Originally Posted by
mick88
Very nice tidy unit and it looks like living for years in the old barn have kept it in reasonably good order.
With the oil leaks on your motor make sure it is breathing ok as I see you have the sealed cap on the rocker cover oil filler. My motor is an earlier model and I had fitted a sealed cap like the one on yours thinking that it will breath well enough through the pcv valve.
Not the case!
It was ok running around locally but on the highway at constant speeds (95-100) it would spit oil out anywhere it could......eg rocker cover, side plates, sump etc. Not a lot, but just enough to be annoying. I fitted new cork gaskets all round and made sure the pcv valve was all good. Still the same! Finally changed the oil filler cap to the original spec breather type (with the steel mesh in it) and all good. It doesn't spit any oil out now.
If you have a look at the photo's of the Holden motor in the Johnson Conversion link you posted there is a good shot of this type of engine breather.
Are the diff centres you fitted 3.54's?
Cheers, Mick.