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Toyota Y engine

Summary

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.

Y engine
Overview
ManufacturerToyota
Production1982–1996
Layout
ConfigurationNaturally aspirated straight-four
ValvetrainOHV 2 valves per cylinder
Combustion
Fuel systemCarburettor
Multi-port fuel injection
Fuel typePetrol
Oil systemWet sump
Cooling systemWater-cooled
Output
Power output70–95 PS (69–94 hp; 51–70 kW) (net)
Torque output135–182 N⋅m (14–19 kg⋅m; 100–134 lb⋅ft) (net)
Chronology
SuccessorToyota TZ engine

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 edit

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: 1.6 L (1,626 cc)
  • Bore × stroke: 86 mm × 70 mm (3.39 in × 2.76 in)
  • Reference output: 84 PS (62 kW), 13.8 kg⋅m (135 N⋅m; 100 lbf⋅ft) (gross figures, apply to both 1Y and 1Y-J)

Applications:

2Y edit

The 2Y engine is an OHV, eight valve construction just like the 1Y. It shares that engine's 86 mm (3.39 in) bore, but stroke is increased to 78 mm (3.07 in) for a displacement of 1.8 litres (1,812 cc). There are also 2Y-J and 2Y-U engines with differing emissions control equipment.

  • OHV, eight valves
  • Displacement: 1.8 L (1,812 cc)
  • Bore × stroke: 86 mm × 78 mm (3.39 in × 3.07 in)
  • Compression ratio: 8.8:1
  • Reference output (2Y): 79 PS (58 kW) at 5,000 rpm, 14.3 kg⋅m (140 N⋅m; 103 lbf⋅ft) at 3,200 rpm (net)
     95 PS (70 kW), 15.5 kg⋅m (152 N⋅m; 112 lbf⋅ft) (gross)

Applications:

2Y-P edit

  • OHV 8 valve (LPG)
  • Displacement: 1.8 L (1,812 cc)
  • Bore × stroke: 86 mm × 78 mm (3.39 in × 3.07 in)
  • Specifications: 70 PS (51 kW) 4,600 rpm 13.5 kg⋅m (132 N⋅m; 98 lbf⋅ft) 2,200 rpm (net)
      85 PS (63 kW) 5,000 rpm 14.5 kg⋅m (142 N⋅m; 105 lbf⋅ft) 3,000 rpm (gross)
  • LPG

Applications:

3Y edit

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: 2.0 L (1,998 cc)
  • Bore × stroke: 86 mm × 86 mm (3.39 in × 3.39 in)
  • Compression ratio: 8.8:1
  • Reference output: 88 PS (65 kW) at 4,800 rpm, 15.8 kg⋅m (155 N⋅m; 114 lbf⋅ft) at 3,400 rpm

Applications:

3Y-C edit

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

  • OHV 8 valve
  • Displacement: 2.0 L (1,998 cc)
  • Inside Bore × Stroke: 86 mm × 86 mm (3.39 in × 3.39 in)
  • Compression ratio: 8.8:1
  • Reference output: 85 PS (63 kW) at 4600 rpm, 15.8 kg⋅m (155 N⋅m; 114 lbf⋅ft) at 3400 rpm

Applications:

  • LiteAce XTRA TRACK Wagon (YM40-RGMDSQ), (YM41-RVMDSQ)
  • Toyota Townace Van (YR39)

3Y-E edit

  • OHV 8 valve, fuel injection
  • Displacement: 2.0 L (1,998 cc)
  • Bore × stroke: 86 mm × 86 mm (3.39 in × 3.39 in)
  • Compression ratio: 8.8:1
  • Reference output: 97 PS (71 kW) at 4,800 rpm, 16.3 kg⋅m (160 N⋅m; 118 lbf⋅ft) at 3,800 rpm

Applications:

3Y-EU edit

  • OHV 8 valve, fuel injection and emissions equipment
  • Displacement: 2.0 L (1,998 cc)
  • Bore × stroke: 86 mm × 86 mm (3.39 in × 3.39 in)
  • Reference output: 115 PS (85 kW) at 5000 rpm, 18.3 kg⋅m (179 N⋅m; 132 lbf⋅ft) at 3600 rpm (gross)
     97 PS (71 kW) at 4800 rpm, 16.3 kg⋅m (160 N⋅m; 118 lbf⋅ft) at 3800 rpm (net)

Applications:

3Y-P edit

  • OHV 8 valve (LPG)
  • Displacement: 2.0 L (1,998 cc)
  • Bore × stroke: 86 mm × 86 mm (3.39 in × 3.39 in)
  • Output: 79 PS (58 kW) at 4,600 rpm, 15 kg⋅m (150 N⋅m; 110 lbf⋅ft) at 3,000 rpm

Applications:

  • Sep1987–Aug1989 Crown Sedan (YS130)
  • Aug1988–Dec 1995 Mark II sedan (YX80)

3Y-PU edit

  • OHV 8 valve (LPG, emissions equipment)
  • Displacement: 2.0 L (1,998 cc)
  • Bore × stroke: 86 mm × 86 mm (3.39 in × 3.39 in)
  • Reference output: 90 PS (66 kW) at 5,000 rpm, 16 kg⋅m (160 N⋅m; 120 lbf⋅ft) at 3,000 rpm (gross)
     79 PS (58 kW) at 4,600 rpm, 15 kg⋅m (150 N⋅m; 110 lbf⋅ft) 2,000 rpm (net)

Applications:

3Y-PE edit

  • OHV 8 valve (LPG, fuel injection)
  • Displacement: 2.0 L (1,998 cc)
  • Bore × stroke: 86 mm × 86 mm (3.39 in × 3.39 in)
  • Compression ratio: 10.5:1
  • Reference output: 82 PS (60 kW) at 4600 rpm, 16 kg⋅m (160 N⋅m; 120 lbf⋅ft) at 2400 rpm (August 1989 until November 1995)
     79 PS (58 kW) at 4400 rpm, 16.3 kg⋅m (160 N⋅m; 118 lbf⋅ft) 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 edit

  • OHV eight-valve
  • Displacement: 2.2 L (2,237 cc)
  • Bore and stroke: 91 mm × 86 mm (3.58 in × 3.39 in)

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 70 kW (95 PS; 94 hp) at 4400 rpm (SAE net)[5] and 18.6 kg⋅m (182 N⋅m; 135 lbf⋅ft) at 3000 rpm.[6]

Applications

References edit

  1. ^ All Trucks & Vans (catalog) (in Japanese), Japan: Toyota, August 1985, p. 18, 021011-6008
  2. ^ Rex, Rainer, ed. (July 1989), Lastauto Omnibus Katalog 1990 [Truck and bus catalog] (in German), vol. 19, Motor-Presse-Verlag GmbH und Co. KG, p. 151, 81531/89001
  3. ^ 自動車ガイドブック [Japanese Motor Vehicles Guide Book 1983/1984] (in Japanese), vol. 30, Japan: Japan Automobile Manufacturers Association, 1983-10-28, p. 238, 0053-830030-300
  4. ^ Automobile Guide Book 1983/1984, p. 244
  5. ^ Delta (brochure), Osaka, Japan: Daihatsu Motors, p. 8, 1 098-00191
  6. ^ Delta (brochure), p. 24

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