O.K., I obviously had to replace the crank in this thing (after breaking the original killer-bee) and I used a standard reedie crank, cut the O.D. to .500" to duplicate the original, and cut .020" off the rod journal as I had done previously. I reassembled it with the Tee Dee .051 (sorry, I thought it was an .049, but it's not) cylinder and piston. I ran it as before with a 5.5-4 MAS prop, 35% Norvel fuel, and worked my way down to 1 gasket under a Norvel plug. It ran about 100 RPM less than the killer-bee piston and cylinder, and it had a TERRIBLE vibration. I assmued that I had missed something about the crank, but I switched it back to the killer-bee piston and cylinder and ran it again. It smoothed right out and ran as before at 18,300-18,400. From this, I will asume that either a .051 piston and rod are heavier than a standard .049, or the "new" killer bee piston and rod is still in some way lighter than a standard .049 reedie piston and rod.

I did get a chance to make a prop adapter for APC props, so just for kicks and giggles, I ran it with one"

APC 5.7-3, 35% Norvel fuel, 1 head gasket, 35% Norvel fuel = 19,800 RPM

I have no idea if this is good as I have never run this prop on anything before, so you guys will have to let me know. When running the APC, the engine reached a whole new level of smooth. When adjusting the needle, I couldn't hardly feel it running!!!

Wink