Will the engine of an Mistubishi Eclipse 1996 fit in the body of a Mitsubishi eclipse 1999?
The second generation of the Mitsubishi Eclipse was produced from 1995 to 1999. So the short answer is YES. There are some variables to consider. Make sure the engine replacement engine is the same so that the electronic controls will work properly.
1995 -1996 Mitsubishi Eclipse Trim Levels
The Eclipse was available in seven trim levels: Base [Only available in 1996.5 (mid-model year)], RS (Rally Sport), GS (Grand Sport), GS Spyder, GS-T (Grand Sport Turbo), GS-T Spyder, and GSX (Grand Sport X=AWD).
- Eclipse RS: Base model equipped with a 140 hp (104 kW) and 130 lb⋅ft (176 N⋅m) of torque 2.0 L 16-valve DOHC Chrysler 420a engine
- Eclipse GS: Equipment upgraded model equipped with a 140 hp (104 kW) and 130 lb⋅ft (176 N⋅m) of torque 2.0 L 16-valve DOHC Chrysler 420A engine. The European variant of the GS had a naturally aspirated, DOHC 16 valve 4G63 engine producing 150 HP
- Eclipse Spyder GS: Convertible model equipped with a 141 hp (105 kW) 2.4 L 16-valve SOHC Mitsubishi 4G64 engine
- Eclipse GS-T: Upgraded model equipped with a 210 hp (157 kW) and 214 lb⋅ft (290 N⋅m) of torque turbocharged and intercooled 2.0 L 16-valve DOHC Mitsubishi 4G63 engine
- Eclipse Spyder GS-T: Convertible model equipped with a 210 hp (157 kW) and 214 lb⋅ft (290 N⋅m) of torque turbocharged and intercooled 2.0 L 16-valve DOHC Mitsubishi 4G63 engine
- Eclipse GSX: AWD model equipped with a 210 hp (157 kW) and 214 lb⋅ft (290 N⋅m) of torque turbocharged and intercooled 2.0 L 16-valve DOHC Mitsubishi 4G63 engine
1995 -1996 Mitsubishi Eclipse Engines
All motors are four-cylinder gasoline engines. All have cast iron blocks with aluminum cylinder heads. The 4G63/4G64 engines retain the balance shafts for smoother operation, while the 420a does not use them. The 1995–1999 turbo engines were given an increased compression ratio of 8.5:1, up from 7.8:1, and a smaller turbo, a Garrett T25 set to 12psi in place of the previous Mitsubishi TD04-13G (automatic cars) and TD05-14B (manual cars). This was done to minimize turbo lag, which was an undesirable trait for mass-market appeal in the U.S. These changes led to increased horsepower and torque vs. the previous 1G turbos. The 2G turbo cars produced 210 hp (157 kW) at 6000 rpm (205 hp (153 kW) at 6000 rpm w/ AT) and 214 lb⋅ft (290 N⋅m) at 3000 rpm (220 lb⋅ft (298 N⋅m) at 3000 rpm w/ AT.)
The 4G63 engines found in 1990–1994 models have a 60 mm throttle body compared to the 1995–1999 MY’s 52 mm. The intake ports on the head and runners of the intake manifold are also larger on the 1G. They also have larger crankshaft bearing journals to allow better lubrication. Because they look similar, it is important to note that the 1990-1994 cylinder head is more on the side of high air volume, while the 1995-1999 cylinder head is more on the side of high air velocity.
Mitsubishi Motors quietly updated its 4G63 engine in 1998 and 1999. The crankshaft is more precisely shaved and cut compared to previous years. It is identical to that used in the Mitsubishi Lancer Evolution, which was not yet sold in North America until 2003. The thrust bearings have been revised to a “split” type to allow better lubrication and self-alignment with the crankshaft. It also had improved tuning & functionality, thanks to a new ECU, which was similar to Lancer Evolution ECUs. Although originally deactivated to protect the drivetrain, it included advanced features such as launch control, boost control, adjustable rev-limit, fuel system control and even fuel and boost map selection for certain Mitsubishi Heavy Industries turbochargers.