Ok its not mine but my cars technical info, i have got 2gen rx-7 with fitted 12a engine with stock nikki carb which is not working and oil leak . I have rebuild for three times now i have changed all sealinf and aal ehat came into full rebuild kit from atkins rotarry and at second time i get over with engine i changed rotor housings for newer ones, old ones where totally dead and i did some porting for exhaust ports and how much it is posible a litle porting for intake ports but just litle. In third time engine was taken apart it had oil leak near oil filter in mane oil line, but after two time soldering it was taken to instute of metalurgy to fik it in a way how its need to be done. Now i need to get my weber carb from directcarbs and exhaust manifold. And then a litle metal work with rear differential so both wheels do the same thing and im good for getaway in Latvia. I have spend a lot money and time in fixing thing that you can buy new or allredy improved but i have gained practicall knowlegde and spend a lot of inteteresting time in my garage with my rotary engine. and i like him very much. Sorry for bad gramatic but english is not my native language i only hope that you can get the thought out of all this.