If Rebuild, what parts to rebuild to ensure longevity?

Say you wanted to rebuild a bad Prius motor that was starved of oil and sounded like a model t with lost of power.

You had the motor out of the car already, what would you buy to rebuild the motor? Oh, and you knew it was burning 5qts of oil every 1,000 miles after a new head gasket was installed. What's your list of need to haves? Safe assumption you'd get the block resurfaced as well? Asking for a friend!

 

have a 2.0l I'm installing in mine, I want to rebuild old motor and put into my brothers gen3 that has bad head gasket... not afraid of a little work is mainly why. just need to know what I should be replacing.

 

well this is more of a what all to rebuild where block has no holes and its sent off to check and its in spec repair parts list. His plan is to start buying the parts as his checks come in to have ready when I have time. lol less about being done quickly, more on when we put this in his car we want it to go at least another 120k.

really, just rings, valves an head gasket? hmmm.

 

One of the many things about the internet I chuckle at, folks tend to not directly answer someone's question as it relates to getting them where they seek to go. sure the path they chose might not be the one everyone would take... No matter the path they chose to go, I'd like to think I'd forgo imposing my thoughts on the path I'd take to get there and just assist with what they are asking... I mean, someone wants to drive to the east coast and take the route along the edge of USA, I wouldn't say you should drive through the middle, it's faster...

That said, the ask was so I don't miss anything... when I did my head gasket, I wasn't aware of the piston ring issue with the motor, is how my motor got to where it is now. So now, to rebuild for family, I am trying to make sure I don't miss anything this go around opening this motor. I'd also like to see of way to close chamber around cylinder walls so it can be bored out. Found a company that does it...

So for me, taking a block to be laser scanned to determine maximum bore size it can safely handle... which I've done already with a fresh undamaged block not mine, I am not opposed to what rebuilding takes, just need to know what it takes in terms of parts at this point... so I don't miss something.

I take it you aren't aware of some of the things I've done or in the process of doing in this bubble we call prius? The cost of peace of mind is priceless to me, I'm not buying another engine to hope I get miles out of it.

 

Plus, I want to see if the parts we are buying from another similar motor will work out to increase power. I'm really trying to get more power and see where mpgs land after achieving the power gains I'm seeking.

 

Thing is, seeking a funding source isn't what I need, more time in a day is what I need.

I'm looking for a way to solve the defects of the motor, not by rebuilding them but to have a new block made so folks like gasket masters can install when they go in to add a new gasket. Hence a rebuild so I can 3d scan the insides... if can be done I'd like to have that bottom end in the 1.9l range or 2.0l with modified cooling channels.

Plus, I've been intimate with a prius prime with my car still being down, sure inverter, pressure plate and exhaust manifold are a few external differences... in the end its the same motor internally I believe. But to get to any facts I need to fully rebuild one once.

 

Oh my wow, see... this is what I was looking for!

Basically, cracked the pil pan days before new metal engine splash guard was ready to put on. We were offroading at Azusa canyons, made it all the way in then on the way out, last river crossing the almost 12" of ground clearance was flawless until I felt tire slip off rock then "whack"... I'm looking at drone thinking that's now water... if you are familiar with a Azusa canyon, by the third good Samaritan who pulled me to where I thought the top of the ridge was for me to coast all of the way down. We sat at CVS trying to find oil pan. By this time light knocking. After oil pan replaced, 1-2 bolts damaged and the jb weld didn't cure right as a patch. Few days later forgot needed to baby it, drove my normal Toretto way and knocking became louder.., tried even diesel oil to help lub but it had gone dry for too long. Day or so later lack of power when not in plugin ev mode and using the gas motor. By the time it got to where I removed the motor, no power from gas engine.

Egr, injectors, pumps... all that jazz replaced/cleaned already.

So pistons have to replaced with new rings... hmmmm

I'm taking notes on this now to come up with the list based on your words.will share once I have it all lined out

 

Almost, waiting on custom parts now

 

thing is... I'm further along in the process then this response gives me credit for... just need to get the block 3D scanned. There is a solid set of folks assisting with where we are trying to go. Just I didn't want to bog them down with a question like this thread was created for.

the crazy ideas is what's been missing, when folks such as yourself shoot them down, others more timid than I get discouraged and thus we are in the same place the Gen 3 has been... stagnant... two of the three remaining parts to the engine swap I'm doing took more time and work than I anticipated, mainly due to learning curve I went through so the motor mount, engine to cvt adapter an new "flywheel" could be produced. the final is the ux250h oe exhaust manifold... freakin $1300!!! so, once its bolted and I handle ecu tweeks to resolve most codes, ill sell my cat and then purchase the new... to then tackle the remaining codes if any.

 

thank you and hence why trying to put thought into this rebuild... using the camshaft no. 2 and crankshaft from another motor will be used in the rebuild as well.