Just wondering if anyone converted Cosmo 20B to N/A 20B.

I just picked up my 2nd 20B and the idea came about between me and my builder.
Using 2nd gen N/A rotors and go carb'd.

Maybe 350 at the wheels N/A??

Thoughts and ideas??

 

What type of port?

 

here is one that has Individual Throttle Bodies instead of carbs, but its a monster...

470rwhp FC 3 rotor PP NA

 

more pics... from 87GTR on teamfc3s.org

 

strangely enough here is another 20B at the same 470 hp mark.. not a streetcar though, but ITS SICK!!!!!
http://cgi.ebay.com/ebaymotors/ws/eB...sPageName=WDVW

 

My 20B will be NA. It's a pre letter series so it made sense. I can get it running for a lot cheaper and the overall engine weight is less. Plus I had no room for the stock twins.

I may do some sort of single turbo later, but I plan to break the rear end before upgrading engine power.

 

[QUOTE=herblenny]Just wondering if anyone converted Cosmo 20B to N/A 20B.

I just picked up my 2nd 20B and the idea came about between me and my builder.
Using 2nd gen N/A rotors and go carb'd.

Maybe 350 at the wheels N/A??

Thoughts and ideas??[/QUOTE

With side ports ?, depends Intake Manifolding & Porting.
W/ OEM Intake, & TB. 270 Maybe at Flywheel. That +/- 230 at wheels.
With Very "Free Breathing" Porting, Individual Throtle bodies, & Dedicated Intake, and "Tuned Exhaust" a best of +/- 330 Hp at the Flywheel., If you get it "ALL right "!

Have a 20b PP. engine in my race car.
Makes over 500 Hp. at Fly Wheel on engine Dyno.
Don't know what it gets to the grownd, but its beat V-8's all day long. 03' Series Class Campion, Florida.
Run's SCCA GT-1. Only Rotary in the country running (none V-8) in National series.
go to: http://img.photobucket.com/albums/v112/GT1-20b/
2 pictures of engine. One on Dyno, one on engine stand.

Can provide specs if interested.

GT1-20b

 

Very nice engines you have there! Have you some info at what rpm the 20B makes peak hp and torque? Do you use D-shaped or rectangular inlet ports? At last could you provide some info on the port timing on your 20B? You could PM me if you want. Thanks in advance! /Lars

 

RE Amemiya has a 20B NA that is streetported sideport and I believe it dynoed 360ps. I will check on that.

It has a short runner individual tripple throttle body intake makes it look just like a P-port from the top or combustion side, but I have a Japanese RX-7 magazine that shows the intake/exhaust side and it is sideport!