IFsledder
Newbie
I've been wondering this for a while. When it is stated that a turbo runs at or is set at 8 psi of boost what exactly does this mean? I guess what I'm asking is, where is the pressure 8psi? Just downstream of the turbo fan, just before the carbs, where? Also, I understand that there is a certain rpm that must be reached before any boost pressure or positive pressure is generated. After 8 psi is reached, does the pressure hold at 8 psi as the rpm of the engine continues to increase or is the stated boost pressure only at a certain rpm. My guess is that the stated boost is at the desired max rpm of the engine, I believe that's about 10,200 for the RX-1 motor. Any info on this topic would be appreciated.
peteracing
Expert
boost pressure
boost pressure is usually not the same just after compressor ''fan''
and at carb mouth(plenum) there is always a pressure drop thru the
aftercooler so wen we talk of ''8 psi boost'' it is the carb. mouth press.
depending on the turbo matching, the boost starts to build around
low-mid. rpm, to rapidly raise to max boost an then is controled
(held) to 8 psi by boost controler & wastegate.
boost pressure is usually not the same just after compressor ''fan''
and at carb mouth(plenum) there is always a pressure drop thru the
aftercooler so wen we talk of ''8 psi boost'' it is the carb. mouth press.
depending on the turbo matching, the boost starts to build around
low-mid. rpm, to rapidly raise to max boost an then is controled
(held) to 8 psi by boost controler & wastegate.
