Is my engine toast?

Actually Danlatu words...I just like it so much, that's my new description for turd gen

 

I called every engine parts manufacturer to see if I could acquire oversized pistons. No luck as of yet. So if you have heavy wear on the cylinder walls, you will need a whole new block (2k$) from the dealer or a used motor with less miles and pray that the engine was well taken care of.

 

What the FAQ, that was a very informative video.

 

I somewhat admire your guts........but not your wisdom.

The odds against this venture being an eventual success are OVERWHELMING in my opinion.

The high voltage electrical stuff is dangerous.
I think you will be amazed at how much "stuff" you have to move or remove to get at the head(s).
I also think that you probably can't inspect the bottom end without another major hassle.

I wish you good luck; I think you will need a LOT of it.

 

Hey, I resemble that.

 

Any ideas how honesty is policed with disclosure of miles on an engine? Is it even possible? Is there some sort of paper trail, tracing the VIN??

 

Nothing is overwhelming as long as you learn to take baby steps at first. Any failure will result in learning on how not to do things the next time. Having a skillset to do things on your own is invaluable.

 

A good salvage yard does have paperwork for mileage and have some sort of warranty. But history on maintenance is questionable unless you see the car in person and find all the service paperwork in the glove box. Most of the engines are already pulled and sitting on a rack. Car will then be crushed depending on time sitting in yard, parts left and quantity.

 

I have a 2010 Prius with over 335,000miles...Make me wondering if my car is a ticking time bomb... I'm pretty sure with those high miles and at some point the previous taxi company have to put new head gasket/ or rebuild engine before they sold it to me. Also drinking roughly one quart of oil every 2,000 miles? Man.. it make my stomach hurt from thinking about that head gasket issues. But hey my Prius run great thou!

 

Seems we are using a guy's engine problems to further work politics and somehow equate better mpg with worse engines. First I suggest anyone with more than 150k miles on his engine have someone other than the dealer swap it out for a low mileage used engine. Not that hard to do for a shop setup to do it. Second, if speculation is the order of the day, why not consider that Toyota just started using electric driven oil pumps "for some reason" and the op's car does not have one? Could it be that an engine benefits from a constant cooling bath of oil as much as it does a constant flow of coolant even when it shuts down hundreds of times on a trip? Interesting speculation?

Sometimes I wish this forum had a little more aggressive moderation going .on..,

 

The toyota prius would never need an electric oil pump, oil pump is always running as long as the gas/electric or electric only motor is in motion to drive the cvt/wheels. The engine always turns, fuel and spark are cut when ev is engaged. The engine crank, flywheel, and cvt is attached. No speculation about that. If a gasoline engine runs below 195 degrees Fahrenheit it will run rich. Running rich throws extra fuel out the exhaust, past the rings and into the oil. If you have ever done your oil change you will find fuel in it, oil comes out faster than it goes in with strong odor of fuel. I never said that worse engines get better mpg. I stated that looser engine tolerances (piston to wall clearance, softer rings and bearings) will make the engine easier to turn, creating better mpg. Designed by engineer's. No speculation on that. Every car that is mass produced will make different hp and torque figures on a dyno. The hp figures you see on paper are a ball park. Ford seems to be way under while chevy hits over. Every engine will have different wear and tear. Some prius' may have very little oil consumption while others have more due to temp, humidity, altitude, driving style, idling, power mode on/off freeway etc. If all prius' had 10k oci without checking the oil level once a week could risk running low on oil creating excessive wear and tear of engine internals. No speculation there. The prius like a lot of newer toyota's have more blow by than one's build 10 years ago. Causing more oil in the intake manifold and gumming up intake/exhaust ports, pistons, egr cooler and everything else in it's path.
Not sure what you are getting at. People here are chiming in with help for the OP and anyone who googles this article. Politics has everything to do with it. Car manufacturer's like FCA build unreliable cars and people have taken their business elsewhere. If Toyota continues this they too will have people leaving. Everything is documented and will show up on consumer reports, kbb, consumer guide etc.

 

Just move it, relieve pressure from the line by using zip ties to hold it closer to the radiator support.

I am not sure what are best years, ct200h and prius have the same 2zrfxe motor.


Do not reuse head bolts they are one time use only and stretch, make sure you have a good Torque wrench. <------- Take a hit. Be somebody.

 

Yes, yes I know. I once took out and CLEANED all of the hydraulic lifters in a V-8 engine.........and it ended up that wasn't the problem at all.

But one needs to be practical. Dirty Harry: "A person needs to know his own limitations."

 

Hydraulic lifters usually are the last thing to fail, bent pushrods, needle bearings fail in roller rockers, cam wearing out, valves not seating, bent valves etc.

 

Gen 1's New Car Features Manual came right out and said (p. 47), "Through the use of a thin-walled cast iron liner in the cylinder bore, a distance of 8 mm between the bores has been realized, resulting in a compact package. This liner is thin, so that boring is not possible."

Now, that was for the 1NZ engine in Gen 1 (and 2, and c). I think it is also true of the 2ZR, but I do not have a Gen 3 NCF to check at the moment.

-Chap

 

What's the causal link here?

-Chap

 

I should be able to do .020 without problems, I have done short block v8 motors with similar clearance. Either way I will know if it could be done when my motor wears out. There are some 1.8 pistons for the corolla I could try. I'll have to see what my machinist thinks. More powaaaaa.

 

Full blockage of EGR, high combustion chamber temp and cylinder pressure.

 

Well a couple of them were "sticky" but the ticking noise coming from the engine turned out to be a broken return spring in the mechanical fuel pump. A common problem back then I was told.