reply to parker
Parker Dean,
Might be the case in a small amount of cases, but being a Tech for ford then good year I have probably done a few hundred head gaskets over the years on many cars that had a real amount of oil contamination. I have also done sets on cougars and thunderbirds with no i'll effects to the bottom end. Of course they wernt run until the oil was white, if they were I wouldnt touch them. I have only seen the rod bearing head gasket connection on 4 cars all being supercoupes and all being the exact rod that the head gasket blew on. And all happening within 5000 miles of the head gasket repair. I would have to disagree with the babit contamination of the bearings from the very small amounts of water that does get into the oil pan. Usually when a supercoupe blows a head gasket it is a great blow out not seepage as in most cars and usually pumps the radiator dry pretty quickly. Since water doesnt compress and initally there is pressure in the radiator system I belive the first couple compression strokes with the cylinder full of water hydro locks it just enough that it sqeezes out the very small film of oil and allows metal to metal contact, which then whipes the babit off the tops of the bearing on the top bearing portion, to the copper. Which then not only allows alot of oil clearance, but as you say doesnt have a babit covering to to pick of the fine particles, which then cut up and score the crank shaft, which then does further damage. I think the volume of oil the the sc motor moves, covers this up a bit, and thats why it takes awhile to do it.
NOt to mention the idiot that keeps trying to start the car when it wont barly crank over because of the full cylinder of water. ANd him saying I just dont know I've changed the starter the solinoid and the battery and it just wont crank fast enough to start, all by the way it was blowing grey smoke out the exaust on the way home. Now I guarntee that whipes the babit off or flatens them very fast.
Does anyone else have, or seen this connection? I'm kinda interested. The next one I do I WILL do rode bearing immediatly and then write up what I find. My friend just bought a 90 with orginal head gaskets so I got a feeling I'll have a opertuninty any day now!LOL