The 1.6-liter Toyota 1Y carbureted engine was produced by the company from 1982 to 1991 and was installed on Town Ace minibuses, Toyo Ace delivery trucks or Hiace Trucks. There was a version of this engine with an exhaust cleaning system with its own index 1Y-J.
The Y family includes engines: 1Y, 2Y, 3Y, 3Y‑E, 3Y‑EU, 4Y, 4Y‑E.
The engine was installed on:
- Toyota Hilux 4 (N50) in 1983 – 1988;
- Toyota TownAce 2 (R20) in 1983 – 1992.
Specifications
| Production years | 1982-1991 |
| Displacement, cc | 1626 |
| Fuel system | carburetor |
| Power output, hp | 84 |
| Torque output, Nm | 135 |
| Cylinder block | cast iron R4 |
| Block head | aluminum 8v |
| Cylinder bore, mm | 86 |
| Piston stroke, mm | 70 |
| Compression ratio | 8.8 |
| Features | OHV |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 3.5 |
| Fuel type | petrol |
| Euro standards | EURO 0 |
| Fuel consumption, L/100 km (for Toyota Town Ace 1984) — city — highway — combined |
8.5 6.1 7.2 |
| Engine lifespan, km | ~250 000 |
| Weight, kg | 140 |
Disadvantages of the Toyota 1Y engine
- The engines of this series are difficult to repair, and also have a lot of original components;
- It has its own sophisticated carburetor and a specific ignition system;
- The whole life of the owner of a car with such an engine passes in the fight against air leaks;
- The oil filter is located upside down here, it is difficult not to get dirty when replacing;
- On long runs, oil consumption often appears up to 1 liter per 1000 km.
Is it possible to replace 1y engine with 4y on hiace truck body
i have a hiace truck 1985 model
it is misfiring on acceleration
may i know the possible causes
may i know also the timing setting xx degrees before TDC
thank you so much