Inter crankcase stamping

Further to Dave's question. This is on 1932 Inter engine. There isn't one on a 1937 16H.

I have a 1932 crank case, so it will be a useful comparison  I can't remember what the stamping is, but will have a look when I get a chance.  But don't expect me to have the answer as to the meaning....

Hi,

I have a 1932 inter with the same stamping and was told that this meant that it has been worked on by the racing department or some thing like that.

Cheers

Andy

Andrew's comment sounds plausible but I wonder if it is simpler. The factory allegedly ran all the Inter engines in on the bench. Surely they would have hard stamped each one afterwards to make sure they did not mix them up? Could that be it? Is there anyone out there with an Inter that does NOT have the stamp?

(before somebody quotes this - the next mails pretty much prove it's wrong!)

Hi David 

I have 2 other inter motors and other spare case sets and they do not have that stamp.

Cheers

Andy

Hi Dave,

   I have been asked this question a couple of times over the years and have never found a definitive answer. In my opinion, there are not enough of these marked engines to be a factory marking, and my best guess is that this is a mark used by an individual tuner with Steve Lancefield being the most likely. This would be the connection with Harold Daniell as he was his brother-in-law.

Well my 1936 350 Inter has the marking on the crankcase and all the owners before me lived up in Scotland in the Inverness area and there is no history of racing or tuning that I know of. It was last on the road in 1960 in Scotland before I bought it in 1986. It is in full touring trim.

Regards, Nick

I dug out my '32 Inter crank case this afternoon.

On the drive side, to the right of the right of the upper crank case bolt, it has:

CS

537*1

GH

Just to the left of the rear upper crank case bolt, it has '79 x 100'

I believe it was a rule for racing to have the cylinder dimensions stamped on the crank case.  Was this stamping done on all ohc Nortons?

There is no mystery winged symbol on my case.  All I know of its history is that it was bought in a box of old ohc Norton stuff by my father in '54. 

Can anyone tell me what the numbers indicate about my motor?  If anyone can access factory records, I will of course divulge the missing digit.....

Paul

All pre-war Nortons were stamped with the bore x stroke...maybe as a guide in the factory. Even sporting beasts such as 16Hs and Big 4s feature the marking...82 x 120 in the case of the latter. :-)