Turbo Twos

[FreshMar at aol.com]

   From what I understand, two-strokes exhaust out one port half way down 
the power stroke, then uncover the intake port farther down, letting in 
the crankase- pressurised air, sworling in the opposite direction. The 
flammable intake mixture stays out of the exhaust's way by the tuning of 
the intake and exhaust ports (?). And the idea is to pressurize the 
intake via turbo- or super- charging. My input/question is, would smaller 
ports, meaning shorter in stroke, nearer to the bottom dead center of the 
cylender do the trick? This would let the intake and exhaust interact for 
less <time>, perhaps leading to less intake going out the exhaust. The 
intake would need less time to fill the cylender, being more pressurized, 
and the exhaust I suspect would be more pressurized as well. One problem 
is of course is the less complete evacuation of exhaust gas near top of 
cylender...
    Idea 2; Turbocharging itself does not seem to suit this set-up, the 
turbo would have to lag, and in doing so, it could only gain speed to 
pressurize next stroke, delaying. What if you had a two cylender 2-stroke 
twin turbo? Forgive me if this is old hat. Ultralight turbos could be 
spun on #1's exhaust, pressurizeing the intake in #2's crankcase, which 
is at its top, making available power 1/2 crank turn later. Ahh the bliss 
of ignorance.
     

Mario T.
mailto:Freshmar at aol.com-----'76 VW Camper FI A/T,,'79 Fiat X1/9