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Letters stamped into cases

deejay499

Well Known and Active Forum Website User
VOC Member
I have been asked about some letters stamped into twin cases behind the G50 plate. They are RK JA1 or l. Would they have been done if the cases went back to the factory for work or from a later engine builder, possibly Ron Kemp. Anyone know out of interest. Thanks.
 

chankly bore

Well Known and Active Forum Website User
Non-VOC Member
There are also foundry stamps on the major castings. I know what they are, but have been sworn to secrecy after a severe and painful initiation. Perhaps if you can put up a photograph it might help.
 
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