I guess that Castrol-R comment brought back lots of memories. I have it on good info that there will be another BSA B50 running at BMST - - using Castrol-R as a Lubricant. But it won't be the same as the bean oil in the gas.
If its any consolation KK this was the result of my last trip to El Mirage. Parts on the way.
Nortonist,
That's definitely consoling! Did that ruin your head as well? At least I did it 3 weeks before the event and am now in the process (slowly) of rebuilding. I had wondered whether your Westlake was a four valver on not. Looks like four. And I bet parts for the Westlake are a lot more dear than the BSA parts. The hardest parts to get for the B50 are the cases, but luckily, I had a spare set.
Did Alp loan you some of his magic fuel, or did you get the blower working?
Remember those .5cc Cox model airplane engines? That was a nitro/bean oil mix we used.
My Dad built a model speed boat with one of those motors and I remember the smell.
That brings back some memories! 
My first trip to B'ville in 1970 was with two friends racing a BSA 650 and a Bridgestone 350! Good combo: BS & BSA! 
Looks like we have some common history! 
BSA and BS: Bastard Stopped Again and Bull Sh*t!
Tom
