Hi All,
Jules, I doubt that the oil / conrods would make a noise?
JHG,
The wet sumping is down to the ball valve in the crankcase or behind the pump if the engine cases were modified at the rebuild,
My SR has the ball behind the pump and at one stage wet sumped due to a fibre of the gasket interfering with the ball seating.
I have found that the cork on the breather compresses and gets a little loose, this is enough to cause oil to be pumped out the breather. My test for this is to try rocking the breather back and forth against the drive peg
It should be tight enough to make it very difficult using fingers but easy using pliers.
If only a shade loose a gasket paper shim behind the cork will tighten it enough.
John