The previous owner of my truck did not change its coolant often enough and the head has some pretty bad electrolicis on it. So while this motor is still running I want to pick up a new 22r and rebuild it so I can put it in before the head finally gives up completely.

I was just wondering is there a way to make sure the new engine I look at doesn't have any electrolicis with out pulling the head. I ask because some people might not want me to pull the head. Thanks for the help.