Video showing the difference in turbulence from a unmodified and a modified input port. Engine is a Renault Dauphine Gordini. First two parts are unmodified and last clip in the video is after modification. Flow is improved considerable but I have no figures. Recent measurement shows 60,3 hp and almost flat torque curve from 2500 rpm.
renault, dauphine, gordini, porting, hillclimb, flow, tuning