scroll turbo works.

four runners, two inputs. two runners go to each. completely sealed off. so each needs their own wastegate.




not this twin scroll turbo on an open manifold stuff you guys are talking about...

 

lol i just see 2 wastegates and think twin lol but i see ur point

 

no lol. read what i quoted from their page. it is taking a twin, and creating a single by blocking off part of the turbine wheel. it is not creating a twin like you're thinking. its taking a twin, making a single.

 

ya i got that lol

 

i'm just saying you need to understand the product before "i'm gonna run this"

that valve does not create a twin scroll effect. it creates a single effect ON a twin scroll turbo. it is designed to be used with a twin scroll turbo mounted to an open style manifold. it is a bandaid for people who aren't running a divided manifold.

that being said.

if you're running a turbo with a divided housing on a cobalt. you should rethink your build. you're using one thats way too big.

you say you're going to run the 6262 on your car. what housing? and don't say the T4 .58 a/r. because if you take say a zzp turbo manifold and kit, the T3 .63 will spool faster than the T4 .58 even with the use of that valve you're talking about

 

im running t3 .63, lol and my build is just fine, im probs not ever gonna run it seemed like a good idea at the time my friend has one and i got excited sooo

 

then you have no need for that valve

 

im trying to get rid of a gt3582R if this helps anyone.

 

i know lol thats why i probs wont use it... i just get ideas in my head to run crap most ppl wouldnt, i get bored easily

 

Pretty much imagine this

Without quick spool valve:



With quick spool valve:




LOL, pretty much the concept behind that. That's why you don't need a twin scroll manifold. It pretty much creates more back pressure etc or something.

 

L o l

 

So y not a efr twinscroll on a t4 flange

 

The quick spool valve makes a twin-scroll turbo act like a single-scroll turbo with a tiny exhaust wheel. This does force the turbo to respond quicker relative to the amount of exhaust energy that is available. Once the turbo starts to spool, the valve opens and allows the turbo to perform as it was originally designed to at the top end. While this sounds almost too good to be true, it is. The problem with making the turbo act like it has a tiny exhaut wheel is that you more easily run into surge situations. You need to be careful to avoid situations where the total backpressure against the compressor wheel does not exceed the total exhaust pressure driving the exhaust wheel. Otherwise, the turbo will surge. The second issue is that the tuned runner lengths are completely useless while spooling the turbo. Forcing the exhaust from half of the engine to re-route and enter the same tubes as the other half of the engine creates a poorly designed manifold system. Imagine if someone had half of their runners smoothly flowing and equal length right to the turbo and then the other runners went most of the way there and then take a right turn through a smaller tube and snake around and enter the tubes from the other half of the motor. Perhaps(in the imaginary situation) the owner did this because he ran out of room in the engine bay... It wouldn't matter- This would be quickly deemed as the worst manifold design ever. For this reason, it is safe to say that there are serious compromises being made here in effort to pull off this concept. The third issue with this setup is that you now have a bar and metal plate in the inlet of one of the turbine scrolls. Even when it is fully open, it will cause a disruption of airflow. Even if it is minimal, the velocity of exhaust gases flowing to the turbine wheel will be reduced. This can affect max hp numbers, but probably not by a significant amount. Fourth, you also have the disadvantage of the crossover tube that still joins both halfs of the engine. It can easily disrupt the even flow of the equal-length manifold design, which will have an affect on overall exhaust flow potential. Either way, the quick spool valve is a neat idea, but needs some work. There are too many compromises in the current design.

 

well said

 

Nice, that's the info needed here. Most of the supra guys use it AFAIK

 

leave it to the professional to sum up what i was saying. i'll just send them your way next time matt my words hold no merit

 

lol. Most Supra guys with big turbos have HP to spare and could easily give some up for a little quicker spool. In most cases, I bet they could design their setup differently and achieve the same results with much less complication.

There are ways that I could see that concept working well, though. I have an idea how I would set it up. Maybe I'll try it sometime...