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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

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 5,000&nbsp;rpm, at 3,200&nbsp;rpm (net)<br>, (gross)

Applications:

2Y-P

  • OHV 8 valve (LPG)
  • Displacement:
  • Bore × stroke:
  • Specifications: 4,600&nbsp;rpm 2,200&nbsp;rpm (net)<br> 5,000&nbsp;rpm 3,000&nbsp;rpm (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 4,800&nbsp;rpm, at 3,400&nbsp;rpm

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 4600&nbsp;rpm, at 3400&nbsp;rpm

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 4,800&nbsp;rpm, at 3,800&nbsp;rpm

Applications:

3Y-EU

  • OHV 8 valve, fuel injection and emissions equipment
  • Displacement:
  • Bore × stroke:
  • Reference output: at 5000&nbsp;rpm, at 3600&nbsp;rpm (gross)<br> at 4800&nbsp;rpm, at 3800&nbsp;rpm (net)

Applications:

3Y-P

  • OHV 8 valve (LPG)
  • Displacement:
  • Bore × stroke:
  • Output: at 4,600&nbsp;rpm, at 3,000&nbsp;rpm

Applications:

  • Sep 1987&ndash;Aug 1989 Crown Sedan (YS130)
  • Aug 1988&ndash;Dec 1995 Mark II sedan (YX80)

3Y-PU

  • OHV 8 valve (LPG, emissions equipment)
  • Displacement:
  • Bore × stroke:
  • Reference output: at 5,000&nbsp;rpm, at 3,000&nbsp;rpm (gross)<br> at 4,600&nbsp;rpm, 2,000&nbsp;rpm (net)

Applications:

3Y-PE

  • OHV 8 valve (LPG, fuel injection)
  • Displacement:
  • Bore × stroke:
  • Compression ratio: 10.5:1
  • Reference output: at 4600&nbsp;rpm, at 2400&nbsp;rpm (August 1989 until November 1995)<br> at 4400&nbsp;rpm, at 2400&nbsp;rpm (1995 December)

Applications:

  • Aug 1989&ndash;Nov 1999 Crown (YS130)
  • Dec 1995&ndash;Aug 2008 Comfort (YXS10)
  • Dec 1995&ndash;Aug 2008 Comfort (YXS11)

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 4400&nbsp;rpm (SAE net) and at 3000&nbsp;rpm.

Applications:

References