Twin scroll/divided housing manifold.
Mar 22, 2007, 08:39 AM
#46
I can guarantee you that manifold will cost in excess of 1200 dollars. That guy does great work but does it all himself, and to get a skilled
You don't NEEED two wastegates for any turbo, however in order to do a twin scroll manifold right you need to separate the pulses between the divided runners, which can only be done with two wastegates. Look at how AMS does there 42R kits and you will see what I am talking about, running a setup like Drifto, which is who runs MPfab's (Walker's) divded t3 manifold is better than running a straight t3 manifold in terms of spool but will not be as good as a twin wastegated setup. Scorke
You don't NEEED two wastegates for any turbo, however in order to do a twin scroll manifold right you need to separate the pulses between the divided runners, which can only be done with two wastegates. Look at how AMS does there 42R kits and you will see what I am talking about, running a setup like Drifto, which is who runs MPfab's (Walker's) divded t3 manifold is better than running a straight t3 manifold in terms of spool but will not be as good as a twin wastegated setup. Scorke
Mar 22, 2007, 08:44 AM
#47
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So lets say I buy a gt35r twin scroll kit, with the manifold divided with two wastgates, what else would I look for to now that it is a true twin scroll kit?
Thank you.
Also what would be the best possible configuration or design for spool up, in designing a gt35r twin scroll kit? Thank you.
Thank you.
Also what would be the best possible configuration or design for spool up, in designing a gt35r twin scroll kit? Thank you.
Apr 21, 2007, 04:56 AM
#51
Also, you need to understand that unless a different hotside and manifold places the turbo in exactly the same place, your exhaust, IC pipes, intake, etc., will not bolt up. Also, there is the problem of WG placement, because your downpipe won't work. Be advised, you won't be able to convert an ATP kit into something else without a cutting torch and custom fabrication. I know, I was there. . .
Apr 21, 2007, 06:44 AM
#52
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Ted B I always catch you when your not on here. But guys I have seen both Teds and Driftos cars, their setups are awesome.with the twin scroll designs. The DNP mani thats twin scroll is the T4, they offer a t3 but if im not mistaken its not a twin scroll. Ted wanna sell your setup? LOL j/k
Get the dnp man and make a few custom parts. Have fun and keep us updated.
Get the dnp man and make a few custom parts. Have fun and keep us updated.
Apr 21, 2007, 07:13 AM
#53
Isn't a twin scroll just a restriction? I mean like on a stock turbo it may not be realized because the topend of the 16G is limited, but the topend of a GT35R is basically endless, so if you split up the exhaust flow and divert it, wouldn't you be hurting power and topend?
Time for some variable vain technology
Time for some variable vain technology
Apr 21, 2007, 07:18 AM
#54
No, because it's only directing the pulse energy, not diverting it. It's doing basically the same thing an efficient collector does on a set of 'headers'. It's 'pointing' the exhaust pulse directly at the turbine, which minimizes turbulence and maximizes the amount of pulse energy that gets translated into torque on the turbine wheel. This keeps the turbine wheel spinning faster in off-boost operation, which means less acceleration is required to generate boost. This translates into better off-boost response, quicker spool, and faster transient response.
It works.
It works.
Apr 21, 2007, 07:52 AM
#55
No, because it's only directing the pulse energy, not diverting it. It's doing basically the same thing an efficient collector does on a set of 'headers'. It's 'pointing' the exhaust pulse directly at the turbine, which minimizes turbulence and maximizes the amount of pulse energy that gets translated into torque on the turbine wheel. This keeps the turbine wheel spinning faster in off-boost operation, which means less acceleration is required to generate boost. This translates into better off-boost response, quicker spool, and faster transient response.
It works.
It works.
I'm sold, so which manifolds offered in todays well known turbo kits use this? AMS? Buschur? SBR? Anyone?
Apr 21, 2007, 12:24 PM
#58
Guys I can't say I understand all of this... but I'm just wondering... twin scroll is not realy a new idea is it? Why wouldn't Garrett and the big tuners tried this idea a long time ago.
I just can't believe we're sitting here with the Evo 9 now, and only now figuring out a way to lose a significant amount of lag off bigger turbos with no top-end sacrifice.
Ted, what data have you collected to show that you aren't losing top-end? This seems a somewhat difficult thing to test because it seems to me you'd have to show this twin-scroll setup making 700+ hp like all the other big gt35r cars to prove it.
I just can't believe we're sitting here with the Evo 9 now, and only now figuring out a way to lose a significant amount of lag off bigger turbos with no top-end sacrifice.
Ted, what data have you collected to show that you aren't losing top-end? This seems a somewhat difficult thing to test because it seems to me you'd have to show this twin-scroll setup making 700+ hp like all the other big gt35r cars to prove it.
Apr 21, 2007, 01:30 PM
#59
The Full-Race piece and the one I have use single WG, so that knocks several hundred $$ off the total pricetag.
I don't think it's a new idea, but the use of such large turbos on street cars with small motors has evolved into a large market until relatively recently. With drag cars, it doesn't matter so much.
The data I've collected at this point is limited, but there is ample difference that is evident from behind the wheel. I'm putting together a platform that will support the capability of the setup, and will test it then.
... Why wouldn't Garrett and the big tuners tried this idea a long time ago. ... Ted, what data have you collected to show that you aren't losing top-end? This seems a somewhat difficult thing to test because it seems to me you'd have to show this twin-scroll setup making 700+ hp like all the other big gt35r cars to prove it.
The data I've collected at this point is limited, but there is ample difference that is evident from behind the wheel. I'm putting together a platform that will support the capability of the setup, and will test it then.