Twin Turbo???
Senior Member
Joined: 03-15-09
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From: Ontario
our turbo isnt really isnt supossed to be as effecient as it is.
it uses a twin scroll design
each of two scrolls on the turbine is fed by a seperate exhaust passage
one from cylinders 1 and 4 the other from 2 and 3
this is what eliminates lag @ low speeds
go drive a k04 on an old V dub or something, you'll see
it uses a twin scroll design
each of two scrolls on the turbine is fed by a seperate exhaust passage
one from cylinders 1 and 4 the other from 2 and 3
this is what eliminates lag @ low speeds
go drive a k04 on an old V dub or something, you'll see
I thought it was more like one smaller exhaust channel and then a larger one. The small one is always open and then the larger opens at like 3-4k rpms. the small channel increases the exhaust escape velocity by projecting it through a small opening giving enough force to start spooling the turbo at low rpm? am I right?
Senior Member
Joined: 03-15-09
Posts: 5,585
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From: Ontario
what i said is true for sure
as far as the inner diameter of this exhaust passage im not sure, i was believing that the vanes were pitched differently but you cant quote me on that, i would say one of is right thou
as far as the inner diameter of this exhaust passage im not sure, i was believing that the vanes were pitched differently but you cant quote me on that, i would say one of is right thou
I thought it was more like one smaller exhaust channel and then a larger one. The small one is always open and then the larger opens at like 3-4k rpms. the small channel increases the exhaust escape velocity by projecting it through a small opening giving enough force to start spooling the turbo at low rpm? am I right?
To add on to my previous post.... I think win charging it with our turbo (K04) would be useless as it is a small turbo and spools at a very low RMP. I would say to twin charge it after a larger turbo is installed.
But I may be wrong. What if there was some kind of clutch system for the SC pully? Like it disengages at a mid range RPM when the Turbo is spooled up, or would that be retarded? maybe a smaller pully?. I thinks that's a practical idea, but has a clutch system for a SC ever been done or thought of?
But I may be wrong. What if there was some kind of clutch system for the SC pully? Like it disengages at a mid range RPM when the Turbo is spooled up, or would that be retarded? maybe a smaller pully?. I thinks that's a practical idea, but has a clutch system for a SC ever been done or thought of?
Last edited by HunterKiller89; Jul 8, 2009 at 03:47 PM. Reason: Automerged Doublepost
Senior Member
Joined: 05-11-06
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From: Auburn, WA
Vince and I were discussing this the other night. It would be interesting to mount a second, larger, tubo via STS rear mount. It would be sequential with the stock turbo feeding the 2nd, larger, turbo. Boost tubing from both would feed the intercooler with each turbo having it's own dedicated air intake. MAF would be re-located to the cold side boost tube.
Just an idea.
Just an idea.
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Joined: 07-25-08
Posts: 12,450
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From: Florida
Senior Member
Joined: 07-25-08
Posts: 12,450
Likes: 6
From: Florida
Vince and I were discussing this the other night. It would be interesting to mount a second, larger, tubo via STS rear mount. It would be sequential with the stock turbo feeding the 2nd, larger, turbo. Boost tubing from both would feed the intercooler with each turbo having it's own dedicated air intake. MAF would be re-located to the cold side boost tube.
Just an idea.
Just an idea.
Senior Member
Joined: 09-25-08
Posts: 5,384
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From: Depew, NY
Member
Joined: 02-04-08
Posts: 233
Likes: 0
From: S. Florida
Vince and I were discussing this the other night. It would be interesting to mount a second, larger, tubo via STS rear mount. It would be sequential with the stock turbo feeding the 2nd, larger, turbo. Boost tubing from both would feed the intercooler with each turbo having it's own dedicated air intake. MAF would be re-located to the cold side boost tube.
Just an idea.
Just an idea.
Member
Joined: 01-25-08
Posts: 355
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From: bowling green ky
for a 4 cylinder i would use only 1 properly sized turbo for ur app...running 2 would creat alot more heat not to mention would probably hurt spool time not help it..2 cyl...for a turbo..not much flow there and espicailly if ur running a rather large turbo off 2...id say waste of money..not to mention tuning would be fairly harder and have to be very percise...just another thought think about the 2jz guys with there supras...inline 6 twin they swap that out for just 1 fairly massive turbo that spoolls quick because of all 6 cy....sometimes more isnt merrier
for a 4 cylinder i would use only 1 properly sized turbo for ur app...running 2 would creat alot more heat not to mention would probably hurt spool time not help it..2 cyl...for a turbo..not much flow there and espicailly if ur running a rather large turbo off 2...id say waste of money..not to mention tuning would be fairly harder and have to be very percise...just another thought think about the 2jz guys with there supras...inline 6 twin they swap that out for just 1 fairly massive turbo that spoolls quick because of all 6 cy....sometimes more isnt merrier