upfucd

well i posted this last night and it got deleted with all the other threads so here goes again..

there doesn't seem to be any threads on this forum that answer my specific question so i'm gonna post.

with my limited knowledge of how the rotory engine is designed it seems plausable that you can add rotors at will. like slap another one onto a 91 13b. am i making any sense here at all? i'm sure the computer would have to be upgraded, maybe to a cosmo puter but is this possible at all?

my friend is started up a performance shop and we are thinking of using my 91 vert as a little side project and i explained to him that i thought you could do what i described above. am i lying to him?

please edjumacate me.

thanks,

ryan

diabolical1

iTrader: (3)

when you say add rotors at will, do you mean create an engine with more than 2 rotors?

if that's what you mean, then Mazda and a few privateers already beat you to it. i've heard rumors of a 6 rotor engine (somewhere in England) - though i have never seen proof of it. i can confirm up to 4 rotors, and all you need to do is look up Mazda's Le Mans car to see it yourself ...

the concept seems easy enough, and at first glance you are absolutely correct in thinking you can add rotors/housings ad nauseum, but the truth of the matter is it's far from being that simple and you will eventually run into problems of physical limitations (the eccentric shaft necessary to turn all those rotors, and the tension bolts needed to hold it together) not to mention, the engines will be quite long - so what would you put them in?

does this help any?

protlewski

The 6-rotor engine was built by Hurley enginering
It doesn't say on the site but it is only a mock-up It doesn't run yet.

diabolical1

iTrader: (3)

cool ... thanks, protlewski

upfucd

well it kind of answers my question but what i really want to know is...

can i purchase another rotor housing and rotor and simply slap it in line with the original two that are already on the car?

from my understanding of the engine this is plausable. is it?

and then maybe use a cosmo 3rotor manifold and all the bolt ons or something like that.

thanks.

ryan

diabolical1

iTrader: (3)

no ~ it's not that simple.

you'd need the 20B e-shaft (or have someone make one), either way it's pretty expensive. also, the center housing is totally different. bottomline is you'd need 20B parts to build a 3-rotor engine.

protlewski

The e-shaft is the most critical part of the multi-rotor engine. you can't slap on another rotor or I would have at least three 4-rotors and a bunch of 20Bs but it isn't that way I wish it were. there are other things you must do and buy. True if you are building a 3 rotor 20B parts are what you need. now a 4-rotor I don't know. www.3rotor.com is building one to fit in their '94 cosmo.

BDoty311

3-rotor projects are usually rather expensive. But hey why not do it and prove us all wrong.

protlewski

Yes they are expensive but the motor is really one of the cheapest parts of the conversion. the engine will cost $2500-7500 depnding if its new or used. The conversions cost upwards of $20,000-40,000 from modifications and extra parts. Most of that is labor about 350-500 hours of work can be involved.

spaceman

What about the possibility of doing a four rotor by having two 13B's linked together inline. Didn't they do some crazy V8's like that back in the 60's or 70's?

If that's possible (or at least feasible), I've got two 13B's that are dying to try it.