IV-Rotor Build: 12 plugs/ 9 bearings/ 8 ports = 1 monster by GtoRx7

2 minute(s) of a 22 minute read

20b turbo's are in a league of their own. After building and driving quite a few at 600-750rwhp that rush when the turbo hits always leaves you feeling like a time warp just occurred. And afterward I always feel a tad irresponsible because even as a moderate driver, you wonder if everything was truly under control lol. The average 20b turbo car weighs between 2900-3100 depending on transmission choices and will keep up with any "new" heavy cars of today with 850+rwhp @ 3400lbs. 

Then you have my crazy *** putting a 4-rotor into a 2370lbs chassis. If it breaches 600+rwhp it would take a 3400lb car making near 1000rwhp to go head to head. 

Gotta love our lightweight Rx7's 

8-18-2013

So I did sneak out for 3 hours and put the 4-rotor on the dyno just for some drivability tuning. Cell phone sound capture, forgot the go-pro  Slide throttles and mega overlap made a street tune a bit difficult. Nothing crazy guys just some little runs!! I will disclose that it made 230 ft-lbs at 2500 rpms.... yeah. No power tuning, no miles. And this engine wont even get out of bed until 6k