Engine Exploded
#1
Engine Exploded
I have a friend that owns a 2004 350z that says while he was driving around 40mph, the engine started to smoke and make noise, he shut it off, than restarted and it would not start. after getting it to the shop, the removed the engine, the rear piston, on both sides, was gone!!! it look like it blew apart, the rods was there but no rear piston!! it broke the camshaft in half, bent valves, how can this happen, or if someone has seen this, can tell me what happened??? i find it hard to believe just driving at 30-40 mph and the pistons exploding can do this??
thanks for any help or thoughts!!
thanks for any help or thoughts!!
#2
No oil in it?
I'm sure there's a whole lot more to this story than "I was just driving around at 40mph and my engine blew up".
Did he forget to shift out of first gear?
I'm sure there's a whole lot more to this story than "I was just driving around at 40mph and my engine blew up".
Did he forget to shift out of first gear?
Last edited by DavesZ#3; 11-17-2010 at 04:14 PM.
#4
just trying to see if anyone else had this issue, it did have oil, only reason i am saying this is because none of the parts are blue in color, but it could of been a oil issue. i may have to agree with the no shift issue, it is a manual, is there anyway of checking the computer missed shifts???
thanks again!
thanks again!
#7
The amount of damage you describe sounds like something broke loose at a very high RPM, or lots of power was being generated.
Surely the mechanic that opened it up has a better idea of what might have caused it.
As for this happening to anybody else - sure, just check the FI section, it's full of blown engine stories.
Surely the mechanic that opened it up has a better idea of what might have caused it.
As for this happening to anybody else - sure, just check the FI section, it's full of blown engine stories.
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#9
#16
"Rear pistons run hottest since they don't get as much coolant."
They get just as much as any other part of the engine. I'd say the Nissan designers are probably capable of designing the cooling system so there are no hot spots that would lead to catastrophic failures. Coolant passages can be designed to direct the flow where it's needed. It's not as simple as "in the front and out the back".
I'd like to know more about how the car was driven and maintained. I bet there was some serious abuse or neglect going on.
They get just as much as any other part of the engine. I'd say the Nissan designers are probably capable of designing the cooling system so there are no hot spots that would lead to catastrophic failures. Coolant passages can be designed to direct the flow where it's needed. It's not as simple as "in the front and out the back".
I'd like to know more about how the car was driven and maintained. I bet there was some serious abuse or neglect going on.
Last edited by winchman; 11-17-2010 at 10:03 PM.
#17
OP - were you riding in the car at the time of the failure? I'm guessing not. Without accurate info on how the car was maintained, if it was abused, prior signs of problems and a description of the actual failure, this whole thread is pointless.
Unreliable third party speculation is not going to find the answer - this will become another internet urban legend.
Unreliable third party speculation is not going to find the answer - this will become another internet urban legend.