Toyota Y engine explained
The Toyota Y engine is a series of overhead valve straight-four petrol engines manufactured by Toyota from 1982 through 1996. The Y engine has mostly been used in commercial and off-road vehicles.
The valve arrangement from the Toyota K engine is interchangeable with this engine.
Translated from Japanese Wiki
1Y
There is also the 1Y-J, with the "J" suffix meaning that the engine is built to meet emission standards for light commercial vehicles.
- OHV, eight valves
- Displacement: 1626cc
- Bore × stroke: NaNmm
- Reference output: 840NaN0, 13.8kgm (gross figures, apply to both 1Y and 1Y-J)
Applications:
2Y
The 2Y engine is an OHV, eight valve construction just like the 1Y. It shares that engine's 86mm bore, but stroke is increased to 78mm for a displacement of 18121NaN1. There are also 2Y-J and 2Y-U engines with differing emissions control equipment.
- OHV, eight valves
- Displacement: 1812cc
- Bore × stroke: NaNmm
- Compression ratio: 8.8:1
- Reference output (2Y): 790NaN0 at 5,000 rpm, 14.3kgm at 3,200 rpm (net)
950NaN0, 15.5kgm (gross)
Applications:
2Y-P
- OHV 8 valve (LPG)
- Displacement: 1812cc
- Bore × stroke: NaNmm
- Specifications: 700NaN0 4,600 rpm 13.5kgm 2,200 rpm (net)
850NaN0 5,000 rpm 14.5kgm 3,000 rpm (gross)
- LPG
Applications:
- Toyota Corona (YT140)
- Toyota Mark II (YX70)
3Y
There is also the emissions cleaned 3Y-U engine. A version of the 3Y is built by the Shenyang Xinguang-Brilliance Automobile Engine Co. in China as the 4G20B; this engine meets the Euro IV emissions standards.
- OHV 8 valve, carburetted
- Displacement: 1998cc
- Bore × stroke: NaNmm
- Compression ratio: 8.8:1
- Reference output: 880NaN0 at 4,800 rpm, 15.8kgm at 3,400 rpm
Applications:
3Y-C
This is the low emissions carburetted motor with catalytic converter exhaust system
- OHV 8 valve
- Displacement: 1998cc
- Inside Bore × Stroke: NaNmm
- Compression ratio: 8.8:1
- Reference output: 850NaN0 at 4600 rpm, 15.8kgm at 3400 rpm
Applications:
- LiteAce XTRA TRACK Wagon (YM40-RGMDSQ), (YM41-RVMDSQ)
- Toyota Townace Van (YR39)
3Y-E
- OHV 8 valve, fuel injection
- Displacement: 1998cc
- Bore × stroke: NaNmm
- Compression ratio: 8.8:1
- Reference output: 970NaN0 at 4,800 rpm, 16.3kgm at 3,800 rpm
Applications:
- Feb 1993 - Apr 1997 Toyota Mark II (YX78V, fifth generation)
- Aug 1988 - Dec 1995 Mark II (YX80)
- Apr 1989 - Aug 1991 Hilux Surf (YN130G)
- Daihatsu Rocky F80, F85 (Australia 1988 model year only)
- 1996 Toyota Classic
3Y-EU
- OHV 8 valve, fuel injection and emissions equipment
- Displacement: 1998cc
- Bore × stroke: NaNmm
- Reference output: 1150NaN0 at 5000 rpm, 18.3kgm at 3600 rpm (gross)
970NaN0 at 4800 rpm, 16.3kgm at 3800 rpm (net)
Applications:
3Y-P
- OHV 8 valve (LPG)
- Displacement: 1998cc
- Bore × stroke: NaNmm
- Output: 790NaN0 at 4,600 rpm, 15kgm at 3,000 rpm
Applications:
- Sep1987 - Aug1989 Crown Sedan (YS130)
- Aug1988 - Dec 1995 Mark II sedan (YX80)
3Y-PU
- OHV 8 valve (LPG, emissions equipment)
- Displacement: 1998cc
- Bore × stroke: NaNmm
- Reference output: 900NaN0 at 5,000 rpm, 16kgm at 3,000 rpm (gross)
790NaN0 at 4,600 rpm, 15kgm 2,000 rpm (net)
Applications:
- Aug 1983 - Aug 1987 Crown (YS120)
- Aug 1986 - ??? Mark II (YX72/YX78V)
3Y-PE
- OHV 8 valve (LPG, fuel injection)
- Displacement: 1998cc
- Bore × stroke: NaNmm
- Compression ratio: 10.5:1
- Reference output: 820NaN0 at 4600 rpm, 16kgm at 2400 rpm (August 1989 until November 1995)
790NaN0 at 4400 rpm, 16.3kgm at 2400 rpm (1995 December)
Applications:
- Aug 1989 - Nov 1999 Crown (YS130)
- Dec 1995 - Aug 2008 Comfort (YXS10)
- Dec 1995 - Aug 2008 Comfort (YXS11)
4Y
- OHV eight-valve
- Displacement: 2237cc
- Bore and stroke: NaNmm
This engine was available either carburetted (4Y) or fuel injected (4Y-E, called the GW491Q/LJ491Q and also 4G22B for Chinese manufacture). As fitted to a 1989 Daihatsu Delta truck, the carburetted 4Y produces 700NaN0 at 4400 rpm (SAE net) and 18.6kgm at 3000 rpm.[2]
- Applications:
Notes and References
- Automobile Guide Book 1983/1984, p. 244
- Delta (brochure), p. 24
