Engine blown, what do you think?
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Engine blown, what do you think?
Im looking for opinions based off of the few features that were scene when this happened.
I was driving at about 50-55 mph, and I noticed the engine started to feel pretty sluggish. WOT and still very sluggish. Then the whole front end started shaking pretty bad and I looked in the rear view mirror and saw a huge cloud of white smoke. I pulled over and took a look, and there was white smoke coming out of the oil breather and from the back of the engine between the intake manifold and block. You have never heard an engine run rougher than this bad boy was. I was actually scared to get near it for a few moments thinking the crankshaft was going to come flying at me haha.
Im aware of many possibilites however before I start tearing into her I wanted some second opinions from trusted voices.
Thanks.
I was driving at about 50-55 mph, and I noticed the engine started to feel pretty sluggish. WOT and still very sluggish. Then the whole front end started shaking pretty bad and I looked in the rear view mirror and saw a huge cloud of white smoke. I pulled over and took a look, and there was white smoke coming out of the oil breather and from the back of the engine between the intake manifold and block. You have never heard an engine run rougher than this bad boy was. I was actually scared to get near it for a few moments thinking the crankshaft was going to come flying at me haha.
Im aware of many possibilites however before I start tearing into her I wanted some second opinions from trusted voices.
Thanks.
Posting Guru
Joined: Jan 2005
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From: The Vieux Ford, Kansas
Rod through the block. Thats my guess, they make all sorts of god awful noise and smoke until what is left of the rod comes free of the crank, they also don't run so good. Was it making a lot of mechanical noise (metal stuff smacking into other metal stuff)?
-Johnboy
-Johnboy
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its a 360.
Not a lot of metal banging metal, i'm leaning towards a blown head gasket though, because I tried cranking it over after. it budged but then stopped, might have hydrolocked that cylinder
Not a lot of metal banging metal, i'm leaning towards a blown head gasket though, because I tried cranking it over after. it budged but then stopped, might have hydrolocked that cylinder
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From: Montana
I agree. Before you assume 'the engine's blown' find out what the hell actualy happened...
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As I stated in the beginning, i was trying to collect ideas before tearing into it. Sorry for any confusion.
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Sounds like a seized up connecting rod. I've had the same symptoms before. Engine lost power, required first gear and full throttle to keep moving. Then it gained power again after the rod bearing finally spun. Till another rod started to seize up due to the lost oil pressure from the spun bearing.
Then a whole lot of frightening noise until it tossed a rod out the side of the block.
Pull the oil pan off and have a look.
Then a whole lot of frightening noise until it tossed a rod out the side of the block.
Pull the oil pan off and have a look.
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From: Douglas, Georgia
You have never heard an engine run rougher than this bad boy was. I was actually scared to get near it for a few moments thinking the crankshaft was going to come flying at me
As the last poster said, start to tear into it and all shall be revealed! I'm leaning towards overheated + cracked head = locked up engine.
Missing coolant, milky oil, etc would lend itself to this.
Won't really know till you look.
Best of luck,
Drew
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From: Suburbs of Chicago
I dunno about that.... I was standing next to a Detroit 16v149 on a tugboat trying to assess why it was smoking out of the exhaust when it dumped all the coolant into the airbox (cracked block) and promptly trashed 13 of the 16 cylinders. I assure you that was an interesting sound.
and yeah, I agree with everyone else. Check to see if its not hyrdrolocked or a cracked head before you order a new crate.
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Ill start tomorrow digging in, there was some pretty bad noise coming out of the valve train too.
Crate engine, na. Im lookin for a 4BT cummins to put in this bad boy if this is shot, but well see
Crate engine, na. Im lookin for a 4BT cummins to put in this bad boy if this is shot, but well see
Elder User
Joined: Nov 2003
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From: southeast Idaho
I have one sitting here with a 460 someone drove a little too far, one cylinder has a neat little 3" crack running down it now, once they get that hot figure on replacing and hope for the best
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