Originally Posted by
DeanFHobart
The A Stock Hydro Kilo Record I set in 1974 was 60.884 mph....... One way at 61.8. My motor was a KG4, Serial No. 506879, and totally stock..... No Blueprinting and No Squished Block. I still have this motor... Green Gas Tank and Bottom Cowl and all...... Bendix Mag, by the way. I had always heard that the KG4 was about 15 - 16 HP. The olny thing that was done to this motor was to re-build it with pistons, rings (2 dead ones), bearings, seals, put in a sand cast reed cage, .010" (thin) reeds, and the Bendix Mag. It was fast right away. I ran it for at least 10 years, only putting on new top rings. After it wore out, I started to run a Mark 15.