1nz-fe and 2nz-fe

[leinadeb]

Hi, i would like to know if the height of the engine block are the same and if it is possible to put a 1nzfe crank shaft in the 2nzfe engine to gain same power. Thanks.

[Bluevitz-rs]

Why not just swap the whole 1NZ block?

[Parmas]

Hi, i would like to know if the height of the engine block are the same and if it is possible to put a 1nzfe crank shaft in the 2nzfe engine to gain same power. Thanks.

If you google out you will notice that the 1NZFE is stroked higher than the 2NZFE thus block is definitely not the same size.

Why would a stock crank swap increase hp?

[Yaris Hilton]

Because commonly different strokes are accommodated in the same block by using different cranks and pistons to reach the same deck height. That's what he's asking, if the 2NZ-FE block can be stroked to make a 1NZ-FE engine out of it. A reasonable question.

[Bluevitz-rs]

If the blocks are the same, you'd probably need crank, rods, and pistons to make it work. Then the matter of bearings, rings, re-hone block. It would be much simpler to swap the block for a 1NZ.

[Climber]

Engine 2NZ-FE
displacement (cc) 1298
Bore and stroke (mm) 75.0 x 73.5
Compression ratio 10.5:1
Max. output (kW(HP)/rpm) 63(85)/6000
Max. torque (Nm(lb/Ft)/rpm) 121(89)/4400

Engine 1NZ-FE
displacement (cc) 1496
Bore and stroke (mm) 75.0 x 84.7
Compression ratio 10.5:1
Max. output (kW(HP)/rpm) 80(110)/600
Max. torque (Nm(lb/Ft)/rpm) 141(103)/4200

Engine 1ZZ-FE
displacement (cc) 1794
Bore and stroke (mm) 79.0 x 91.5
Compression ratio 10.0:1
Max. output (kW(HP)/rpm) 89(120)/5600
107(140)/6400
Max. torque (Nm(lb/Ft)/rpm) 165(122)/4400
Dimensions(LxWxH mm) 639x565x62

[WolfWings]

The 1nz versus the 2nz isn't like the DSM 4G6-series engines where they had a variety of bores AND strokes (1.6, 2.0, and 2.4 blocks were all mix-and-match, crank adjusted it by 0.3, block/pistons by 0.1 per step) so mix-and-match cranks had a use to avoid dealing with re-boring a block.

The Yaris blocks? Eh, just get a complete crate used engine to change between the two, you're only adjusting the stroke and the bore's the same between the two.