I know most people say that it's just easier to turbo their car but i think it would be pretty damn cool to be racing a car and from a lower RPM hear a "wheeeeee" whine from a Supercharger and then the hissss of a turbo followed by the BOV and then all over again lol. has anybody on this forum done this kind of setup? i've seen it done before but wasn't sure if it was very effecient or even logical lol.

 

ummmm....[sm=headbang.gif]

 

hell of an explination there buddy.

 

efficient - no, logical - no, cheap - no....hella cool - hell yea, I've seen it done on an lancia and an Evo and it is mad cool. ALthough don't even say that you'll attempt it cause I'll NEVER believe it...until I see a project thread and I can drop into your garage and look at it

 

is this an attemtn at reverse psychology? lol other than addition of the supercharger (which you can get a used kit for a grand or so) it really wouldn't be that expensive.

 

apparently you haven't done your research...for one, you can't just use a JRSC...well technically you can, but it'll run so hot it won't be anywhere near safe and efficient. You'll need something that is not an integral prt of the intake manifold. Second, you wouldn't want the turbo and the supercharger mounted in sequence because you'll be multiplying boost numbers while creating tons of heat. You'll want some sort of an arrangement where the supercharger works down low and starts venting to the atmosphere at a certain RPM and the turbo taking over in the RPM range where it is fully spooled. Can you imagine the costof dyno time just to make this thing run properly and the amount of time it'll take you to fabricate and make the changeover Y-pipe operate at just the correct pressure? It's not impossible and it is not an attempt at reverse psychology...it's just easier to get the same power/acceleration dynamics goals by using a combination of nitrous and a turbo over a combination of a supercharger/turbo

 

This is really common in the MINI community. They definitely have to be mounted in series you don't want the supercharger trying to push the turbo backwards or visa versa, that's very inefficient. Also, you could use a JRSC, as long as you intercooled the turbo outlet, but I wouldn't recomend it. The supercharger on the MINI works just like the JRSC in the sense that the throttle body is before the blower.

It's a very good way to add power to a car that's already supercharged but for a NA engine, just turbo and you'll be happier. The TC'ed MINIs make around 300-350 whp but a turbo only car on the same boost will make 450-500 whp.

 

Adam, I didn't mean the supercharger and the turbo running at the same time into the same plenum. And with the JRSC wouldn't you be pushing it? It's already making too much heat. And I believe the cooper S bottom end is much stronger than a stockD-series, so on that you actually could run that much pressure with them mounted in sequence

 

I've seen it done ona efw show cars, it looks really cool but I'm not sure how well it works. I think it would be best to have both flowing into a single source. Like, having a turbo and centrifugal supercharger flowing into the same intercooler via a y-pipe

 

Well actually the boost doesn't add up, the supercharger will pull air throught the turbo at first but after that the supercharger isn't adding anything... the flow the turbo produces just goes right through the supercharger. Adding the turbo just makes it more efficient. Supercharged, twin, and turbo MINIs all run 15-20 psi but they run about 200, 300 and 400 whp respectively.

As far as heat goes, I wouldn't be too worried about it if the turbo was intercooled. Of course, it would be better to runsome other supercharger and intercool after that but it won't hurt anything, just won't make as much power.