Does anyone know of a site where there are pictures of the cracks that appear in some 4.0L heads that cause problems. Supposedly these cracks are the result of over heating. Cleaning up the surface of my 4.0 head while replacing piston I've noticed what might be a small mick, it is within the inside of the sealing ring on the head gasket. It almost appears to be just a surface scratch and doesn't appear to be seen of felt in the combustion area. At this point being retired I'm a little tight on money to have the head machined or buy a new one. If I can go as is I'd like to, but am looking to the experts for answers. If it would help I could try to post pictures tomorrow. I not the first owner of the Jeep but have had it for a couple of years and it has never over heated or lost coolant. Engine has around 190000 miles on it. Bearings and everything looked good. Put in a re manufactured crank due to the cost of the odd size main and rod bearings.
Thanks,
Bill
Thanks,
Bill