single rotor, single turbo?
 

Rx8 renesis side plates and rotor,
Gslse housing,
Pte6262cea turbo,
E85
Is this setup driveable?


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Attachment 529785

Boost threshold and response would be similar to spooling at GT45 on a 13b I'd say. E85 should bring it on 10% or so earlier.

I think revving to 10k shouldn't be a problem, so that should leave plenty of power band,
I want to drop it in rx8 with stock flywheel up to 25psi with water injection,
Is the rx8 to heavy for it on stop and go?
Does anyone run a single rotor here?
I even thought of adding a small pte4854 to the 6262 compound turbo setup,
My goal is to gain economy with around 300whp.
Atkins has the single rotor kit, i wonder if its doable and if this is worth a try

cool idea. rx-8 would be horrible platform for this imo, too much weight. An 1-rotro FB would be awesome though

i had trouble finding a compressor map for the 6262 but it looks too big. you are going to probably need to size a smaller turbo for 300whp, but with more efficiency at a higher pressure ratio than normally used on a 13B.. and with a low surge line

I think the last mass[ish] production single rotor engine for a car was the KKM 502 in the NSU Wankel Spider...

fixed! i've seen a spider run (and owned one!) and everything since has gone 2 rotor for a reason...

If I was doing it myself I would run maybe a turbo size down (if you don't want to use all of the revs that your setup allows) in combination with a series flow screw compressor supercharger (with throttle differential diaphragm controlled bypass valve for the supercharger for throttle after blower operation and less idle/cruise load) geared to push something like 0.5 or 0.6 bar average by itself.

The more consistent VE of the screw compressor across it's operating range would mean when you open it up off idle it would probably make as much torque as a heavily ported 13B at low rpm anyway, and the engine size seen by the turbo for same rpm on spool would be similar to a 12A, but the excellent balance and minimal shaft flex characteristics of a single rotor give you a wider operating rev range.

If you are definitely going E85 I'd keep that size turbo and run ~35psi boost. Should give you over 400rwhp at the peak power revs your port area should allow.

EDIT: why go turbo on a renesis rotor? They are supposed to be weak as piss, if rotating assembly hasn't been balanced yet get an REW rotor.

^ twin screw would be great, however I would like to build this with parts I already have,
on the rx8 rotor I like the higher compression to give it little extra low end kick, plus want to push its limits boost wise to see how much will it take before starting knocking,
how ever I am planing to have the rotor machined to accept the older rotary 2m seals,
also I would love to have the secondary ports actuator working but it will be hard to figure out a way

"fixed! i've seen a spider run (and owned one!) and everything since has gone 2 rotor for a reason..."

I agree staying two rotor or going three is best, how ever I already own few two rotor cars and engines so I want to try something different.
I plan to have the rest of the rx8 completely stock except lighter wheels and maybe different r&p gearing.
If it does not work I figured I can use the single rotor on a go cart or some other project down the road

If you're blocking the side port exhaust (which you should), It'd be cool to run a Tial v-band hotside on something like a Garrett GT2871. The GT2871 flows 45# which is still good for ~345whp on a rotary. It'd look badass and make fabbing a manifold easier too.

How would you go about the e-shaft aspect?

I don't plan to block the side ports, 4 ports in 3 ports out, my pte6262cea has vband in and out

Atkins has single rotor parts,
I just cant find much info on them running