All this talk of additional power coupled with an easier intake design has me thinking I should probably go this direction with my Renesis. It’s still on the stand after rebuild.
I haven’t constructed the manifold yet anyway.
I assume fuel flow will be higher than normal?
Higher than a similar piston engine of the same HP. Slightly higher. About.666 the devils own fuel consumption at full throttle best power. Looking for F/A in the 12s, and EGT under 1650 degrees.
However the rotary can run well far lean of peak EGT. Even further with a high powered ignition system. The piston engines cannot.
Is slide throttle best option?
I never understood what problem the slide throttle was supposed to cure. Powersport had a butterfly right on the rotor housing to cure a poor idle. Our Pports didn't like to idle at street car RPM (650 RPM) but did well at 1,100 RPM, and sounded fine. That with a 48 IDA Weber with 44MM chokes.
Only an unported (stock) Renesis has no overlap. Peripheral porting a Renesis would get you some overlap, but nothing like Peripheral porting a side port rotor housing where you have two peripheral ports together..
On this dyno sheet there are readings at as low an RPM as I have seen. This is a racing 12-A by Daryl Drummond. Best power at 9,400 RPM and 244.7 HP on 36 MM chokes.
Look at the F/A and EGTs. Note the effort to keep the oil temps down to 160 degrees.
This is a Bridgeported side port engine. The 13B would have more everywhere just from more displacement. Injected maybe 5% more. A Periphery port maybe 10% more.
Lynn E. Hanover
Need to search archives I guess.
Good info Lynn, Thanks
Bryan
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