[greensupra_87]

Has anybody ever tried that?

 

[PhoeniXDownVII]

Ummm WTF Mate?

 

[greensupra_87]

Using 2 different turbos
The smaller one spins up to speed very quickly, reducing lag, while the bigger one takes over at higher engine speeds to provide more boost.

 

[PhoeniXDownVII]

Ummm WTF Mate?

 

[SupraT04r]

Are you serious.? :tongue:

 

[99rollaguy]

Are you serious.? :tongue:

 

[Supra SONIC]

The supra TT is a sequential turbo engine, with two ct26's. Initially, only one is on for responce, then the second clicks on, sharing the exhaust, to get some real power.

Most people switch to a true twin turbo setup when getting larger turbos.

You can't have different sized turbos. Thermodynamic laws won't allow equal exhaust gases to go to each turbo, so that idea, which has been discussed, isn't possible.

--Justin

 

[greensupra_87]

The supra TT is a sequential turbo engine, with two ct26's. Initially, only one is on for responce, then the second clicks on, sharing the exhaust, to get some real power.

Most people switch to a true twin turbo setup when getting larger turbos.

You can't have different sized turbos. Thermodynamic laws won't allow equal exhaust gases to go to each turbo, so that idea, which has been discussed, isn't possible.

--Justin

I guess I didn't explain my idea very well
I heard it has been done on the rx7, with some custom exaust mani, and valves, but it could be a myth. That's why i'm asking.

Searched and never found any info:dunno:

 

[Trent]

The supra TT is a sequential turbo engine, with two ct26's. Initially, only one is on for responce, then the second clicks on, sharing the exhaust, to get some real power.

Most people switch to a true twin turbo setup when getting larger turbos.

You can't have different sized turbos. Thermodynamic laws won't allow equal exhaust gases to go to each turbo, so that idea, which has been discussed, isn't possible.

--Justin

Sorry dude, MKIV's come stock w/ CT20B's, not CT26's. MKIII's come stock w/ 1 CT26.

 

[Simba]

No, mkIV's come with two ct12b turbos.

And no, you can't use turbos of differing sizes in a sequential manner.

 

[ReI86]

And no, you can't use turbos of differing sizes in a sequential manner.

Why is that?

I’m a noob at cars so don’t flame me or anything.

 

[TRDV6Corolla]

this is comedy..no offense to anyone here..according to the Toyota New Car Feature book for the Gen 4 Supra they call the #1 a CT12a and the second a CT12b.

Matt

 

[Surf]

Owned

 

[electrikoptik]

I guess I didn't explain my idea very well
I heard it has been done on the rx7, with some custom exaust mani, and valves, but it could be a myth. That's why i'm asking.

Searched and never found any info:dunno:

Aren't the latest gen J-spec RX-7 already senquential from factory?

 

[Guest]

ive heard somewhere that sequential is possible, both turbos spool up at the same time but the smaller one, is sped up quicker, making say x boost at Q rpms, but then its wastegate actuates and then the second turbo is still spooling up and keeps going up till it hits its wastegate. ya see?


i just read that somewhere.

 

[Guest]

1jz's have ct12a's.
2jz's have ct12b's.

 

[Simba]

Why is that?

Because the larger turbo will out-flow the smaller one at the same pressure and stall it.

There's also a matter of differing backpressure created by each turbo, which is also on the list of Things That Are Not Good™.

 

[greensupra_87]

ive heard somewhere that sequential is possible, both turbos spool up at the same time but the smaller one, is sped up quicker, making say x boost at Q rpms, but then its wastegate actuates and then the second turbo is still spooling up and keeps going up till it hits its wastegate. ya see?


i just read that somewhere.

Thats what i'm talking about!^^^

 

[Ray745]

Because the larger turbo will out-flow the smaller one at the same pressure and stall it.

There's also a matter of differing backpressure created by each turbo, which is also on the list of Things That Are Not Good™.

and thats what everyone else is talking about

 

[Guest]

i think they do have a mk3 with twin Turbochargers but they only have it in japan i think (GA-70)...

oh ya the Thermodynamic laws state that

1. Energy cannot be created nor distroyed
2. Energy is always lost, in the form of heat usually

so super sonic i have no idea wat ur talking about lol

The supra TT is a sequential turbo engine, with two ct26's. Initially, only one is on for responce, then the second clicks on, sharing the exhaust, to get some real power.

Most people switch to a true twin turbo setup when getting larger turbos.

You can't have different sized turbos. Thermodynamic laws won't allow equal exhaust gases to go to each turbo, so that idea, which has been discussed, isn't possible.