25-06-2020, 10:35 PM
(25-06-2020, 05:33 PM)Reckless Rat Wrote: Thanks for that, David. The reason I asked was that my RP should have a bolt down crankcase, but the current engine is a bitsa, with a low frame crankcase dated 1935 (M238xxx) I do however have a spare case from 1933. It's got the rubber mountings but the narrower drillings. It has an engine number at M181xxx so it must be one of the early ones as I reckon it's from September 1933. It was only when I was checking the case over that I noticed the difference in the diameters on the feet.You're welcome.
I don't think that your estimate of the date of your spare crankcase is far wrong. As you may recall from previous correspondence, I am in the happy position of being able to put the build date of my car into the third week of June '33 and my engine number starts 177xxx. DavidK's post would seem to lend support for your estimate.