In for teh win. Falco mentioned this in another thread many moons ago, I'm hoping this is for the reals?

Yeah, more or less. I want to take the great efficiency that the Rotrex has in the upper RPMS and keep that as is. Adding a turbo to feed into the Rotrex. Thinking of running a big wastegate with it's vaccum source off the manifold for 20PSI or so. At lower RPMs the turbo would be boosting more, and lowering as the Rotrex comes into it's own. The large wastegate should be enough to keep the flow without choking the motor at the small turbine housing...


Anyways... this is still all int he planning stages and I have to figure out packing as well. Bottom mount but I don't know where to put the wastegate.

Lol, yeah I did. I've been living in Germany for the last 7 months and am heading home this Monday. I am itching to get wrenching on something again and since the motor and Rotrex stuff is all done I need to think outside the box.

Right now though, I'm just trying to think of how much boost the motor can really take. 20PSI? 25PSI? Who knows... Crank it up and see? Lol...

If you decide you want something bigger than that C30-94, I may know someone that's interested in your old one.

Its built. Number of "PSI" is irrelevent. What is relevant is correct setup and tuning.

You can have the wastegate on top of the turbo if you're going bottom mount.

The torque curve shape should be interesting to see on a 1.6. I'm predicting an LSx replica.

Haha, if anything I may go down to a 74. Right now the Rotrex is pushing 16PSI at 8k and with a turbo, even pushing only 5psi it would make 26-27psi at the motor which is a bit out of my comfort zone. We'll see I might just put a bigger pully on it and gear it down a bit.

https://www.miataturbo.net/attachmen...ine=1332970130

I sense a pending trade in your future...

Yeah, but there is the inlet to the Rotrex. It can't be completely blocked I need a bit of space to make piping from the exit of the turbo to the inlet of the Rotrex. And the wastegate needs to be placed where I can still route it back into the exhaust. I'm getting old and atmosphere dumped gates are no longer something I want... haha.

Going to take some measurements and see what Abe can come up with. If anything I doubt this being completed for a few months so don't get all excited just yet guys! :P

Oh and I need a job first... haha

Your engine bay will look like a plate of spagetti

Yeah pretty much.

For reference, what it "kind of" looks like right now, sans piping.

https://www.miataturbo.net/attachmen...ine=1332970750

4th Reich?

A turbo for low RPM, and a supercharger for high RPM is really going to confuse the super/failcharger crew. You should get a couple 60mm TiAL wastegates.

What about having the compressor feed directly into the mouth of the rotrex?

...but then you might have supercharger surge ( LOLWAT)

Why not just run a turbonator?

^^ Thats kind of the plan, but there will be a blow off valve of some sort in there.

And Hustler, you know me... all about making people go "why the hell did he do that?"...

c'mon who else spends a ludicrous amount of money building a 1.6L motor then putting a Rotrex on it?

people that wished they drove a honda

So I can put some boost in my boost, so I boost while I boost.

http://t2.gstatic.com/images?q=tbn:A...S8WvSKuCf1GnzQ

I hate Hondas.

yet you replicated their power and torque curvehttps://www.miataturbo.net/attachmen...ine=1332971324

In a RWD, light and much better chassis.

hehe, look what I found. C30-74 w/ Holset HX40. 4AGE