KA24DE
| Nissan KA engine | |
|---|---|
 |
|
| Overview | |
| Manufacturer | Nissan (Nissan Machinery) |
| Production | 1988-2004 |
| Combustion chamber | |
| Configuration | I4 |
| Displacement | 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 (1988-1997) DOHC (1991-2004) |
| Combustion | |
| Fuel system | Fuel injection |
| 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 (220 N·m) at 4400 rpm (1996-2004) |
| Chronology | |
| 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.
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.
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Wikipedia