Looking at this again last night the idea of cleaning up another 1/16 at the top looks the smart option.
The O ring groove was going into the cover plate, not the block. I might machine the extra land and check the fit with blue before sealing with loctite.
I find it difficult to believe that pressure will be a problem when the timing chest vents to the crankcase and the crankcase is vented through the oil filler into a catch tank.
Charles
The O ring groove was going into the cover plate, not the block. I might machine the extra land and check the fit with blue before sealing with loctite.
I find it difficult to believe that pressure will be a problem when the timing chest vents to the crankcase and the crankcase is vented through the oil filler into a catch tank.
Charles