Another disturbing noise from Ruby

[Denis Sweeney]

Attached is a link to an updated video taken earlier today.
After far too many days spent faffing around trying to get the starter to turn over, I finally managed to work out the problem, all of my own making I might add. Many thanks for the very useful advice from one and all, it all boiled down to insufficient cable diamater from the battery. Once enough cable diameter was provided she turned over as she had always done fitted in the car.
I had removed the gearbox on the test rig as a first attempt to isolate the problem and having run her yesterday with no squeal present, I put the gearbox back in place and run her again today, as you can see/hear there is again no squeal.
In trying to get the engine to turn over on the battery to start her, I had turned the engine over many many times on the handle and the bores had been oiled again, so I cannot say for definite that this was the issue, but my very first thought was dry (or insufficiently oiled) cylinder bores.

I will remove the head to check the bores just to be sure all is ok, but if there are no issues, I will put the engine back in the and keep my fingers crossed.

Hope this link works
Cheers
Ruby Engine on Test RigVID20230505154129