Twin Turbo or Single Turbo?

[R32's Kick ass]

Whats the better setup???

[crayzayjay]

Two small turbos. Not too small

[Moppie]

For what purpose and on what car?

[crayzayjay]

wow... the fact he replied so quickly shows how enthusiastic he was about finding out.

Whats the point in asking the question if you dont even wanna know the answer?

[Miltown_Racer]

Depending on the type of turbos you are using, u'll get diff. results.

For example.

Supra TT: (Not really TT. more like sequential turbos)
The supra consist of one small turbo and a bigger turbo. The smaller turbo is use for the low end, so u can get off the line quick and midway thru the power band, the bigger turbo kicks in and creates a powerful top end. Almost lag free.

1 turbo setup...let's use a T78 and T88. The reason why people usually do a single turbo conversion into a T78 or T88 turbo is because of the powerful top end power. Has a bit of a lag, but the top end is crazy and will last long enough to spank almost any car.

correct me someone if i'm wrong or if u got some more to add.

[Self]

Guy above is pretty much dead on. Can't really say which is better, depends completely on the car, the driver, and what you're trying to do exactly.

[Polygon]

Four cylinder: Single Turbo

Six cylinder and up: Twin Turbo

JMO, everything else has really been covered anyhow.

[Self]

Originally posted by Polygon
Four cylinder: Single Turbo

Six cylinder and up: Twin Turbo

JMO, everything else has really been covered anyhow.

I'm not the biggest fan in the world of TT setups. I think they are the ultimate in COOL:smoka: but if I was personally going to add a turbo setup to my V8 I would go with a large single turbo, and let the displacementally fueled torqueness of my car to take car of things while it spools

[flylwsi]

the plumbing of a tt v motor is easier though... the single turbo setup would be nice, but i think you'd still see some lag... even with a v8...

http://veccohpec.com/turbo1.html

that's my friend's tt mustang... i'm not sure how he'd get 1 turbo in there... two are smaller, spool quicker, and can still make tons of hp...

he's got t3/t4's on it... and it pushes about 500 hp right now. should be over 1000 when he's done playing...

[FYRHWK1]

if the motor has 2 sets of exhaust ports (IE V8, flat 4, etc.), 2 turbos of equal airflow compared to a large single will spool up faster since there is no crossover pipe. on a motor with 1 set of exhaust ports a single is more likely tospool faster because instead of 2 turbos inefficiencies, you only have 1, and theres no long crossover pipe robbing heat from the exhaust gas.

[BLU CIVIC]

COULD YOU PUT A TT ON A 4 CYL IF ROOM ALLOWED OR WOULD IT BE A WAST OF TIME??

[Polygon]

Originally posted by BLU CIVIC
COULD YOU PUT A TT ON A 4 CYL IF ROOM ALLOWED OR WOULD IT BE A WAST OF TIME??

You can, and I have seen a few TT four bangers, though I find it useless. One turbo is far more efficient in a small engine setup IMO.

[Self]

You can definitely put a TT on a four cylinder, just don't think it would really be necessary or worth the extra money, time, or effort.

[Miltown_Racer]

Definitely a "No, no" for an inline 4. There would be a tremendous lag time before the turbos actually spool up that the most u could enjoy is a full 1000 RPM of its power.

[Moppie]

The Subaru Legacy GT and RS uses a 4cly engine with sequential Turbos, however since its boxer engine there is plenty of room to run the expanse of pipes required. I think it was done more as a marketing ploy, and attempt to over come the engines loss of low down torque to enable it to pull what is a very heavy car.
It is very common to remove the low speed turbo from the system all together, and run only on the primary, or even swap to a larger primary turbo.

On an inline 4cyl its rather a waste of time, and of course very few cars have enough room to accomdate the mass of piping that would be required.