Nissan KA engine

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This article incorporates information from the equivalent article on the Japanese Wikipedia.
Nissan KA engine
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Manufacturer Nissan Motors
Production 1988-2004
Predecessor Nissan Z engine
Configuration I4
Displacement 2.0L
2.4L
Cylinder bore 89 mm (3.5 in)
Piston stroke 96 mm (3.8 in)
Cylinder block alloy Cast iron
Cylinder head alloy Aluminum
Valvetrain SOHC (1988-1996)
DOHC (1991-2004)
Fuel system Fuel injection
Power output 140 hp (100 kW) (1988-1996)
155 hp (116 kW) (1996-2004)
143 hp (107 kW) (1998-2004 Frontier & Xterra)
Torque output 152 lb·ft (206 N·m) @ 4400 rpm (1988-1996)
160 lb·ft (220 N·m) @ 4400 rpm (1996-2004)

The KA engines were a series of inline-4 four-stroke gasoline piston engines manufactured by Nissan, which were offered in 2.0 L and 2.4 L versions. The engines blocks were made of cast-iron, while the cylinder heads were made of aluminum.

Despite their large capacity, this motor was not equipped with balance shafts.

When used in the passenger cars both versions of the KA24 used a crank girdle, as opposed to individual caps. In the Nissan Hardbody and Frontier applications a crank girdle was not used.

Contents

KA24E

The KA24E was a SOHC12-valve engine produced from July 1988 through January 1996. It uses SEFI fuel injection, and features forged steel connecting rods, an internally balanced forged steel crankshaft, and a cast aluminum intake manifold.

Specifications

  • Bore × Stroke: 89.0 × 96.0 mm
  • Max power: 140 hp (105 kW) @ 5600 rpm
  • Max torque: 152 lb·ft (206 Nm) @ 4400 rpm
  • Valve Configuration: SOHC, 12 valves
  • Compression ratio: 8.6:1 (9.1:1 for early 1989 240SX)

Applications

KA24DE

File:KA24DE-1998-Nissan-240SX.jpg
KA24DE Engine in an S14 240SX

The 2.4 L (2389 cc) KA24DE was used in many Nissan cars and trucks. Most KA24DEs bound for the US were built in the Mexican city of Aguascalientes, with the exceptions of the 240SX, 1994-97 Altima (re-badged Bluebird SSS), and the U13 Bluebird released in Australia with FWD configuration which were manufactured in Fukuoka Prefecture, Japan. The Mexican block is the same as the KA24E but has a DOHC head on it and doesn't incorporate the design improvements of the block from Japan. The KA24DE is very similar to the KA24E. The KA24E is SOHC with three valves per cylinder actuated by rocker arms, and the KA24DE is DOHC with four valves per cylinder and shim-over-bucket valve actuation. Design improvements of the block from Japan include the use of a knock sensor, girdled main bearings, different oil pan (not interchangeable between Japanese and Mexican blocks), different oil pickup (front pickup on Japanese block and side on Mexican block), dipstick location (toward the rear of block on Mexican and mid block on Japanese) and piston oil squirters. In addition to the increased power and torque, the KA24DE has a higher redline than the KA24E.Template:Citation needed

Specifications

  • Bore × Stroke: 89.0 × 96.0 mm (3.50 in. x 3.78 in.)
  • Displacement: 2389cc (145cid)
  • Max power: 155 hp (116 kW) @ 5400 rpm (Frontier/Xterra Engines 143 HP @ 4300rpm)
  • Max torque: 160 ft·lb (217 Nm) @ 4400 rpm
  • Valve Configuration: DOHC, 16 valves
  • Compression ratio: 9.5:1(94-98), 9.0:1(91-93) (Frontier/Xterra Engines: 9.3:1)

Applications

Swaps

The KA24DE whether it be N/A, turbocharged, or even supercharged is a popular engine in swaps. This engine is popular with swaps for its toughness, cheapness, availability, and simple design. It has seen the following engine bays and more.


See also

ja:日産・KAエンジン
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