Likely not. Velocity preservation and pumping losses are the name of the game here. Waves come from lengths.rgava wrote: ↑07 Apr 2022, 18:21I'm not thinking in the ICE (I already know that this does not work on a 4T engine). But perhaps can be beneficial for the turbine to tune the waves on the runners.Hoffman900 wrote: ↑07 Apr 2022, 16:08I doubt it's any of this and I suspect it's either the heat wrap cladding giving that illusion or the tubes transition to oval, but maintain the same area, to get the body work tighter.
2 stroke expansion chambers don't work on 4 strokes.
In regards to velocity, you can never gain it back to the level it was. I believe it’s the cladding (which hides the tubing) or as I said, oval primaries of the same area as a round tube for aero reasons.