I don't buy this theory at all. We are dealing with compressible flow here. I have a problem with this statement: The reason for this is that when the exhaust exits one side it then pushes the turbo that is feeding the opposite side since it has the intake valve open to fill the cylinder for the next compression stroke. This makes it sound as if the exhaust valve opening on one side of the engine drives that turbo and creates a pressure pulse to coincide with the intake valve opening on the opposite bank (I believe it was Greg that said something to this effect). It would be impossible to time the exhaust event on one bank to have ANY effect on the opposite bank because there is so much volume in the intake tract, MANY feet of piping, and the restriction of the IC's themselves that will easily dampen any pressure pulses if they were to exist. Due to the inertia of the turbo itself and the fact that the exhaust pulses at high engine rpm occur so rapidly, the exhaust will be felt by the turbo as a steady flow to the turbine (much like a pulse width modulated circuit) rather than individual pulses. Because of this, I have my doubts that any measureable pulses would be found at at the compressor outlet, let alone several feet away at the intake valve.
That's exactly what I was thinking when I read it. The valve timing explanation for side mount intercoolers makes no sense at all to me for the reaosns you just listed. I prefer the side mount intercoolers, but for other reasons... Henry
14:31:40 01/28/05
