Jdm Prius engine

Bump. I have the same question. Any experts? @bisco @Tranhoang21 add some tag to your post to see if we get some answers

 

Do a site search on JDM engines..

 

I just installed a JDM prius engine on my Prius 3. I can already tell the day and night power difference...

Going back to March 1st, a week after purchasing the 2012 Prius III. I had not diven it for more than a week when the Rod blew out of the block...Wth!!! The car had 224k, did not make any engine noise, no smoke, nothing before this had happened.

Any how, i will tear the old engine apart on the weekend to investigate what caused the Rod to snap in half.

 

My engine just self destructed dramatically a few days ago. 2010 w 192K. The engine seemed to be running fine other than an occasional cylinder #2 misfire code. I didn't note any loss of coolant, white smoke, or really any unusual behavior with the engine. Seemed very smooth. Looking into a JDM engine too. Would be curious to hear from anyone who installed a JDM engine, and how their experience went.

 

Hey bud did you had to swap anything from the old engine into the jdm for it to work?

 

The ZVW30 series engines, be it a JDM or US market directly interchange with each other. Things get hairy when you try cross generational swaps. 2010-2015 Prius and the V (wagon) Prius engines are highly sought after and even with lunar miles get a premium price, generally speaking. This is due to the propensity to blow head gaskets, and burn oil.

The 2016 and up engines, since most of the cars are such low miles, are normally less expensive. HOWEVER, they require “adjustments” to work. It can be done, but it’s all in how much work you want to do. I got a very low mile 2016 engine, and due to the differences in the cooling system plumbing, rebuilt my Gen 3 head with the Gen 4 valves and such. 213k at install, now showing 238k. No issues at all.

 

The cooling inlet/outlet are different from Gen-3 to Gen-4?

Not having done it, I assumed if you just swapped over the longblock from a Gen-4 as one piece (head, block, crankcase) into a Gen-3, that the intake, exhaust, and cooling would bolt right up? No?

 

If using only the short block assembly, they are a direct swap Gen 3 to 4. The head casting, EGR cooler, and catalytic converters are different. But the internal parts of the head (valves, cams, springs) are the same too.

 

OK. That makes sense. How different are the castings between Gen 3 & 4? Isn't it just coolant coming in/out of the head that needs to be addressed? Or are the oil feed/return passages not compatible? What else needs to match?

 

The outlets are pressed into the Gen 3 head. On the Gen 4 head, the water outlet bolts onto the head.

 

Interesting.

Thanks!

 

what supplier did you use?

 

this is an older thread, but I'm looking at JDM engines for my 2011. What supplier did you end up going with and how did it work out? Any advice in retrospect?

 

i'm in the same position needing a new engine for the 2011. What supplier did you use? I'd like to switch the GEN 4 into my gen 3, but my mechanic is not all that familiar with Prius. Do you think that would be a problem?

 

can you help me understand what this means? I'm going down the rabbit hole to help my mechanic with the swap.

trust me there's nobody where I live early who can do this with expertise. So just help me understand this. For a straight swap out, without having to modify out hoses, clips , etc. Would he swap out the long block? Or swap out the short block. I clearly don't know what each one does, I'm just trying to understand, what would be the easiest way for my mechanic to swap a GEN 4 into a GEN 4. Thanks