The possibility was a snapped camshaft,
Ah right, so my identifications are wrong. Mistakenly I thought the rockers were on the camshaft when I glanced a pic of the engine on Rave but now you point that out I can understand that the camshaft drives the pushrods which now explains the pistons still moving. I take it this isn't that common? Assuming it appears to just be a broken camshaft, how much do you think to sort it in parts?A camshaft from Bearmach is only £75 quid but its the extras that often add up.
No worries! What's life without the bumps! Maybe it'll be a learning experienceI feel it’s about to get very expensive sorry.