[6pack] Get into my Head

[John Macartney]

Robert Lang wrote:
> There were a number of foundries that cast heads for Triumph. The foundries all used a different 
> casting mark (usually on the front of the head on the manifold side but under the valve cover).
> Circle B is a scrolly-looking B (like the B in Bentley) inside a circle.

And for the enquiring mind, the B code head came from Birmid Qualcast - just down the road by 300 
yards from Rolls Royce aero engines in Derby. Their other claim to fame was the manufacture of quite 
the most basic side-valve lawnmower engine I've ever encountered that inspite of its technological 
shortcomings, seems to defy age and goes on for ever.

Jonmac