28-09-2018, 10:00 PM
HI Ian,
When the head & block are either skimmed on a grinder or hand done.are all the water corrosion marks removed.
because if any black marks remain they are porous. one solution is to bore out and weld in plugs which are then redrilled.
just a thought
Colin NZ
When the head & block are either skimmed on a grinder or hand done.are all the water corrosion marks removed.
because if any black marks remain they are porous. one solution is to bore out and weld in plugs which are then redrilled.
just a thought
Colin NZ