Nissan KA engine: Wikis


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KA24E Engine

The KA engines are cast iron blocks topped with aluminum heads. When used in the passenger cars both used a crank girdle as opposed to individual caps. In the Hardbody and Frontier applications a crank girdle was not used.



The KA24E was a SOHC 12-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.


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



KA24DE Engine in a 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 and 1994-97 Altima (rebadged Bluebird SSS), which were manufactured in Fukuoka Prefecture, Japan, and the U13 Bluebird released in Australia with FWD configuration. The KA24DE is very similar to the KA24E. The cylinder head is the only major change, the KA24E having one overhead cam and three valves per cylinder, and the KA24DE having a DOHC, 16-valve design, with shim-over-bucket valve actuation. Other design improvements include the use of a knock sensor and piston oil squirters. In addition to the increased power and torque, the KA24DE has a slightly wider power band than the KA24E. These engines have also been proven to be quite tough. The KA24DE-turbo is a popular alternative to the SR20DET swap in 240SXs and many enthusiasts make 250-300hp without modifying the stock engine internals. This engine has pushed into the 7 seconds in the 1/4 mile in some drag racing chassis. With their large stroke these engines are known for being low-revving "torque monsters," their torque band being biased towards the low RPM range.


  • Bore × Stroke: 89.0 × 96.0 mm (3.50 in. x 3.78 in.)
  • Displacement: 2389cc (145cid)
  • Max power: 155 hp (116 kW) @ 5600 rpm (Frontier 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 Engines: 9.3:1)


Turbocharged KA24E/DE

Aftermarket turbocharger kits are available for the KA24DE. After the engine is turbocharged, it is generally referred to as a KA24DET (or KA24ET for SOHC versions). The KA24DET was, however, never produced by Nissan as a factory option. The "T" at the end of the engine code indicates that the engine is turbocharged, using standard Nissan engine designation practice. More information on this subject can be found at


The KA24DER is not a Nissan production engine. It is a KA24DE with a supercharger on it. Kits may be available but not likely. This modification is normally all custom made in house. The most typical supercharger used is a roots style eaton m62 from a nismo xterra/frontier and m90's on occasion. Again more information is available in the supercharged KA24DE section.


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

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