Oil drain plug

[cbudden]

Good evening, Could anyone advise me of the dimensions of, or better still, a supplier, for the oil drain plug on the underside of the crankcase. I have measured the hole with cheap digital calipers and I don’t arrive at a sensible number in metric or imperial! Any help gratefully received.

[Raahauge]

I probably have a spare, I will look over the weekend. If no spare I can certainly measure it for you.
Regards
Mike

[cbudden]

That would be great, many thanks. I spent a good while on the internet trying to find something but to no avail. I am just about to start rebuilding an engine I bought as several boxes of bits and have just had repairs to the block and head done. It’s all new to me but interesting!

[Kari]

Hello Chris,
The tread is M30 X 1,5.  the Hex for the tool is 22 mm. Instead of a copper gasket, I use an O-ring as seal.

Karl

[cbudden]

Thanks both, very helpful. In case you are wondering I recently bought a project 1935 factory cabriolet (type 34). So expect to hear more from me!!

[Kari]

We are wondering! It would be much appeciated if you can tell us the story of your Augusta project, perhaps a few pictures. Thanks very much.

Karl