Twin Scroll Vs. Standard Scroll
Jul 21, 2004, 07:46 AM
#17
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bolsen, he isn't talking intake side. Higher pressure at the exhaust port one one cyl than another will reverse flow of gasses at the lower pressue cyl.. it gets pushed in not pulled.
Jul 21, 2004, 07:54 AM
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Originally Posted by WildRice
bolsen, he isn't talking intake side. Higher pressure at the exhaust port one one cyl than another will reverse flow of gasses at the lower pressue cyl.. it gets pushed in not pulled.
Jul 21, 2004, 08:06 AM
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Well guys this is turning into a great topic. Thanx for everything. I think im going to keep my twin scroll setup. Now if we can get some vendors in here to talk about why they didnt and why they did use it 
Jul 21, 2004, 10:10 AM
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Originally Posted by 3deep
Hey 2K4,hows your spoolup with that GT35r.Im installing mine now.Is it laggy and when do you se 20 psi.
Thanx
Chris
Jul 21, 2004, 11:50 AM
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Because they haven't taken the time and money to make a twin scroll turbine housing for their turbo setups. The twin scroll will spool faster and make full boost faster than a single scroll EVERY TIME.
Originally Posted by 95GSXtoEVO8
I would love to hear from some venders regarding the twin scroll vs. standard scroll. How come few venders (only one that I know of) utilize the twin scroll technology, which mitsubishi uses as a selling point for the cars turbo.
?
?
Jul 21, 2004, 11:56 AM
#24
Originally Posted by 2k4EvoVIII
I actually just got mine today after much debate. But the outcome finally was in my favor. I will be installing it this weekend. But after talking to George at Boost Solutions and HPFreaks and telling them my mods and everything they are expecting full boost by 3500-4000. I will be installing it this weekened and will let you know how it goes. At first i will be running the MAF until i can get George up here to tune the AEM and convert to Speed density which should be in 2 weeks. So i will let you know both ways how it goes. You might have yours done before me so if you do PM me with your mods and the outcome.
Thanx
Chris
Thanx
Chris
Jul 21, 2004, 11:59 AM
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Originally Posted by bolsen
Im in agreement that the t3 housing is too small. BUt the t4 housing is what I want to know about.
The equal length manifold will act as a pulse, as the twin scroll is designed to do, from what I've heard. So maybe that's why neither is worse nor better because they are the same.
Technology or not, old vs new, airflow is airflow.
The equal length manifold will act as a pulse, as the twin scroll is designed to do, from what I've heard. So maybe that's why neither is worse nor better because they are the same.
Technology or not, old vs new, airflow is airflow.
Jul 21, 2004, 12:08 PM
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Originally Posted by Fenris Ulf
Actually an equal length manifold will not act as a pulse, you need to read up on your Helmhertz effect my friend. An equal length manifold and unequal length manifold will generate pulses. The twin scroll manifold and turbine housing separate the pulses so they do not interfere with one another, strengthening the kinetic and thermal energy from which the turbine extracts work. An ideal exhaust setup would have nice long, equal length runners with a twin scroll, inverted cone merge collector mated to a twin scroll housing much like on the OEM turbo.
Is that like some type of rental car? 
FYI I don't know the answers to it all, that's why I'm trying to learn
Jul 21, 2004, 10:39 PM
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Originally Posted by EvolvedfromaWRX
here is an ignorant question...which aftermarket setups (kits) are twin scroll. when you change the turbo setup does that eliminate it?
thanks
thanks
The RNR one is old T3 style
the AMS one is old T3 style
The Buschur one old T3 style
Thats about all that im sure of. I ended up getting the ATP kit then got a twin scroll tubular manifold to go with it.