Well hi all
Just thought I'd throw out there the mods I,ve done to the renises in an rv7'.
Well the p ported engine is now back in the plane and running well, over the standard short manifold that was originally in the plane I have gained around 400 static rpm, same prop and gearbox combo, 2.85 ratio, this equates to allot more hp at takeoff, just shy of 2300 prop rpm, I'm running a prince p tip prop at 68" x 86" pitch,
At 8000 ft it is turning 7000 at 180 mph tas which is an improvement of 25 mph on previous tests, . So next plan is bigger prop and less pitch to let it rev to 7500 in strait and level.

Cheers
Christian
Rv7 renises Aus


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