RE: West .50V1 bench run
MJD, that sums it up pretty good. No engine that will sit and idle all day can have the same performance potential as a pure racing engine unless it comes with timed fuel injection, close loop controlled. Some guy did a pretty exhaustive study of all the production engines to see which ones had the widest speed range and most power to weight...I think it was published 15-20 years ago in one of the mags. IIRC, the Webra .50 was in the top 3 or 4