http://www.ststurbo.com/

Check that out. Tell me what you think. saw it on speed chanel they put twin turbo setup on a vett... really pretty interesting.

 

Hhhmm they don't make one for my 03 Windstar....PFfftt that's weak!!!

 

I know.. i know, windstar and geo metro arnt on there but they do sell a universal kit.

 

wtf? its like a turbo exhaust system with a turbo in the exhaust... looks very weird. but how does it work?

 

I think they just mount the turbo's in the rear because they don't have room under the hood.

 

This is kinda old but still interesting. The lag on that system must be horrible, I would only put that on a car with alot of low end or something like a daily driver where you dont really care about competitive performance. Thats just me though.

If you are interested in this i suggest you try getting a similar system made up before you spend an outragouse ammount of money on exhaust pipes.

 

I hate telling people to 'search' because I like fresh conversation, but this one is pretty old and a lot of the technical stuff has been discussed very thoroughly. I'd find that old thread and bring it back. But those system are suprisingly successful.

 

i saw this on a corvette on the speed channel..... its supposed to be better because theres less heat under the hood....

 

IC + passive cooling of the charge pipes being under the car was giving them 97% efficiency on lower boost levels. Not too bad.

Surprising little lag, not much more than if they were under the hood.

 

yeah, definately not new

 

This has been covered before, but not for a long time...

Whenever this comes up, the issue of lag is always the most basic question. There's no arguing whether this system works: it does. However, the real question is "how well?".

PowerBlock on SpikeTV is sponsored by these guys so they just recently did an install on a newer Corvette. They tried to downplay lag during the on-road test but you could clearly hear that in 1st gear, there was little spool until 5000 RPM or so. And on the dyno they had to power-brake 2nd gear to keep the boost up. To me, this means significant lag.

I did some digging a while ago on the Corvette forums to see how these systems work in the long run and everyone is very defensive about lag, claiming it doesn't exist. Yet most people say things like "the turbos really come on strong midway through 2nd gear!". Again, to me, this means they lag a LOT.

Another thing I find interesting is that all these kits are for big V8s. These are engines that already have plenty of low end grunt so even if they turbos are very laggy, the system probably works in an acceptable way.

Seems like a good option for vehicles with big engines and small engine bays, but here in RX-7 land we have plenty of engine bay space to mount some pretty massive turbochargers.

 

yeh the sts is a good idea on cars that would otherwise be very difficult and expensive to turbocharge. I had considered getting one for my 93z28 I used to have, but I ended up just selling it and geting my talon, a true turbocharged monster.

 

Sorry, i didnt even try and search... the way it looked on the speed chanel and their website it looked reletivly new. lol


I think the advantage to this is you could have your car reletivly stock looking and have hidden turbos. imagine, cop pulls you over from hearing your bov, pops your hood no turbos... what?

 

It works just like any other turbo system except that the turbo is mounted at the end of the exhaust pipe rather than at the beginning.

As far as I know, the first large-scale application of this design was the P-47 fighter plane. It had the turbocharger mounted about 20 feet behind the front of the engine. In the pictures in the below link, the turbo is labeled as a "supercharger" because a turbo is technically a type of supercharger.
http://www.rwebs.net/avhistory/history/supercha.htm

Less heat under the hood = ricer bullshit. Unless the air intake is horribly positioned to suck in hot air (many Hondas do this but not the RX-7), or unless the under-hood components are getting damaged by intense heat, there is no advantage whatsoever to lowering the under-hood temperatures.

These kits seem to be marketed to compete with low-boost centrifugal supercharger kits. These kits may have a lot of lag and reduced throttle response, but compared to the centrifugal supercharger's shallow boost profile, the STS may actually offer a slightly better torque curve. Also, if you figure that boost = lag, then the best way to reduce lag is to keep boost down to 5psi, which seems to be their marketing strategy. The only real advantage I see in these kits is that they appear to be very simple to install and uninstall.

 

Dez White of the Atlanta Falcons came into the shop a few weeks back and he has this set up on his C5 vette. It didn't really blow my skirt up and the car really didn't roll as fast as you'd think. It is kinda flashy to have the turbos hangin off the rear, but in the end the car wasn't that much faster than before.

 

how easy this would be for a thief.

 

Where did you get this number from?