Hi All,



Planning the build of a 20B NA PP engine at the moment, but i'm pretty new to EFI systems so i'm not sure of what the fuel requirements will be. The engine will be Naturally Aspirated and Peripheral Ported, and will likely run a Haltech E11v2 (good old Aussie quality products!) with ignition running from a S5 CAS installed on the motor. I am aiming for around 500HP. The engine will be going into an FC RX7.



What size fuel pump would be required? What size injectors and how many of them would be needed? My thoughts would be that at least 2 x 1000cc injectors per rotor would be sufficient, but I guess it would be handy to have the ability to flow more even if you don't use it? Will I require a fuel surge tank?



Thanks for any help guys

 

i think the stock primaries, and maybe 720 secondaries would work, with maybe an FD or cosmo pump?



PP 20b should make 420ish hp, depending, and it doesnt need to be as rich as a turbo

 

Thanks mate, that gives me a great place to start