Sorted out my engine rattle on my big seven, the other day I fitted new rings, gudgeon pins, shell bearings only to start it and find I still had a slight rattle however much improved oil pressure, pulled the engine back apart today and found the hole for the wrist pin on piston 4 was for some reason more oval than round (only on one side) so I drilled out the hole slightly bigger, and made a bush using an old drill and plenty of files and some steel pipe and a lot of patience, it's not professional but it's cheap (go easy on me I'm only 19) ha
https://youtu.be/nSgvYMGY83o
https://youtu.be/nSgvYMGY83o