Underneath the car, rear mounted turbo kit?

[pupsi]

Was browsing on the internet and came across this:

http://www.chevyhiperformance.com/techarticles/148_0502_rear_mounted_turbo/index.html

After reading and thinking about it, it does seem like a very good idea.

Would like other peoples views and opinions, pros and cons.

Would like to do one of these myself this summer, dont know on what car yet.
It seems suitable for most big engine cars as long as it is done properly?

 

[rf065]

When you compress a gas & push it along any pipe, you lose pressure as the length increases. This system would appear to be the most inefficient turbo set up I have ever seen. I cannot see anyone getting more MPG either, as it claims. Even using the length of the inlet tube, underneath the car as a means of cooling the air cannot be as efficient as a proper intercooler. Due to the volume of air in the system, I would imagine the turbo lag is horrendous. I would need a lot more convincing before I bought one anyway.

Russ

 

[grober]

Immaculate But Flawed.

Yeah placing a component which can glow red hot in use just beside the main fuel tank does seem like a good idea. You got to admire the Yanks for their dedication to "HOME ENGINEERING" projects which are beautifully executed, but the engineering fundamentals on this one are flawed I'm afraid.

 

[Dieselman]

Yeah placing a component which can glow red hot in use just beside the main fuel tank does seem like a good idea. You got to admire the Yanks for their dedication to "HOME ENGINEERING" projects which are beautifully executed, but the engineering fundamentals on this one are flawed I'm afraid.

They are but not for the reason you are suggesting.

A red hot turbo can't set fire to petrol as petrol needs a spark to ignite it.

Additionally the turbo on this car runs much cooler due tot he placement of it away from the engine.......
...and this is the flawed part of the setup.

A turbo works on the principle of the gas hitting the turbine being hotter so more expanded than the gas it's compressing in the compressor turbine.

The further away from the source the turbo is mounted, the less work it will do.
The company says this turbo only gets to 550F. This is about 800F less than normal.

As the Yanks would say...Do the math.

 

[bolide]

Despite all that it does look like a better idea than trying to shoehorn a pair of turbos into the engine bay of a W124

Probably still a mistake, though, when you could use a supercharger instead...

Nick Froome
www.w124.co.uk

 

[grober]

The red hot bit was just me being a smart a**e, but the engineering fundamentals I referred to, were all to do with the long pipework involved and the subsequent affect on the efficiency of the setup. Sorry if that wasn't clear.

 

[Bobby Dazzler]

First time I read about the rear turbo conversations I thought it was a bizarre idea. A US C32 AMG tuner is developing a twin turbo kit for the C32 and looked at rear mounted set-ups. In fact they even installed them.

They reported that the lag wasn't that bad, although everything I know tells me it should be awful!! That said I'm an armchair engineer, not a real one with any real experience, so I'll go with what they say for now.

They've now switched to a front mounted set-up, as it's the better solution - just a heap more work trying to squeeze them into the engine bay - it's already quite full in there!!