2012 Prius 3rd to 4th Gen Motor Swap How-To

[@hussainjamali2207]

Great work. If you can share coolant hoses diagram that, ll be good for people who are interested in swaping gen4 motor

[@troybonner91]

You don't really need to space out the bolts for the EGR to the engine... the bolts holding it to the pipe leading to the intake manifold, and the bolts holding it to the pipe leading to the exhaust manifold are enough. You do need to cut off a little flap of aluminum that is in the way of the EGR, at the front of the engine.... that way there is no need to "modify" the exhaust manifold pipe, and it fits perfectly with the intake manifold. Watch the "Fix That Prius!" channel, because there really is a better/simpler way of doing this. Btw, you waaay overfilled your coolant reservoir. That can affect the pressure of the system.

[@Incandescentiron]

I really needed this information. Thank you for posting!

[@jimolson5018]

Great video!. I just cleaned the damned EGR path on my Gen III. It was a two weekend effort, with me constantly groaning that Toyota engineers believed the cooler would remain unclogged for more than 100k miles. I'm very surprised that Toyota preserved the EGR system's basic design in the transition from Gen III to Gen IV.

[@paullopan]

Very good and easy to understand explanation. Is also great for those who want to know about Gen 3 engine (only) removal. AAA+++

[@jdmodsgarage]

Thank you for the positive feedback! Glad you liked the video :)

[@berenjena4998]

Fantastic video, very informative! Thank you so much!

[@123Danielboyd]

Positive Crankcase Ventilation on your Valve cover?

[@priusgame1178]

Do we know how long some guys have gone with the engine swap? I want to try this out I'm curious if anyone really just had the engine or transmission give out because of the swap in short time. Thanks and anxiously waiting for your response

[@ProximoNovio]

What oil filter do you need? New engine has a filter instead of a canister

[@Incandescentiron]

I needed short and sweet!

[@ggunnerr70]

Cool swap. I have some questions- is the 4th gen better power and mpg? I have a prius C 1.5 L what could I possibly swap in..Any ideas? Are there any sites/Channels to get ideas like this on the regular? Thanks for your time

[@limkisoo]

Wonderful video! Thank you so much!

[@blindluckmechanic876]

I’ve read the 4th Gen EGR flows better then 3rd Gen which can cause check engine codes. I wonder if your code for O2 sensor was because of this?

[@iamahood1]

Thanks for the video. Did a new O2 sensor fix the code? How much did the 4th gen block cost? Also. How far north are you? I’m in the Fairbanks Alaska area and the dealer has recommended against a block heater for the engine as they’ve said that it causes the transmission wires to get melted requiring a full replacement of the CVT. They’ve said an oil pan heater and 12 volt charger for the aux is plenty. I’m wondering if you’ve done any more to winterize the motor or transmission and if you’ve done anything to winterize the NMH battery? It’s been starting fine but that’s the NMH batteries job isn’t it? If so the battery should be overkill and I might not notice a problem until it’s too late.

[@leetran5533]

Hey im looking for a gen 4 engine for my 2013 prius v..... Do you have the 5th, 7th, and 8th digits of the Vin of your Gen 4 engine you bought?

[@josegarcia-th3pj]

type of pipe use for the lower radiator hose

[@MikeVentures]

More power or mpg noticed?

[@josegarcia-th3pj]

after you change, you were not having problems with the bleeding and burp?

[@JoseGarcia-px9xj]

there's no bolts from the flywheel to the transmission

[@loanguy6193]

I'm sure it will NOT California pass smog right?

[@inesdelgado1399]

Does the flywheel assembly have alignment marks or does it just bolt on? Thanks

[@metrork1]

It is keyed

[@priusgame1178]

Will the engine modifications pass a smog check visual inspection? Asking from California but I'm curious if anything really would warrant a red flag that would fail a smog check

[@jbek9779]

Everything is stock from gen 4 should not be a problem.

[@priusgame1178]

@@jbek9779 confirmed with another buddy that has done 5 swaps for his fleet line and says no issues passing smog yet.

[@jbek9779]

@@priusgame1178 wow that’s awesome. I spoke with a mechanic specialized engine swaps. But he said never did a such upgrade. Buy he said he should be able to do it. I just bought 2019 prius engine with 37k mileage - will be doing it this week. Hope everything goes well.

[@priusgame1178]

@@jbek9779 the trick is to focus on the coolant lines and that there's no pinchpoints. He succeeded on 2 cars but they kept overheating because of small coolant line pinch points and air pockets. Be careful driving it on the freeway right away because you need to make sure it's no overheating. Take scan tool with you to monitor temperatures. He says he drives harder and no check engine lights at all.

[@sanjuan240]

I’m curious if it really does get better gas mileage. A healthy gen 3 will get around 44mpg. You should do the head gasket on that gen 3 and sell it. It’s super easy.

[@LamzLamz714]

Yup I just got mine done this weekend...but this video is really misleading to throw in a 4th gen motor into a 3rd gen frame...theres alot this guy is missing...

[@troybonner91]

@@LamzLamz714 There's a lot he left out, and there's a lot of unneeded steps he added in.

[@itsdouglasjohnson]

@@troybonner91 would like to know what

[@itsdouglasjohnson]

@@LamzLamz714 you got a write up? Im interested in this swap!

[@troybonner91]

@@itsdouglasjohnson Fix That Prius! has a 15 part series on his Prius engine swap, in which he goes into great detail about it. It's the videos I used primarily to fix mine. kzbin.info/www/bejne/Z3Owe3-rnaZ3qas

[@JeremyYeung]

Thank you for the tips

[@jwade94544]

I have a 2012 Toyota Prius V as well I had to change with head gasket everything else in the engine was good the 2012 when the Taurus to have a head gasket problems the manufacture didn't do a good job at that time

[@Adrianlandl86]

Do you have a better view of how you ran the coolant lines. I did the swap but can’t seem to figure out why I’m not getting much heat from my heater core. I made some modifications and increased the heat output but I’m wondering if I have the flow backwards or something through the egr and cat.

[@jbek9779]

Did you figure it out?

[@dmvjdmmotors]

@@jbek9779 have you figure it out yet bro?

[@dmvjdmmotors]

have you figure it out yet bro?

[@thebitlot]

Do you know if it's possible to put a 5th gen M20A-FXS in a 3rd gen engine compartment? I'd like to put a fresh engine and battery pack into an old prius (abt 10 years) rather than buy a new one.

[@kkmestrada]

Where is the link you mentioned about the procedures how to swap Prius engine? I have 2010 Gen3 needing new engine. Thanks

[@XTheJenovaProjectX]

My 3rd gen just threw a rod and I need a new motor also. Haha

[@Eveningkiss]

@@XTheJenovaProjectX common issue. replaced the heads on my 2010 in January and it STILL threw a rod through the engine so I'm looking at a new engine preferably a 2016.

[@XTheJenovaProjectX]

@@Eveningkiss I would do extensive research before jumping into this. I did the entire swap and it ran but had lots of coolant/high temp issues. Then when I called a Prius specialist shop for help, they said putting the 4th Gen motor in it is not good. It will “run” and “work” but they said in the long run the timing of the 4th Gen motor and the 3rd gen computer will eventually cause issues.

[@kumara5492]

@@XTheJenovaProjectX Oh no. I was thinking of swapping my Prius V 2012 something like this, but, I am looking into converting it into regular gasoline car by transplanting entire organs with Toyota Yaris engine. Will Toyota Corolla engine fit in Toyota Prius V? I am done with this complex hybrid technology. Thank you

[@jbek9779]

Did you find the link if you still have it can you share it?

[@josephmartinmercado7032]

I'm also replacing my 3rd gen prius engine to 4rth gen. I would like to know what issues you encountered after replacing your engine ? Does the car still running after two years? My mechanic is a bit skeptical about the extra coolant line that you covered

[@jbek9779]

How did it go for you?

[@ssm3378]

@@jbek9779 I am close to Toronto and would to come by to swap my Gen3 with Gen4

[@thetintco8404]

Hats off mate.

[@JoseGarcia-px9xj]

did you ever have problems with misfires. when I swap the engines, is what I have I wonder if some of the sensor surround it the engine are not totally compatibles

[@blindluckmechanic876]

4th Gen EGR system isn’t compatible on 3rd Gen ECU

[@limkisoo]

Did you have to refill the AC gas? Thanks

[@shaunkim8517]

안녕하세요 :) 혹시 3세대에 4세대 엔진 스왑 하셨을까요 !?

[@josegarcia-th3pj]

I follow the steps of another guy for swap 4 gen into 3 gen, but I thing we made a mistake using galvanized pipe for the lower radiator hose. after around 10,000 miles my hot engine light sometimes turns on, what do you use for la lower radiator hose

[@jotham123]

Do be careful of mixing metals. Look up a galvanic corrosion chart to understand the metal compatability.

[@gangstar565]

Did you cover everything seems a little easy. ?

[@jdmodsgarage]

Yes it was honestly a pretty straight forwards swap

[@user-ks9ww7dg3r]

Does the 2016+ 2ZR engine have the oil consumption issue fixed vs the 10-15 models 2ZR?

[@jdmodsgarage]

Seems to so far! Very little oil consumption compared to the old motor

[@21boxhead]

SOMETIMES IT'S BETTER TO JUST HAVE THE ENGINE REBUILT

[@sklyrovka]

@@21boxhead nah.

[@21boxhead]

@@sklyrovka IF YOUR A CHEAP SKATE

[@sklyrovka]

@@21boxhead no I'd much rather have a Toyota built motor than some random machine shop

[@kumara5492]

excellent

[@gmongrel]

How much for new motor? How much would you charge to swap my 2013 prius 3 to the 4th gen motor.

[@climbers1376]

I'm interested too! ASAP

[@jdmodsgarage]

Sorry I have a full time job so I can't help aside from making videos. If your located in Ontario, I have someone else who may be able to help!

[@ssm3378]

@@jdmodsgarage I am close to Windsor. Would like to swap with Gen4. Would appreciate any help.

[@luisjauregui1272]

You ever have any problems with stalling at stop lights?

[@jbek9779]

Are you having issues after gen 4 swap?

[@iamahood1]

We’re you able to keep enough of the forth generation to see the economy improve?

[@metrork1]

It has been stated

[@leetran5533]

I can't find a prius prime in 2016....

[@SIMPLEGUY423]

head gasket for 4th gen will last longer

[@troybonner91]

I mean... I just used the Gen 4 fuel rail and injectors. Why did you swap yours??

[@jdmodsgarage]

It didn't come with the motor.

[@itsdouglasjohnson]

@@jdmodsgarage i was wondering if there was a benefit to use the gen4 or gen 3 fuel rail. Im very interested in this swap

[@jbek9779]

How is your prius running after swap? No issues?

[@hussainjamali2207]

Can you put hoses connection diagram to better understand

[@russmarchuk4290]

Any progress with the 02 sensor code?

[@jbek9779]

Where did you see he is having o2 sensor issue?

[@russmarchuk4290]

@@jbek9779 he states it @ 8:10

[@blindluckmechanic876]

@@jbek9779 it’s a real thing. Folks don’t believe the 4th Gen EGR is different but believe me it is. I’m 3 months into a 4th Gen long block swap into my 3rd Gen with no engine codes. Youu must use 3rd Gen EGR if swapping to 4th Gen engine

[@davidhenry4265]

Damn I never knew they get bad headgasketsb

[@climbers1376]

It's true. Common in Subarus too or any aluminum hybrid engine that constantly expands and smaller

[@hedgehogthesonic3181]

@@climbers1376 Well that is not the case with the Prius C [Aqua], or gen 4 Prius.

[@GEAUXFRUGAL]

I have a 2012 prius V has a salvage 2017 engine. The new engine has

[@metrork1]

Prius is stated to tow nothing

[@GEAUXFRUGAL]

@@metrork1 I towed with my 07 and never had issue. Towed a trailer from E Ga- Baton Rouge LA.

[@claudettehogan4788]

How do you register your 2012 prius with a 2017 engine w/25k miles? I'm interested in replacing my 2013 prius with a newer generation, as well. Didn't know you can add a 2017. Sweet.

[@jellnay2636]

It won’t start after engine swap what I have to do

[@jdmodsgarage]

You need the Toyota TechStream software to reset the ecu. You can get the cable and software off of Amazon for around $50.

[@jbek9779]

Were you able to start /fix it?

[@naailable]

Awwww thought you were gonna K swap it 😂

[@xxJhamilxx]

⁵⁵⁵5⁵

[@user-ks9ww7dg3r]

They got them k swapped...pfi just had a video on a second gen Prius k swapped turbo... perfect sleeper

[@cameronthornton6624]

What the hell do you do for a living???? I’m 18 I just really want to be in cars for my life. But I’m broke. I want to do this with my life

[@jdmodsgarage]

I was in school until recently and have just been good at saving. Now I'm a mechanical designer and can buy some real car parts :)

[@apassionfortangling3671]

It's the same engine, you're not gaining anything by swapping to a 4th gen 😉

[@reocam8918]

nope pcv position modified

[@leitberatch6160]

Youre gaining a ton lmao. Must not have a high mileage 3rd gen

[@gusone203]

Waste of labor. Many other easier options. Learn as you go.....

[@priusgame1178]

What are easier options? I'm wondering if the head gasket job once fixed and water pump is that enough? I would think thrown rod would be because the piston finally gave out