Thread: Remote Turbo's?

I would say going back to my turbo petrol cars, the exhaust gas speed would be much lower by the rear of the exhaust. The turbo is spun by exhasut gasses and the slower they are, the slower the turbo will spin. 7psi is pretty low though, and when its strapped to a 7litre v8 it may not be such an issue.

Bearing in mind we got 30bhp, and much quicker pick up from just swapping from the cast manifold to an equal length tubular on my Integrale.

The other basic engineering issues I can think of include, the water cooling, and the oil feed for them.

The really long inlet tract may not be such an issue as things like the WRC mistshubishi evo rally cars have very long piping to the tintercooler and so on.

advantages as they say would be lower under bonnet temperatures.

an interesting, but strange idea in my opinion.

I would say the only benefit is a less cluttered engine bay.

The drawbacks would be that you loose energy everywhere. Heat is lost in the exhaust piping from the engine to the turbo which means that less energy is delivered to it because as the gas cools, it becomes more dense and therefore you have a lower gas velocity. After that, you loose energy in all the high pressure inake piping that is needed to get the compressed air back to the front. Also, you need to have looong oil lines from the engine to the turbos, unless they have their own independent oil system.

And I would suppose that the tubros will talke a little longer to warm up (not 100% sure if it would be noticeable) due to slightly cooler exhaust gas and there being a lot of oil in the system.

This is fairly comon. Needs less space in the engine bay so you can fit bigger turbo's. Turbos don't get as hot so can last longer and don't cook the engine bay.
Down side as I can see it is less pressure so less boost and as said seperate oil system or very long oil lines. You would also expect quite a bit of lag.

Originally Posted by George130

This is fairly comon. Needs less space in the engine bay so you can fit bigger turbo's. Turbos don't get as hot so can last longer and don't cook the engine bay.
Down side as I can see it is less pressure so less boost and as said seperate oil system or very long oil lines. You would also expect quite a bit of lag.

Bang on,

Only thing is as the Gas cools its Volume decreases. But mass will not. As it is it quite difficult to convert velocity into pressure, and centrifugal turbines are far from the best at doing this ( as are tunnel rams etc) maybe remote turbo will lead to coaxcel units. Boosted at 30+ bar anyone?

possibly a free flowing manifold may negate some of the lag issues, the long return pipe work I would imagine could remove the need for a intercooler.

As an idea may be mounting a turbo in\on the winch bar? Or may be the roof? or maybe not. At least I could keep my Air con

I have a couple of turbos that i will be doing similar to my Defender buggy. The motor is already 1/2 a metre further back than normal, and the turbos will sit just behind the ute cab, so the run wont be as long as that Vette.

There is a great site which explains all about how to do it on the cheap junkyard turbos or somthing, it is a really good read and has a breakdown on the costs and power increase figures.

Andy

You have to look at it as you fit a turbo that is suited to the job at hand.

You need to make 7PsI not 20 so you would build turbos which would do that with the exaust air flow you have.

The other advantages........your golf clubs are nice and warm when you take them from the boot and you have a good reason why not to buy icecream for the kids when you go shopping....

Just another gimick so people have something else to say their car has...."Oh yeah well mine has remote turbo's....Ha"....

It's just a big engine and little boost but I dare say would kick **** pretty well

Have a look at photos of Lockheed P38 Lightnings. The turbos are mounted well down the booms from the Allisons. These were designed in 1938.

I'm concerned about thermal shock on water crossings with some recent model 4x4 that mount the turbo low in the engine bay. That would also concern me with remote mounts when low.