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Toyota 3RZ-FE specs: 2.7L (164.4 ci) 4-cylinder, 95 x 95 mm (3.7402 x 3.7402 in) bore and stroke, 9.5:1 compression. Rated 150 hp, 1994–1998.
The Toyota 3RZ-FE is exactly square — 3.7402" bore and 3.7402" stroke are the same — which splits the difference between a high-revving layout and a torque layout. The 3.7402" stroke puts mean piston speed at 4,000 ft/min around 6,400 RPM, which is where a production bottom end is generally considered at its limit. Each of the 4 cylinders displaces 41.1 ci (674 cc).
9.5:1 on aluminum heads is in the range that usually runs on pump premium; aluminum sheds heat faster than iron, which makes the same number a little more forgiving.
It is one of 3 engines in the TR family, all of them 164.4 ci — the differences between them are in compression, heads and rating, not displacement. 5 factory variants share these dimensions, rated at 150 hp across 1994–1998.
| Displacement | 164.4 ci / 2.7 L |
|---|---|
| Bore | 3.7402" |
| Stroke | 3.7402" |
| Cylinders | 4 |
| Configuration | I4 |
| Compression ratio | 9.5:1 * |
| Bore/stroke ratio | 1 |
* Compression ratio from a single source; not yet cross-verified.
| Block material | cast iron |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Firing order | 1-3-4-2 |
| Advertised HP | 150 hp |
| Years | 1994–1998 |
| Bore/stroke character | 1.000 — square — bore and stroke are within 5%, a balanced compromise |
|---|---|
| Mean piston speed at 6,000 RPM | 3,740 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 41.1 ci |
| Static compression | 9.5:1 — in the range that usually runs on pump premium |
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 1994 | 150 hp | 3RZ-FE |
| 1995 | 150 hp | 3RZ-FE |
| 1996 | 150 hp | 3RZ-FE |
| 1997 | 150 hp | 3RZ-FE |
| 1998 | 150 hp | 3RZ-FE |
3 factory vehicles, 1994–2004. Each year opens that model's engine table.