In 1999, the head gasket blew in my '88 pickup with a 22R. I had 140,000 miles on it. Now it's gone again and in the shop. It has 176,000 miles on it. I asked the shop manager how it could be that the original head gasket lasted 140,000 miles and the replacement, after the head was heli-arced and machined because of a thin water jacket (a real problem I understand), anhd put together with new head bolts, it only lasted
37,000 miles. I seem to be missing around 100,000 miles here.
Was/is there a problem with the 22R head? A friend of mine in Denver had an earlier pickup with a 20R engine and had over 250,000 miles on it and all he did was change the oil and drive it.
I live in Southern California so have fairly mild weather year round.
Should I have re-torqued the head bolts after a few miles? I wouldn't think so, but now I wonder...