Hello.
Does anybody know where I can buy the concave expansion plugs for the 6 cylinder H 226 engine?
I had a plug weeping coolant and when I removed it I found the block behind the plug was filled with rust.
I'd like to remove the rest of the plugs and clean the block without pulling the engine from the truck.
The hole in the side of the engine block appears to be 1.31 inches (1 5/16?).
The guy at the auto parts store tries to be helpful, but he wants to sell me a solid cup style plug or an adjustable rubber "doughnut" type plug.
There does not appear to be enough area to drive the cup style "flush" into the block.
I'd rather replace the plugs with steel or brass plugs then attempt a "doughnut".
Any help (part number?) is appreciated.
Thanks!