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View Full Version : Has anyone ever heard of a siezed 4G63?

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JET
10-04-2006, 12:33 AM
Mmmmm, carnage!
gofastman
10-04-2006, 07:06 AM
I still want to take off the front cover, curious to see if the oil pump is damaged.
also the oil filter needs an autopsy.
JET
10-04-2006, 09:23 AM
There isn't really much point. The engine was definitely oil starved. The filter will be full of crap and the oil pump bearings will probably be in rough shape.
Goat Blower
10-04-2006, 10:22 AM
There isn't really much point. The engine was definitely oil starved. The filter will be full of crap and the oil pump bearings will probably be in rough shape.

Yeah, but why would that happen at the same time as the balance shaft belt snapped? And what's an oil pump bearing?
JET
10-04-2006, 06:06 PM
I guess technically it is the rear balance shaft bearing, but drives the oil pump. If the engine seizes I could see it snapping the BS belt.
blageo23
10-04-2006, 06:46 PM
Thats the thing thats wierd about this... The car overheated, the BS belt broke shreading half the timing belt and the bearing siezed to the crankshaft. All "at the same time"(not really at the same time but close).
Matt D.
10-04-2006, 07:10 PM
Yeah, but why would that happen at the same time as the balance shaft belt snapped? And what's an oil pump bearing?
JET explained himself, but there are bearings that the oil pump shaft rides on in the front case.
Matt D.
10-04-2006, 07:11 PM
Thats the thing thats wierd about this... The car overheated, the BS belt broke shreading half the timing belt and the bearing siezed to the crankshaft. All "at the same time"(not really at the same time but close).I'm guessing shit started to sieze, caused stress on the balance shaft belt and that's what caused it to snap.
gofastman
10-05-2006, 06:26 PM
this was a pic of the top of the same piston that had the shredded bearing, the thing is that there was no broken valves, but you can clearly see that its a broken off valve that hit it.
another strange thing, none of the valves were visibly bent from this cylinder, its almost as if this piston was reused on a previous rebuild, could the car even run correctly (for a few thousand miles) if that were the case?