How much play should there be in a Lister D big end bearing ? Is there a
general rule of thumb for all big ends or do they vary? Can you still get
hold of such things or do you have to get them made up?
Make sure the rod is centered on the crankpin. A certain amount of rocking
slop is acceptable & necessary.
Pull the rod up and down. Allowing for oil film, there should be virtually
no movement at all in the big end. Dry assembled, there should be barely
perceptible movement, just enough to encourage an oil film to spread across
If you can pull it up and down & it goes tock-tock, your large chicken has
escaped, I'm afraid ;o))