Pressure testing block

[Karl Wolf]

Originally Posted by Walt Dupont--Me.

The only place where a leak is hard to find is in the exh port from the valve to the exh manifold port, I would think submerging the block in a tank of water like an inner tube and putting air to block would be the best way. Walt

Or, block off the exhaust on the side of the block and fill the exhaust with water... look for bubbles. (Air pressure in block.) Have not found one with crack there yet, sure could see how it could happen, all the heat there.

Karl