Need New Engine in my 2010. Head Gasket. Have many 2012 and newer fell the same fate?

EGR and PCV system, the latter being improved with an oil catch can. All you can do with the EGR system is clean it out periodically. Clean the system(EGR) on the replacement engine before installing it and perhaps plumb in the oil catch can as well.

 

This. ^^^

Plenty of reports of these issues with 2012 and newer, too, now that many are up into 6-digit mileage. Oil burning isn't just a 2010 thing either. The intake manifold update likely didn't do much to remedy the EGR/cold start knock issues. It really doesn't matter what's going on downstream if the EGR cooler is restricting flow.

Cleaning your EGR circuit (intake manifold, pipe, valve and cooler) while the replacement engine is out of the car would make a tedious job quick and easy!! Then a regular cleaning interval somewhere between 50 and 100k miles after that, with how far you err on the safe side up to you. 5k miles oil change interval with full synthetic will help keep oil burning at bay, also. Once these engines are burning a measurable amount, it's hard (or impossible) to stop without teardown, freeing or replacing the stuck control rings and drilling out the piston oil return holes.

It seems the turd gen engine is simply a victim of Toyota chasing the limits of thermal efficiency. They're still great cars though, and with an awareness of the issues, can easily run typical Toyota mega-miles, IMO. Good luck with the engine swap.

 

Apart from verging on Shakespearean, maybe urban myth?

What exactly was done? Being a dealership, I'd assume they replace parts, didn't clean? Did they give you the old parts? They could be cleaned and reused.

They replaced it? Would you happen to have the part number of the new one? I'm not sure what the mod's would be, comparing to the original. I've had ours (original) off and cleaned it, wondering myself what the improvements there could be, what was revised, and what issues they were hoping to address. I seem to recall people with the newer version continued to get clogging.

This page indicates the progression of parts numbers I think:

Intake Manifold - Toyota (17120-37054) | Toyota Parts

There appear to be four revisions, lol.

Something from Toyota, even more part numbers:

https://attachments.priuschat.com/attachment-files/2015/10/96232_T-SB-0103-12.pdf

More from Toyota, this is dizzying:

https://static.nhtsa.gov/odi/tsbs/2016/SB-10084369-5448.pdf

Any more details, how many miles on it?

 

Why would you replace the engine if the head gasket failed? Just replace the head gasket. Should be half to a third the cost.

 

The 2016 (gen 4) is a different EGR circuit, with the cooler being plumbed downstream of the catalytic converter. It's popular opinion around here that this was done to remedy the soot clogged EGR tendencies and subsequent head gasket issues the turd gen is prone to. My personal feeling is this is likely the case. Still, we don't have true high mileage data from gen 4 yet. Personally, I would inspect the Gen 4 EGR circuit just as I do turd gen until I verified for myself that it's a problem solved. It's still external EGR and Toyota has pushed the 2ZR-FXE to an even higher thermal efficiency. Gen 4 is an awesome vehicle, IMO. An upgrade in every way other than looks.

 

Gotcha, thanks for the clarification. 2016 Prius v is indeed turd gen engine!!

 

Your original water pump lasted 300k? That's very good. So, that also means the original engine also lasted 300k miles? I'd sign up for that.

How have other parts fared for you- traction battery, brakes, 12 v?

 

100,000

 

Stories, like yours, make me happy to have a turd gen. It also reinforces my belief that the traction battery longevity is more of a byproduct of years and not miles.

With my cars with timing belts (I hate them), they'd have to changed out at around 60-70k miles. When doing that job, I'd usually have the mechanic replace the water pump at the same time. I had a Jaguar that was on it's 3rd water pump by 100k miles.

 

It’s a magnet driven pump. I just pulled ours out of service after 176 k miles.

Still looked ok, but I play on the preventative side.

 

I have 310k on my original water pump, inverter pump, hv battery and transmission is still strong, Rotors had more rust than wear and had to be replaced, on third set of pads. The ac compressor died @ 304k. I believe blown head gaskets are from all the oil, water. fuel coming from the pcv valve during the colder months. That cold start knock is not good for the engine. Still a great car.

As for the water pump, I want to see how long it will last. My cats water fountain has been running 24/7 for the last three years and has a similar design to the prii pump. It is a brushless floating magnet.

 

FWIW - The Prius C has an insulation sleeve over the (very short) PCV hoses - I would think this would keep water vapor as pure water vapor, which could then safely go into the inlet tract without being condensed into water before-hand.

. A lot of the videos I see where people have long, un-insulated hoses to and from a catch can, often have much, much more water than oil captured by it - due to being condensed out of the vapour . I would worry about the can becoming over-full and liquid water being drawn into the engine.

Also, my car seems to have a cyclonic separator, with the oil (and any liquid water) being fed straight back into the oil sump. Just for fun, I hope to add a BMW cyclonic separator ahead of the original one, and trap any oil/water in a separate container, I'm interested to see if the engine oil stays cleaner for longer as a result.

..

 

You’re in Ohio, you should be fine.

Us Cali folks will have a tougher time if it gets to that point.

Good luck and keep us posted .