ORIGINAL: turbo.gst
Sport_Pilot is correct. Peter Biles designed the HP 61 and then the Webra Speed (1024). Both are wonderful engines. There is not enough difference in performance to matter. I 'm not sure about other engines in the series. I am still bummed about Webra's demise.
I loved my 1024 (Webra .61 Dykes ringed) and wish that I still had it today. What a wonderful, easy-going, screamer of an engine.
Ed Cregger