did I throw a rod? (1 Viewer)

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Joined
Aug 13, 2003
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Location
Northern Virginia
Hey guys,
Last weekend I was going four wheeling, and i was driving down the interstate when the engine made a really bad knocking noise. So i pulled over and all this smoke comes up from under the hood, so i open the hood and theres a small fire, so after i put that out You could tell the oil pan was torn out.. Kinda hard to describe. But when you look down you can see oil sitting in the oil pan. Any ideas on what happened, and is it fixable or do i need a new engine.
Thanks,
mark
 
LuvenMud15 said:
t You could tell the oil pan was torn out.
mark

Yea, I'd say that sounds like a loose rod. If the cylinder walls escaped damage, it should be repairable. What rpm were you at when it let go? How often to you go above 3500 rpm?

Remove the oil pan and inspect the damage. I think the more common failure is to ovestress the conecting rod bolts at the crank. They stretch a bit and then come loose. Eventually they either fall out or fail. The crank might have sustained asome damage in the process.
 
I threw a rod once and it wasn't pretty. I think you'd know if a rod shot through anything... mine broke loose and there was a shrill, mechanical tick in place of the normal purr of the engine. Louder, faster with more RPMs. Sucked. It blew through the oil pan and drained the vehicle in minutes.

This was on a VW Golf, so I am betting the sounds/damages would be a little different. I took it to a shop and was raked over the coals for cost of repair. Again, newer car, not a cruiser.

Good luck with it.
 
You really need to look more cloesely at the situation and simpley see what is apparent. There isn't enough information here to give you a real answer as to what the problemis or how bad it is. IF it is a rod that failed (which is what it sounds like from what you report), then expect to find;

Destroyed oil pan of course

Damaged and likely ruined crank

Destroyed rod

Ruined piston

High likelyhood of destroyed camshaft

High likelyhood of some destroyed lifters and pushrods

High likelyhood of damaged/ruined oil pump

High likelyhood of ruined block.


Mark...
 
Mark W said:
You really need to look more cloesely at the situation and simpley see what is apparent. There isn't enough information here to give you a real answer as to what the problemis or how bad it is. IF it is a rod that failed (which is what it sounds like from what you report), then expect to find;

Destroyed oil pan of course

Damaged and likely ruined crank

Destroyed rod

Ruined piston

High likelyhood of destroyed camshaft

High likelyhood of some destroyed lifters and pushrods

High likelyhood of damaged/ruined oil pump

High likelyhood of ruined block.


Mark...


thats what my dad was saying, and if thats the case i would just put a 350 in it, or a new 2f... I also just realized I blew the head gasket. We've had the cruiser since 87' and i just did a frame off so i dont think theres much point in putting more money into an engine that has 350,000-400,000 thousand miles on it. p.s. its only been pasted 3500 rpm when im really thrashing it in the mud... but thats not very often. I was driving down the road at 60 mph, i think that its just getting old, because i definetly wasnt abusing it on the way down.
thanks for all your help, Ill keep you guys updated.
-mark
 
I threw a rod in a 77 BMW 320i, ~130K. It started to make a noise so I got off the road, and stopped the car. It never started again. (Their inline 4s aren't as reliable as their 6s)

Next was an 84 Toyota PU, 22R. ~185K Exploded, literally. There was a cloud of oil smoke behind me, and the rod came through the block. Apparently the truck had been sitting when I bought it, and most of the oil drained. I filled it before I left, but didn't help, most of the damage hda alreayd been done. I got it for free, and it grenaded on the drive home. (2 miles into it.)
 
84Bruiser said:
Apparently the truck had been sitting when I bought it, and most of the oil drained.

that might be what happened to me, because it was sitting for about a month when i did the frame off. So the oil might have drained and then i tryed to drive it 130 miles on no oil.
thanks,
mark
 

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