Has anyone ever heard of a siezed 4G63?

gofastman · 09-25-2006

A friend recenty bought a Galant VR4 and on the way home the engine siezed (sp?) I have never heard of this, only spun bearings or bent valves. (I'm more familiar with the 6G72) Anyone know what could have happend?

Super Bleeder!! · 09-25-2006

no oil? timing belt snap? balance shaft seize?

Matt D. · 09-25-2006

Spun bearings can make an engine seize.

gofastman · 09-25-2006

Quote:

Originally Posted by Super Bleeder!!

no oil? timing belt snap? balance shaft seize?

balancing shaft belt broke, timing belt started to shred, oil pump and balancing shaft were very hard to turn, oil looked like it had metal in it, and i think the head gasket poped

blageo23 · 09-25-2006

Yah the balance shaft was pretty hard to move until broken free. The oil pump turns but was hard until broken free also. The crank DOES NOT move. We tried to turn it and hit a piston down and NOTHING. Today we are pulling the pan and hopefully will get all of our questions answerd.

sleepydsm · 09-26-2006

I saw the bearings, and crank last night. HOLY SHIT never seen anything like it before. Pics should be up soon.

Shane55113 · 10-04-2006

Heres a pic i took with my phone, I'm having a hard time uploading them all together so i have to go one by one.

Shane55113 · 10-04-2006

pic 2, this is the other half of the bearing

Shane55113 · 10-04-2006

pic three

Shane55113 · 10-04-2006

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.

**JET** · 10-04-2006

Mmmmm, carnage!

gofastman · 10-04-2006

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

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

Quote:

Originally Posted by JET

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

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

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

Quote:

Originally Posted by Goat Blower

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

Quote:

Originally Posted by blageo23

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

Quote:

Originally Posted by Shane55113

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?