Frankenstein Engine

[speedworxs]

Originally Posted by Neinris

I actually follow that guy, and that's exactly why I brought the idea. I had thought of putting a 2AR-FE in my Yaris, but I hate the fact that the exhaust header would be next to the radiator, although I believe that it's feasible, and the subframe already has a channel for the exhaust pipe. I even thought of putting a 2GR, but that's just too much.

What makes the 2ZR-FXE have higher compression, is it just the pistons? If so, would it be possible to take a 2ZR-FXE's piston, mate it with the 3ZR-FAE's short block and use a 2ZR-FE's cylinder head? Is it too much work for only some gain?

What about just a 2ZR-FXE reverted to an FE for higher compression application? Supposedly the generally accepted gauge for adding compression is that one full point of compression can add between 3 to 4 percent power, so that's roughly 9-12%, so average 13HP gain.

the 2zr is going to be your best bet, if you like the way the yaris handles now, the weight increase will be very low
the pistons will be the compression increase if nothing else has changed - i recommend a short block and swap cams; thats the route i'm going with on my 1nz-fxe. then you don't have to resize anything (bearings, rings, and redo gaskets)
given the increase in power on the 2ar, i bet the 2zr could be a strong 40hp increase... but don't forget the 2ar in the video is using a tuned ecu, and you would need similar to make the best out of any engine