https://www.ebay.co.uk/itm/265205312533 ... fKYLkx3Jug
Purportedly an M Type engine. Has M dipstick, wide oil filler neck, long brass manifold nuts, water outlet without the fan clamp and an alloy sump.
But if the tag is correct, this is Minor engine 31740B - late '30 or early '31.
OHC engine on eBay
Moderators: Ian Grace, Will Grace
Re: OHC engine on eBay
And if it's missing its crank, I'm not sure what's holding the front pulley and flywheel on ...