That is scrap metal
2012 Toyota Prius excessive piston skirt wear?
- Thread starter 1911CHAMPION
- Start date
.
Last edited:
Agreed, that engine is scrap. You can buy a new short block from Toyota for around $2500. Toyota doesn't sell long blocks and used long blocks are very expensive for these vehicles.
From when I replaced mine:
https://bobistheoilguy.com/forums/threads/2011-prius-head-gasket-failure-at-185k-summary.305542/
Absolutely fake news.
Would be a time saver for sure, no idea about the quality.
You COULD fix the original block but it would have to be welded up and then milled flat, then presumably all cylinders would need to be bored at least 10 thou over(or whatever it takes to get them back to spec) new oversized pistons/rings bearings gaskets etc. problem with that approach is you need a quality machine shop and time.
Hard to tell from that picture whether it is erosion or a crack, but it sure does have the appearance of a crack. Do you have a heat gun? If so, try cleaning the surface, then heating it evenly. See if a crack appears. Sometimes this method will cause the crack to seep contaminates and show.
It is also hard to tell just how deep the erosion is. You could take a file, and draw it across the block a few times, to see just how low that section is. Use care not to get filings inside oil passages or other areas.
The thing is, I don't believe Prius engines are known to crack here.
It is also hard to tell just how deep the erosion is. You could take a file, and draw it across the block a few times, to see just how low that section is. Use care not to get filings inside oil passages or other areas.
The thing is, I don't believe Prius engines are known to crack here.
Doesn’t appear to have a crack.
This is what you need:
https://www.ebay.com/itm/3025371320...hjinH1xT9OkMGfRmVl4B087LOs_FHEDkaAmPfEALw_wcB
https://www.ebay.com/itm/3025371320...hjinH1xT9OkMGfRmVl4B087LOs_FHEDkaAmPfEALw_wcB
If its not a crack, then maybe its where hot gasses blowtorched over to the other cylinder.
Still i'm not sure if you can take enough off the head to get past it, and still be in spec.
The block is not looking good, I wouldn't not put another dime into that one. +1 on a new short block.
That's one heck of a blowout. Maybe it could be re-surfaced if it's not too deep. Sometimes pictures make things look worse than they are. It is always a sinking feeling when a simple head gasket job turns into a major overhaul.
Of course, if you choose to rework the block surface, it is sometimes possible to not overhaul it. Takes some care to pull that off, but if parts are in acceptable condition for re-use, it may work.
A rebuilt short block has probably also been resurfaced.
Of course, if you choose to rework the block surface, it is sometimes possible to not overhaul it. Takes some care to pull that off, but if parts are in acceptable condition for re-use, it may work.
A rebuilt short block has probably also been resurfaced.
Thanks for all the responses. He ordered a complete engine from Hybridpit. It should be delivered some time next week.
Admins, you can lock this thread. Thanks.
Admins, you can lock this thread. Thanks.
I have heard mixed reviews about those guys. Best of luck.
Never really experienced it myself, but I've heard of piston skirts collapsing due to severe overheating which is a possibility for that engine. I think you made the right choice. A rebuilt engine seems to be the proper path.
I thought it was common knowledge
But generation 3 Prius 2010-2015+ (V was made as g3 longer) all have defective motors that fail randomly in this way sometime after 100,000 miles.
Lots of blown head gaskets and all the symptoms described.
Toyota used a redesigned ring in 2014+ g3 but there is evidence it’s just a bandaid.
Tons of information on this on priuschat.
Most folks who run g3 big miles
change oil often, go up a grade oil, use a catch can and clean the egr system as maintenance
Worth noting the Gen iv motor will swap into a g3 with some work, if labor is free it saves money and may be a better long term investment.
As for your motor if your labor is free and you already have the work and materials in it just slap a double head gasket on, go down a plug heat level (cooler plugs) on the defective cylinders and try to drive it.
You may get 20,000-30000 miles giving you time to get the best possible motor which might be a 2016+ Prius motor as another full 2010-2015 g3 motor will just repeat this process sometime randomly after 100,000 miles
Last edited:
Post back when you get the engine in?
Agreed--how did this turn out?
What Happened?
Block is done. Head should also be resurfaced as well.
Your best route at this point is a junkyard motor. Those are a pig in a poke but Toyota new isn’t going tk be viable economically particularly if money is short.
Good luck with it - I know you are helping a friend but don’t want to see you throw away time and money.
Similar threads
