Prius Pistons

[JustDidIt]

Originally Posted by why?

I remember reading the highest the Prius ratio ever gets is 11.1. The atkinson cycle keeps both the intake and exhaust valves open for long periods of time.

Wonder what kind of performance increase could be expected as going from the 10.5:1 to the 11:1 or whatever the CR would be..

When I do the Cam and Cam gear swap I would basically have the 1NZ-FE head but still the Prius bottom end. Where someone else with the 1NZ-FE would have to tear into the block and switch the pistons but hopefully leaving the stock 1NZ-FE crank. The 1NZ-FXE Does have different pistons and crankshaft but same rods. Would be really interesting to see if there would be a difference it would make between the 1NZ-FXE and 1NZ-FE crank obviously other than part #s being different..