Twin Turbo Kit ?

[dirtymax]

sequential turbos are pretty common on diesels because they can handle some serious air and dont have air/fuel ratios other than to much fuel. One problem other than tons of piping is getting the oil temp down. even triples turbos are getting more common, 2 into 1 setups

[cdrazic93]

Originally Posted by dirtymax

even triples turbos are getting more common, 2 into 1 setups

What about 2 turbos feeding 2 turbos... a double compound setup...talk about oil cooling?! You would probably have more piping and turbo displacement than actual engine displacement

[TwinturboCamry]

Why not tri-turbos?

[raven1231]

Or a twin turbo Camry!

[wparsons]

Why anyone would want to squeeze in two turbos on a small car when most cars that come with two turbos are trying to find a way to run singles is beyond me.

Supra, Skyline, S4, etc all make better power with a single turbo than two smaller turbos.

[czar07]

Originally Posted by carlitosway6891

Thanks for the correction on sequential vs compound, my mistake but also to clarify, both turbos on a stock supra are different sizes, well, maybe depending on generation....I'm referring to the mk4

52mm/44mm (inducer/exducer)
58mm/39mm (inducer/exducer)

No both turbos are the same size on all MK4 Supras 1993-2002.
I think you are getting confused between the USDM (smaller CT12B turbos) and JDM (larger CT20A turbos).

The above sizing you have stated is USDM sizing. The first pair of numbers (52/44) is for the turbine wheel and the second pair of numbers (58/39mm) is for the compressor wheel.

[dirtymax]

Originally Posted by cdrazic93

What about 2 turbos feeding 2 turbos... a double compound setup...talk about oil cooling?! You would probably have more piping and turbo displacement than actual engine displacement

....http://www.duramaxdiesels.com/forum/...t=23550&page=9

[mwjcyber]

I hate this thread.

[dirtymax]

Originally Posted by mwjcyber

I hate this thread.

why? because this thread has nothing to do with your tiny motor?

[D K]

Originally Posted by Reaper

You couldn't put big enough tires on this car to ever need a sequential.

Sent from my SAMSUNG-SGH-I747 using Tapatalk

Who was talking about NEEDING anything?

Single turbo is more than enough

[mwjcyber]

Originally Posted by dirtymax

why? because this thread has nothing to do with your tiny motor?

Yeah.

But did enjoy looking at that crazy quad-turbo Duramax diesel setup you posted. Thx.

[dirtymax]

Originally Posted by mwjcyber

Yeah.

But did enjoy looking at that crazy quad-turbo Duramax diesel setup you posted. Thx.

cool. I dig the crazy turbo setups some of the diesels have but realize one turbo is more than enough on our cars. to bad I live in California

[cdrazic93]

Someone just needs to be crazy enough to try and plop 4 small turbos lower the CR a lot, so those turbos would do something...but at that stage you'd do it just do say you did it.

[Poodles]

Originally Posted by Sellout

I've seen it claimed both ways, actually. I've never been able (never cared really) to get to the bottom of which models had which set of turbos, but it seems both Toyota and Mazda at different times used different turbos in some and identical turbos in some of their sequential set ups. Hashed that out about 10 years ago on the Supraforums...

Also: those measurements you listed are the measurements for the compressor and turbine wheels in the export spec (non-jdm) Supra, not two different turbos, just the two wheels in the CT12B turbo.

The vast majority of them have identical turbos, I've never actually seen one that didn't have identical turbos, only seen somebody's evidence that they existed way back then...

Yep, same size on both. Early twin turbo setups where parallel (1G-GTE, 1JZ-GTE) and one can make the stock twins on the 2JZ act the same way. Turbo tech has come a hell of a long way, so a twin setup isn't really needed unless it's for packaging reasons (usually on an engine that isn't inline). Probably the cheapest way I know to get much the same performance is with a quick spool valve (Sound Performance makes them) and a nice modern turbo.

Originally Posted by raven1231

Or a twin turbo Camry!

Been done. People knock on the Camry, but the V6 model has always been a bit of a crazy sleeper. Got a beater one and it makes ricers cry

Originally Posted by wparsons

Why anyone would want to squeeze in two turbos on a small car when most cars that come with two turbos are trying to find a way to run singles is beyond me.

Supra, Skyline, S4, etc all make better power with a single turbo than two smaller turbos.

Not exactly. It's just cheaper to go single. It's been years since I've seen the car, but there was a rare twin setup for the MKIV Supra that make pretty crazy power and the torque band was pretty nice too. It's just a hell of a lot more work to get much the same goal (turbos aren't cheap, fitting all the piping, running all the lines, etc).


I've seen compound setups on Supras before. Never seen them really pushed to their limit though, was mostly done as a proof of concept.