I had a valve grind on .the right (cylinder 1 and 3) on my 86 xt turbo (EA82). The #1 intake valve was not seating properly. After reinstalling and puttting in the coolant water, it leaked out of a hole on the rear (head is on right). The hole is manufactured as I have another one that has the same holes, but this now leaks water. I guess, I will have to remove this head again and send it back to the machine shop. But I would like to know what is happening.