Nissan KA engine
|Nissan KA engine|
|Cylinder bore||89 mm (3.5 in)|
|Piston stroke||96 mm (3.8 in)|
|Cylinder block alloy||Cast iron|
|Cylinder head alloy||Aluminum|
|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) at 4400 rpm (1988-1996)
160 lb·ft (220 N·m) at 4400 rpm (1996-2004)
|Predecessor||Nissan Z engine|
|Successor||Nissan QR engine|
The KA engines were a series of inline-4 four-stroke gasoline piston engines manufactured by Nissan, which were offered in 2.4 L. 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 crankshaft girdle, as opposed to individual main bearing caps. In the Nissan Hardbody and Frontier applications a crank girdle was not used.
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 forged steel crankshaft, and a cast aluminum cylinder head.
- Bore × Stroke: 89.0 × 96.0 mm
- Max power: 140 hp (105 kW) at 5600 rpm (Navara/Hardbody(D21) 134 hp at 5200 rpm)
- Max torque: 152 lb·ft (206 Nm) at 4400 rpm (Navara/Hardbody(D21) 154 lb·ft at 3600 rpm)
- Valve Configuration: SOHC, 12 valves
- Compression ratio: 8.6:1 (9.1:1 for early 1989 240SX)
- Timing Chain (not Timing Belt a.k.a. Cambelt)
- 1989–1990 Nissan 240SX
- 1990–1997 Nissan Hardbody Truck
- 1997-1999 D22 Navara (Australia)
- 1990-1995 Nissan Pathfinder
- 1989–1995 Nissan Axxess / Nissan Prairie (not UK except parallel imports for wheelchair conversions post 1991)
- 1990–1992 Nissan Stanza (USA-spec)
- 1989–1992 Nissan Pintara / Ford Corsair
- 1993-1996 Nissan Terrano II Europe
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 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 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.
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.
- Bore × Stroke: 89.0 × 96.0 mm (3.50 in. x 3.78 in.)
- Displacement: 2389 cc (145cid)
- Max power: 155 hp (116 kW) at 5400 rpm (Navara/Frontier (D22) 110 kW at 5600 rpm) (Xterra engine: 143 hp at 4300 rpm)
- Max torque: 160 ft·lb (217 Nm) at 4400 rpm (Navara/Frontier (D22) 208 N·m at 3600 rpm)
- Valve Configuration: DOHC, 16 valves
- Compression ratio: 9.5:1(240sx 91-98), 9.2:1(Navara/Frontier (D22)), 9.2:1(Xterra Engines)
- Timing Chain
- 2000-2004 Nissan Xterra
- 1998-2008 Nissan Navara/Frontier (D22)
- 1991-1998 Nissan 240SX
- 1997-2000 Nissan R'nessa (4WD model, Japan)
- 1998-2001 Nissan Presage U30 (Japan)
- 1999-2001 Nissan Bassara U30 (Japan)
- 1993-1997 Nissan Bluebird U13
- Isuzu COMO (Japanese: Isuzu COMO)
- Nissan Largo
- KA24de-a 1993-2001 Nissan Altima [1993-1999 150 hp (112 kW) - Max torque 154 ft.lb. - Change Hp&Torque in 2000-01]
The KA24DE is a popular engine for swaps and boosted applications, due to its strength, availability, and simplicity of design. It has been swapped into a number of vehicles, mainly other Nissan/Datsun products.