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Wikipedia / Toyota Y engine

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 :ja:トヨタ・Y型エンジン

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:

  • Bore × stroke:

  • Reference output: , (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 bore, but stroke is increased to for a displacement of . There are also 2Y-J and 2Y-U engines with differing emissions control equipment.

  • OHV, eight valves

  • Displacement:

  • Bore × stroke:

  • Compression ratio: 8.8:1

  • Reference output (2Y): at 5,000rpm, at 3,200rpm (net), (gross)

Applications:

2Y-P

  • OHV 8 valve (LPG)

  • Displacement:

  • Bore × stroke:

  • Specifications: 4,600rpm 2,200rpm (net) 5,000rpm 3,000rpm (gross)

  • LPG

Applications:

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:

  • Bore × stroke:

  • Compression ratio: 8.8:1

  • Reference output: at 4,800rpm, at 3,400rpm

Applications:

3Y-C

This is the low emissions carburetted motor with catalytic converter exhaust system.

  • OHV 8 valve

  • Displacement:

  • Inside Bore × Stroke:

  • Compression ratio: 8.8:1

  • Reference output: at 4600rpm, at 3400rpm

Applications:

  • LiteAce XTRA TRACK Wagon (YM40-RGMDSQ), (YM41-RVMDSQ)

  • Toyota Townace Van (YR39)

3Y-E

  • OHV 8 valve, fuel injection

  • Displacement:

  • Bore × stroke:

  • Compression ratio: 8.8:1

  • Reference output: at 4,800rpm, at 3,800rpm

Applications:

3Y-EU

  • OHV 8 valve, fuel injection and emissions equipment

  • Displacement:

  • Bore × stroke:

  • Reference output: at 5000rpm, at 3600rpm (gross) at 4800rpm, at 3800rpm (net)

Applications:

3Y-P

  • OHV 8 valve (LPG)

  • Displacement:

  • Bore × stroke:

  • Output: at 4,600rpm, at 3,000rpm

Applications:

  • Sep 1987Aug 1989 Crown Sedan (YS130)

  • Aug 1988Dec 1995 Mark II sedan (YX80)

3Y-PU

  • OHV 8 valve (LPG, emissions equipment)

  • Displacement:

  • Bore × stroke:

  • Reference output: at 5,000rpm, at 3,000rpm (gross) at 4,600rpm, 2,000rpm (net)

Applications:

3Y-PE

  • OHV 8 valve (LPG, fuel injection)

  • Displacement:

  • Bore × stroke:

  • Compression ratio: 10.5:1

  • Reference output: at 4600rpm, at 2400rpm (August 1989 until November 1995) at 4400rpm, at 2400rpm (1995 December)

Applications:

4Y

  • OHV eight-valve

  • Displacement:

  • Bore and stroke:

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 at 4400rpm (SAE net) and at 3000rpm.

  1. Applications:

  2. 1987.09 - 1995.12 Toyota Crown (YS132, overseas specifications)

  3. Toyota Van (Town Ace overseas specification, Tarago in Australia)

  4. Hiace third generation (overseas specification)

  5. 1979-1988 Toyota Stout (YK110)

  6. Daihatsu Delta

  7. 1993-1995 Daihatsu Rocky F95

  8. Toyota Industries forklifts

  9. Toyota 4Runner (Australia)

  10. Volkswagen Taro

  11. 1985–1997 Toyota Hilux fourth and fifth generation

References