2ZR-Fe swap

Usually this is just referred to as swapping a Gen3 Prius engine for a Gen4 engine, which is the best long term solution for a gen 3 Prius. There's plenty of youtube videos. As far as I can tell the engine type you want to switch to is pretty much the same as Gen3 to Gen4, but maybe you have something else in mind? If so the biggest hassle is overcoming all the prius sensors sensing stuff they aren't familiar with and red triangling you. Toyota Racing Design (TRD) have done all kinds of engines in Prius, but they have access to source code and can change settings, we can't. Spoofing sensors is primarily how us DIY folks do it. But check with black_jmyntrn | PriusChat as he's putting a Lexus engine in his Prius Prime and might be able to help.

 

is the 2zrfe gen4 prius? i googled it but came up nada. i thought he was looking for crazy performance

 

In my searches I found some indication that it's a Gen4 Prius Engine. But there's no reply from OP yet, so this is yet again likely a newbie starting a conversation that they never return to, which leaves us talking amongst ourselves again. <sigh>

 

2ZRFE is the NON hybrid engine used for ICE only cars. The FXE is the Atkinson hybrid engine. OP is asking if he can swap out the FXE Atkinson for the FE Ottoman. The answer, I'm am NOT an engineer but assuming the dimensions are the same and the flywheel can be attached to the transaxle the same way the yes you probably can.

HUGE CAVEAT, the FXE was designed for the transaxle meaning that Toyota engineers looked at the torque provided by the FXE and factored in how the motor (what drives the wheels) would handle that input. It is possible the extra torque from the FE may not be mitigated properly.

Again I am NOT an engineer.

 

So what's it in? A Corolla? The engine nomenclature is hurting my head.

 

Yes, that's a Corolla engine. It's substantially the same engine, but with totally different tuning and controls, variable exhaust timing. Higher power and torque, which will be a problem (as drbtz said)..

 

I know the letters and etc are all over the place. The Corolla and Camry stock versions use a 2ZR-FE engine. The hybrid versions of the Camry, Corolla, and Prius use the 2ZR-FXE. They are essentially the same engine but the FXE uses an attkinson cycle meaning it's primary concern is I'm energy efficiency (it no go zoom). The FE uses ottoman or old timers might just say conventional timing, it's made for performance in mind when the throttle is down all the way.

Basically the FE does what it does because it utilizes a cycle that produce peak horsepower were as the FXE produces peak efficiency because the drive motors help make up for the lost HP.

 

I can't imagine the drive motors handling that kind of torque and would likely break the input shaft on the motors I would assume. You'd be going from what, 90HP to 190HP or something akin to that.

@ChapmanF is usually pretty knowledgeable on the tech specs of this kind of thing so maybe he could inout some additional feedback.

 

The Prius has lots of sensors and finely tuned computer settings to maximize MPG. Change those settings even just a tiny bit with different parts and you get warning lights and likely hybrid system safe mode. Change those settings a huge amount with a more powerful engine and you get way more warning lights. And as I said before, you have to fool those warning lights to stay off because Toyota won't give us the ability to change those settings. Here's what's possible with a Gen2 Prius if you get Toyota to help with that part:

Excerpt from TRD 2004 Press Release:

"The Toyota Prius GT’s Hybrid Synergy Drive powertrain has been specifically tuned to deliver
sportscar performance. The standard Prius Atkinson-cycle petrol engine has been replaced by the
1.5-litre Yaris T Sport powerplant, which provides better response and increases power by 29 per
cent, from 76 to 98bhp.

The electrical part of the hybrid system has also been uprated. The High Voltage Power Circuit
now develops 550V, a gain of 50V compared to the street version. This allows a more powerful
electric motor to be installed, developing 81bhp on its own – an output similar to that of a
conventional 1.4-litre petrol engine.

To cope with the extra power, the battery has been upgraded to develop 45bhp (a gain of 12bhp)
and the generator’s maximum speed has been boosted from 10,000 to 12,000rpm. The state-of-
charge control has also been tuned to provide more rapid racecar-like response rather than to
maximise the car’s range.

The 1.5-litre engine, in conjunction with the electric motor (which can be compared to an electric
supercharger), now returns 143bhp, a figure that beats every other 1.5-litre diesel or petrol unit
currently on the market. In addition, specific power comes close to 100bhp per litre."

 

What @PriusCamper said is ultimately what I'm getting at. There's no way that the engine is going to be drop and replace. Higher power is more charge and now the various regulators and sensors need to know how to handle that. More toque means checking existing part rating to ensure no snapping or sheering.

Don't get me wrong this is a cool project but if it were this easy wouldn't Toyota make a "Sport" Prius considering the large culture surrounding Prius modification?

 

Not THAT drastic. More like from 97 to 132 hp. Base Corollas aren't known as super-high-perfomance cars.

 

How dare you, I bet the 0-60 time is only 10 seconds.... Downhill....

 

Since money is no object, why not just buy a camper?

 

IIRC somebody was talking about putting Corolla engine cam shafts in a Prius?