Aussie 47 mercury

[GEOFFNZ]

Possibly someone has run a UNC tap into the block.The original threads were slightly under size to form a tight fit on the stud. Cheers

[DanS]

Gday guys, had a break and now back on to it.
Problem, the C69A we were looking to rebuild for the merc was looking
good! Standard bore, all studs out, no visible crack as yet! One night dad had a mate over wuth the oxy and cut through the seised up valves and with his valve removing tool and just not thinking he punched through a water jack hole!
Is this a dead block now or is there a way to fix it??
Thanks for any advice
Dan.

[38 coupe]

Originally Posted by DanS

Gday guys, had a break and now back on to it.
Problem, the C69A we were looking to rebuild for the merc was looking
good! Standard bore, all studs out, no visible crack as yet! One night dad had a mate over wuth the oxy and cut through the seised up valves and with his valve removing tool and just not thinking he punched through a water jack hole!
Is this a dead block now or is there a way to fix it??
Thanks for any advice
Dan.

Maybe you could drill the area round and use one of the cast iron crack repair plugs. Then drill one side of the repair plug for the water passage. You'd have to be careful that the plug doesn't bottom out before the threads get tight. Just an idea.