am looking for some help on planing a 350-500Hp N/A 20B for a FC. any links to some good info would be great. thanks

 

350 hp alone is a huge feat. 500 will take some real talent. heres some examples of some n/a 20b's so you can see what it takes to make these numbers.
https://www.rx7club.com/20b-forum-95/my-rx-7-done-cup-holders-3-rotor-semi-p-port-n-setup-stock-subframe-454580/
https://www.rx7club.com/20b-forum-95/my-new-n-side-port-20b-fc-460102/
https://www.rx7club.com/20b-forum-95/fs-20bna-rx-7-295-rwhp-575576/

 

Nitrous or get ready for a peripheral port....

Dunno if anyone has tried nitromethane N/A 20Bs.

At any rate it will take some fairly serious revs and a very good tune. You're gonna push your spark timing to the limit...

 

If you're keeping with mild porting, then you need to throw away the stock intake manifolds...

That gets expensive.
Almost the same costs as going turbo.


-Ted

 

Sounds like pipe dreams but yeah getting that amount of HP will come at the bitter cost of streetability, especially if you aren't using nitrous.

 

I've been wanting to try a nitrous N/A rotary engine. Of course, the extra torque and power of the 20B obviously makes it the preferred engine but I'm not rich...