Norton Dominator 88, 99, Model 7 Ali cylinder head T2225 cast number

Norton Dominator 88, 99, Model 7 Ali cylinder head T2225 cast number

The cast number is T2225.

Norton Model 7 and early Featherbed 88 Dominator, Model 99 Aluminium cylinder head.
Apparently, T2225 cast number preceded 22707 (which I also have available)
T2225 moulding numbers were on heads that were first available as Special Order in 1953 for 88 and 99 Dominators. They then became fitted as standard until around 1957, when the mould cast number changed to 22707. 22707 can be easily identified by the additional vertical fins between the exhaust ports.

Norton Ali cylinder head needing a good clean up.
Fins: One small chip on a lower fin as seen in the images.

#2