20B N/A with RX8 rotors??

[dregg100]

updates?

[RX8Ualiv]

has anyone looked at the rotary in the mazda furai prototype? it has a
renesis based R20b, which means that it has multiside ports, a more
powerful coil setup, high compression renesis rotors, and is N/A.
it produces 450 whp on E100 ethanol, but will run on good premium fuel
like shell v-power 93 octane. Racing Beat developed the motor under
cooperation with Mazda Motorsports, and i would like to get more
technical specs. i do know that the e-shaft and rotor assembly is
lightened and computer balanced and has what we could call a
stage 2 street/race port job, and a sprocket drive setup
with a better high flow oil pump and aluminum rotor housings
to replace the ones that are cast iron, which is lighter and
dissipates heat more efficiently, ceramic apex seals, and only consumes
half of the oil of the earlier 20b.
if anyone knows anything more please add to this thread, as i would
like to find out the exact specs as i intend do install this with a T56
6-speed and a l99-00 vette differential with a custom track bar, custom rear
trailing arms and custom a-arms.

[RETed]

You're asking about an engine in a prototype vehicle...?
Uh, good luck.


-Ted

[gmonsen]

As Herblenny knows, I have an FD powered by a 20b NA using high compression Rx8 rotors, monster street port, custom headers, ignition, with rotating assembly balanced to 10,000 rpm. It was making around 360-365 WHP in early runs. I haven't played with it at all over the winter, but will be tuning it this spring. I don't think it can do better than maybe 375 even at 9,500-10,000, if it can even get enough air there. (But it sounds great at those rpm's...)

The power is just fine, as this setup was developed for linear power, instant response, big low down torque, reliability, and great sound.

Gordon