Nissan KA engine

Last updated
Nissan KA engine
Ka24et.jpg
Overview
Manufacturer Nissan (Nissan Machinery)
Production1988–2021
Layout
Configuration Naturally aspirated Inline-4
Displacement
  • 2.0 L (1,998 cc)
  • 2.4 L (2,389 cc)
Cylinder bore
  • 86 mm (3.4 in)
  • 89 mm (3.5 in)
Piston stroke
  • 86 mm (3.4 in)
  • 96 mm (3.78 in)
Cylinder block material Cast iron
Cylinder head material Aluminum
Valvetrain SOHC 2- or 3 valves x cyl. (1988-1997)
DOHC 4 valves x cyl. (1991-2016)
Compression ratio 8.6:1, 9.1:1, 9.2:1, 9.5:1
Combustion
Fuel system Sequential electronic FI
Management Hitachi
Fuel type Gasoline
Cooling system Water-cooled
Output
Power output 134 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) at 4400 rpm (1988-1996)
160 lb⋅ft (217 N⋅m) at 4400 rpm (1996-2004)
Chronology
Predecessor Nissan Z engine
Successor Nissan QR engine

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

Contents

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 crankshaft girdle, as opposed to individual main bearing caps. In the Nissan Hardbody and Frontier applications a crank girdle was not used.

KA20

KA20DE

The KA20DE was a DOHC 16-valve engine produced from June 1999 through August 2007. It was mainly used in Japanese Domestic Market commercial vehicles.

Specifications
Applications

KA24

KA24E

The KA24E was a SOHC 12-valve engine produced from July 1988 through January 1997. It uses Hitachi sequential electronic fuel injection, and features cast steel connecting rods, a half-counterweighted cast steel crankshaft, and a cast aluminum cylinder head.

Specifications
Applications

KA24DE

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

The 2.4 L (2,389 cc)KA24DE was used in many Nissan cars and trucks. Most KA24DEs bound for the US were built in the city of Aguascalientes, Mexico, 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 Yokohama, Kanagawa, Japan. [1] 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 4 valves per cylinder and shim-over-bucket valve actuation. Design improvements of the dual cam engine include the use of a knock sensor, larger diameter girdled main bearings in the Japanese block, 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.[ citation needed ]

KA24DE-A is an Altima specific model of the KA24DE. The head and block are non-interchangeable between all other models and are uniquely cast for front wheel drive operation.

Differences in the Japanese block to Mexican are also present. The Mexico blocks (all DEs except those found in the S series) implemented a distributor and oil pump drive similar to the L series; from the crank nose. They also used a single row chain for the upper timing assembly without valve cover mounted guide. In addition to this, they removed the rearmost cam journal in the Mexico head. The crank rides on individually capped bearings with a slightly smaller diameter than the Japanese block, with shorter, slightly lower compression pistons in cylinders that have thicker walls than the Japanese DE. They retained the knock sensor and piston oilers.

Specifications
Applications

KA24DE

KA24DE-A

See also

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References

  1. "Nissan KA24DE Engine | Turbo, specs, performance upgrades".