When they do the autopsy, they should be able to determine if it was the head gasket or not.

 

It doesn't take that much liquid (oil, coolant, or otherwise) to stop a piston. Typically coolant would be drawn in on an intake stroke where the chamber pressure drops below atmospheric. That combined with a pressurized coolant system... If the head is pulled, one should be able to diagnose that it was a head gasket failure.

When I rolled my diesel truck off road, the oil bath air filter drained into the engine shutting it down. If it weren't at idle and weren't such a beast of an engine, a bent rod could have been an end result. Instead, I cleared the cylinders and it fired up in a big smoky cloud.

I've seen the results of an over-rev condition on a marine 454. It evidently over-revved when the guy didn't throttle back when the boat left the water. Nothing was left of the cylinder wall where the rod broke. It just banged around and took all of the wall except for about 1/4" at the top of the cylinder.

Is the Scion engine an interference engine? (I assume it is.) If so, an over-rev conditon should result in some amount of valve float. A valve contacting a piston should result in a hole, but could result in a bent rod. I'd think you'd see this in the form of a bent valve(s) that made contact.

 

ouch, good luck bro

 

never seen a bent rod from valve hitting a piston , seens holes in pistons , and bent/broken valves.

 

The 1NZFE engine is a non-interference engine, like nearly all Toyota engines are.

 

I hear it all the time. Usually from Honda's. They're basing it on the engine being run around 5 to 6k for an extended period of time. It's not so much that it's over rev'd it's also how long it was held there. 5 to 7k for 10+ minutes will do damage to each and every one of these (the rod shouldn't have gone but that was probobly due to the oil breaking down or heat in the cyl walls causing the piston to seize, hence bent rods. These engines don't make enough force to bend a rod on 'shear power'. I know what bent rods are all about This is out of a Lightning, something that is prone to snapped rods.

 

well i'm going to have to do it the hard way, i am picking the car up from the dealership some time this week and am taking it to my mechanic, so soon i'll be on the road and even soon i will finially know what happened. i'll definatly let you all know what happened to the engine, whether it was my fault.....i guess it could be but dont understand how, or if i'll be heading to court.

 

man....i'll have to get some crazy ___ pictures like the ones above too, that looks CRAZY!!!!

 

One of the best handling FWD's to date (an ITR is about the only thing that compares in its era), throw a Power FC, I/H/E and your high 13s in the quarter. How is that not a decent racer?

The GTS misshift problem was caused by close shifter gates, they changed the transmissions "throw" in 2002. They also lowered the fuel cut that year from 8350 to 7800.


I think the person who wrote this thread isnt telling us the whole story.

 

Nothing could hurt Scion more, screwing with the target market

 

Head gaskets leak coolant into heads all the time, but this produces vapor in the exhaust, not hydrolock. The reason is that head gasket leaks put very little water at a time into a cylinder, not the slug of water required for hydrolock.

 

I think he has bad luck. Not being screwed with. Look at that guy that got a new motor just because he (purposely) drove thru deep water. It's how you handle yourself or who you know. I personally think they replaced the wrong motor.

 

[/quote]I think the person who wrote this thread isnt telling us the whole story.[/quote]

well tell me what your suspicions are and i will clear them up for you. if the clearing up of any misconceptions would help in the replacement of my engine, or at least a resolution i am game. I feel like a lot of people don't believe me when i say that i was just cruising on the freeway when it happened. Other than taking my word for it i can really do any more to prove that. i will admit that i think i do drive my car pretty hard, and have mis-shifted. However, the last time i mis-shifted (forcing the engine into atmospheric revs) must have been months ago (i know this seems outrageous but mis-shifts do happen, i'm sorry to say i'm not perfect). That is probably the only time i have mis-shifted like that. i have done little gear grinders but that has nothing to do with this. also on the freeway i do drive fast usually around 80-90, which is pretty much a little above the flow of traffic in San Diego. If any of this seems outrageous....well we'll find out, but i really thought the little scizz could handle it and if not.....i guess im sol. i have owned two older hondas and drove them about the same... probably harder, and they weathered just fine. at least while i owned them.

 

Our cars have event data recorders on them. Similar to the ones on airplanes, just without the voice recorders. The monitor and record the rpms, throttle load, speed , what gear you are in, what wheels have traction, etc. It is located in or near the air bag module. They are used to determin what you (as the driver) were doing with the vehicle leading up to an accident. If you know someone that can read the data in that module, submit it to Toyota. Or even have the dealership scan the data. They do it all the time. Then you (and everyone else) will know what really ahppened.

 

Yes, great idea!!! I wasn't sure if we had em or not?