Low Mileage Imported New & Used Mitsubishi Sirius 2.0L 4G63 Engine for sale at affordable prices. request a quote Today!
The 2.0L 4G63 engine is a member of the Mitsubishi Sirius 4G6 family firstly introduced in 1980. It is the four-cylinder 2.0-liter gasoline naturally aspirated engine (the turbocharged version is the 4G63T engine).
The 4G63 is a heavily modified the G63B engine (a SOHC carbureted eight-valve version installed in different Mitsubishi models until 1986-88). This engine has a long history and it has been used in a wide range of applications (in Mitsubishi, Plymouth, Dodge, Eagle and Hyundai vehicles). There were many versions with new upgrades and different parts during the production.
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The 4G63 was a 1,997 cc (2.0 L) version.
Bore x stroke is 85 mm × 88 mm (3.35 in × 3.46 in) SOHC and DOHC were produced. Both versions were available in either naturally aspirated and turbocharged form. For front-wheel drive applications, the turbocharged Sirius’ name was changed to “Cyclone Dash”. As fitted to the fifth generation Galant 200 PS (147 kW; 197 bhp) JIS gross were claimed – the output claims later shrank to 170 PS (125 kW; 168 bhp) – for the turbocharged and intercooled “Sirius Dash 3×2 valve” engine.
This version could switch between breathing through two or three valves per cylinder, to combine high top-end power with low-end drivability as well as allowing for economical operation.[1] It was a modification of Mitsubishi MCA-Jet technology which used a secondary intake valve to inject air into the engine for more efficient emissions control. The DOHC version was introduced in 1987 in the Japanese market Galant, and came in turbocharged or naturally aspirated form. It is found in various models including the 1988-92 Mitsubishi Galant VR-4, the U.S. market 1990-1999 Mitsubishi Eclipse, and the Mitsubishi Lancer Evolution I-IX. Later versions also received Mitsubishi’s variable valve timing system, MIVEC.
The 4G63 engine always has a cast iron cylinder block. The engine block is equipped with two balance shafts (silent shafts). It also had forged steel crankshaft and connecting rods and cast aluminum alloy pistons (some engines had aluminum pistons with steel inserts). Depends on modification, the engine has several types of aluminum cylinder heads: 8-valve SOHC head, 16-valve SOHC head, and 16-valve DOHC head. All versions use the timing belt to drive the intake and exhaust camshafts or just single camshaft. The single cam actuates the intake and exhaust valves via rocker arms and the adjustment of the valve clearances is required. The cylinder heads with double overhead camshafts offered since 1987.
These engines also have rocker arms but with automatic hydraulic valve clearance compensation. The intake valve diameter is 33 mm; the exhaust valve diameter is 29 mm. The all 4G63 engines were equipped with Mitsubishi’s electronically controlled multi-point fuel injection system named as ECI-MULTI. The DOHC engines also got the electronic ignition.
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