New 20b intake plenum and runners

RX-Heven · 01-08-2011, 03:53 PM

What throttle body will you be using?

gmonsen · 01-08-2011, 04:08 PM

Thanks, Brian. Its a lot of fun. Not sure on the injectors once this is on. Its a lot more (4x) air. I was running out of air beginning at around 5500 rpm, not fuel. So, we'll have to see.

Rx-heven... Love your build. Still thinking about following in your footsteps. Almost did it some years ago. As to the TB, its a modified and extrude-honed Rotary-Works 90mm 20b throttle body. (They also make a 90mm 13b version.) I am wondering if that is sufficient for my power curve goals, but won't know till its all back together. As Logan's work shows, there's a lot of experimenting and new stuff to be done in NA. We're only just getting into it and yet there are now a bunch (10-15) of street NA 20b's making 425-475 whp.

Gordon

01-08-2011, 03:53 PM	#1
RX-Heven The Newbie Join Date: Feb 2008 Posts: 20 Rep Power: 0	What throttle body will you be using? __________________ -Dave 20b RCR Superlite Coupe 91 Widebody Turbo Vert...RIP

01-08-2011, 04:08 PM	#2
gmonsen The Ancient One Join Date: Mar 2008 Location: Eastern Pennsylvania Posts: 144 Rep Power: 18	Thanks, Brian. Its a lot of fun. Not sure on the injectors once this is on. Its a lot more (4x) air. I was running out of air beginning at around 5500 rpm, not fuel. So, we'll have to see. Rx-heven... Love your build. Still thinking about following in your footsteps. Almost did it some years ago. As to the TB, its a modified and extrude-honed Rotary-Works 90mm 20b throttle body. (They also make a 90mm 13b version.) I am wondering if that is sufficient for my power curve goals, but won't know till its all back together. As Logan's work shows, there's a lot of experimenting and new stuff to be done in NA. We're only just getting into it and yet there are now a bunch (10-15) of street NA 20b's making 425-475 whp. Gordon __________________ 1993 Rx7 R1 20b NA 1994 Rx7 20b supercharged project 1991 BMW 850 6 speed 1991 BMW E30 M3 Evo II