Like I offered that here in the US/Canada is claimed to have gotten 50% of world production of commandos. Here from the 80's they have been known and referred to, as combat cases and combat breathers. (not by newbee's)
Improved oil scavenging and breathing"
Some of us consider this to be a cruel joke!
Out of over 1600 posts, I may have actually asked a question a dozen times.
Here's a question for NOC researchers or ANIL the "keeper of the records" or truth......I'm sure I will NOT be coming to England to look at company documents. But thanks for the invite.
According to Bacon(RIP) book, the combat tune was offered as early as 1970. He told me most of his research was mostly records and of Brit sources? and lacked USA input.
It would seem to not be a twin chain 20M3 engine .. Therefore a 20M3S, right!
Cam, head, manifolds, carbs to combat specs.
Lacking period parts book documentation, what is the earliest VIN/serial# documented (in some fashion) of a combat tune engine. What were the actual pieces?
I do own 3 scrolled, timed breather, SS marked combat cams. So it may have been possible they WERE built in 20M3S before the claimed "Combat production series began (from 200976)".