Do twin turbos preovide more power than single turbos.?

Question

I saw a 1200 hp at wheels supra with a twin turbo,
But I read that twin turbos just provide boost in more
rpm ranges instead of more power in one range.
Which one is it?

Answer 1

There are multiple ways to achieve a "twin turbo" setup. Some setups WILL provide more pwer, others will not.

A common set up for twin-turbos is a parallel setup, where you will have one turbo for each back of cylinders. This doesnt really provide any more horsepower, it just allows two smaller turbos to be used to create the same amount of "boost" while spooling up quicker because of thier reduced size. This is how you would typically turbo a v8.

The Toyota supra ran a different style of twin turbo. It had what was called a sequential turbo setup, which is typically on single bank engines like the I6 2JZ engine. Two different turbos are plumbed together. A smaller creates boost at lower RPM. When the engine speed increases, it pushes more exhause gas out, through the smaller turbo and into the larger turbo, and thus, power over a broader range. This system is slowly being replaced by VTG setups, meaning Variable Turbine Geometry. Diesel engines use these alot, and basically the turbine housing has a serious of blades in them which can be rotated. By doing so, they can increase the speed of the exhuast gasses at low RPM by restricting the flow (because there is so little anyway) and get the turbine up to speed. As the engine RPM rises and more gas needs to flow through, the blades in the housing can be opened enough to increase the flow through the turbo. Its complicated, but im sure there is information out there on this style of turbo.

They also have setups where you run two turbo chargers, so one turbo compresses air and another further compresses it. This creates ungodly amounts of boost, which yield cylinder pressures that are way to much for a normal engine, however can be used in High performance diesel engines. I have never actually seen one myself.

Jim

Answer 2

The answer for that question is really hard, I don't know how old is the car, didn't look under the hood @ the turbos and the intake settings, I don't even know what kind of an engine in it ???
so it can be anything it might be a tow stage twin turbos as on some Subaru's, or they might be a parallel controlled by westgates.
So who knows? I know that this is one hell of powerfull car, good luck finding out..

Answer 3

The turbos provide equal boost. However, wastegate settings can allow one to provide more than the other. Wastegate is simply a bypass, so the boost doesn't get to the intake. So you could have boost in different ranges by changing the wastegate settings, allowing equal boost to a certain rpm, then shutting one down. The wastegate is vacuum controlled, but these days electronic modules can control the turbo wastegates easily via vacuum modulation.

Answer 4

i recognize the Supra internals can cope with twin turbos without upgrading the gas injectors, gas line, pistons, and all that different stable stuff. So your automobile is quite lots made for that. outstanding automobile BTW

Answer 5

If the exhaust comes out of one side of the engine you need one turbo. (4 cylinder)

If exhaust comes out both sides of the engine (V-6, V-8) you need two turbos.

So, the answer is yes and no.

Answer 6

yes they do provide more power but in some cars are not reccomended

Answer 7

more ranges. also it will eat your gas up