wig wrote:you should also consider if you have intermolecular preconstructional defisit crystaline propagation lines across the diffusial cross tangents, that hold the main big end bearings

Main big end its got to be BBB
But if this was the case on the main it would have been rumbling like my arse .
I don't know where the crystaline propagation came from,
I hate to say your a better man than me.

lol
my uncles mates friends cousin heard about it from his mate teds best made who worked on a scaffolding plant.