Ok, experts, I have an interesting problem with the aluminum head on my Toyota 22R engine (233K miles). It has developed a small hole (.080 ?) from the water jacket into the exhaust port about an inch in from the edge of the port. I assume it is a flaw in the casting - I can go in with a probe and it seems to be solid around the hole. Is it possible to get in there with a tig welder and weld the hole back up ?? I suspect this is one of those "you only get one chance" things ... Ernie ?? It is definitely not a crack, just a small hole (on the other hand, the water "cooling" of the exhaust manifold has left me with a
2+ inch long crack -- I may try to grind/braze that myself. Other than that, the head is in good shape. Sigh.- posted
18 years ago