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<blockquote data-quote="mobileaudio219" data-source="post: 5277487" data-attributes="member: 558142">It depends on where the head gasket blows.In his case it sounds like it blew internally, between a water jacket and one of the cylinders.. Which will cause water to get into the oil, which usually results in a spun bearing..I&#039;d pull the engine and see what bearing(s) it spun..Usually when a being spins, it scews up whatever else its touching (the mating surfaces.)So if its a rod bearing, it probably took out the rod and damaged the crank. So you can either replace the crank or have it turned, then replace the rod.If its a main bearing it probably damaged the crank and the block/mains. You can have the block/mains aligned honed/bored, the crank will have to be cut or replaced.If its a cam bearing it probably damaged the head and the possibly the cam. You can have the head aligned honed/bored and replace the cam if nessacry.If you replace one bearing, just go ahead and replace them all (rod/main/cam.)The head needs to be check for cracks and the mating surfaced its to be checked.If you like the car and plan on keeping it for a long time, I&#039;d do a full rebuild. Since your not doing the work and labor is expensive, I&#039;d do it right the first time..Sometimes you get lucky and it doesnt scare up the mating surface and everything will still be in spec so you can replace JUST the bearings, but it sounds like you drove it after it started knocking so theres probably going to be some machine work in your near future...</blockquote>

[QUOTE="mobileaudio219, post: 5277487, member: 558142"] It depends on where the head gasket blows. In his case it sounds like it blew internally, between a water jacket and one of the cylinders.. Which will cause water to get into the oil, which usually results in a spun bearing.. I'd pull the engine and see what bearing(s) it spun.. Usually when a being spins, it scews up whatever else its touching (the mating surfaces.) So if its a rod bearing, it probably took out the rod and damaged the crank. So you can either replace the crank or have it turned, then replace the rod. If its a main bearing it probably damaged the crank and the block/mains. You can have the block/mains aligned honed/bored, the crank will have to be cut or replaced. If its a cam bearing it probably damaged the head and the possibly the cam. You can have the head aligned honed/bored and replace the cam if nessacry. If you replace one bearing, just go ahead and replace them all (rod/main/cam.) The head needs to be check for cracks and the mating surfaced its to be checked. If you like the car and plan on keeping it for a long time, I'd do a full rebuild. Since your not doing the work and labor is expensive, I'd do it right the first time.. Sometimes you get lucky and it doesnt scare up the mating surface and everything will still be in spec so you can replace JUST the bearings, but it sounds like you drove it after it started knocking so theres probably going to be some machine work in your near future... [/QUOTE]

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