Originally Posted by
cozmeister
No.
The vacuum from the inlet stroke pulls air into the inlet manifold keeping the engine running.
Also, you need something pretty hefty to stall an engine due to flywheel inertia.
And the phenomenon known as 'chatter' is correctly referred to as compressor or turbine stall, because the compressor wheel is forced to stall due to the turbulent air in front of the throttle plate going back the way it came because it has nowhere else to go.
Correct
No.
The very nature of a turbocharger dictates that lag will always be present without something to combat it.
By stalling the compressor wheel, the turbine wheel is also stalled - it doesn't stop completely, it reverses direction many times (which causes the chattering sound) due to turbulence on the compressor side and exhaust gas flow on the turbine side, until it can continue spinning in the right direction again.
By stalling the turbine, you're effectively making more work for yourself - if the compressed air can escape, the turbine won't stall, and therefore continues spinning in the right direction.
Debate is healthy
Ok maybe I exaggerated a bit when I said stall the engine
lol
But it would really build up back pressure in the head stifling the engine and restricting the flow of fresh gasses in.
I have never heard of the turbo reversing direction several times, is there any actual proof of this? If so all well and good, I didint realise.... but IMO it seems unlikely
There will always be lag of course but the amount can be increased or decreased.