Mitsubishi 4g32b engine

Types of Mitsubishi 4G32B Engine

• 4G32B-15

  The Mitsubishi 4G32B-15 engine is the base and most commonly used variant of the 4G32B engine family. It has a displacement of 1.6L (1597cc) and produces up to 95hp (70kW) and 130Nm (96lb-ft) of torque. The engine has a cast iron block and aluminum alloy cylinder head. The bore and stroke measurements are 81mm x 83mm. The compression ratio is 9.5:1. The 4G32B-15 also has a timing chain and belt. The fuel system uses a carburetor or fuel injection, depending on the variant. The ignition system is either a distributor or electronic ignition. The lubrication system is a wet sump. The cooling system is liquid-based. The 4G32B-15 engine features a simple pushrod-operated OHV (overhead valve) valvetrain for its 8 valves. The valvetrain is configured with 2 valves per cylinder, with the valves actuated directly by the pushrods using rocker arms.

• 4G32B-14

  The 4G32B-14 engine is a more powerful version of the 4G32B engine. It has the same displacement as the 4G32B-15 engine, but the power output increases to 105hp (78kW) and 135Nm (99lb-ft) of torque.

• 4G32B-16

  The 4G32B-16 engine has the same specifications as the 4G32B-15 and 4G32B-14 engines, but the power output is increased to 110hp (82kW) and 145Nm (107lb-ft) of torque.

• 4G32B-17

  The Mitsubishi 4G32B-17 engine is a less commonly used variant of the 4G32B engine family. It has a displacement of 1.8L (1797cc). The power output of the 4G32B-17 engine is up to 115hp (86kW) and 155Nm (114lb-ft) of torque.

Specifications and maintenance of Mitsubishi 4g32b engines

The Mitsubishi 4g32b engine is a part of the Mitsubishi 4G engine family. It is a 4-cylinder, in-line, 4-stroke, water-cooled gasoline engine with a cast-iron cylinder block and cast-aluminum cylinder head. The engine has a SOHC (Single Overhead Camshaft) configuration with 8 valves (2 valves per cylinder). It uses a carburetor fuel system and has a compression ratio of 8.8:1. The bore and stroke measurements are both 75 mm (2.95 in). The engine has a piston displacement of 1.6 liters (1,592 cc or 97.2 cu in) and a maximum power output of 80-82 PS (59-60 kW or 79-81 hp) at 5,800 rpm and a maximum torque of 120-125 N·m (89-92 lbf·ft) at 3,500 rpm. The 4G32B engine has a dry sump oil system and a cooling system with a water pump. The fuel tank capacity is 37 liters (9.8 U.S. gal; 8.2 imp gal), and the lubrication system works with engine oil. The ignition system of the 4G32B engine is electrical, and the starter is a 12-volt battery.

Every engine, including the Mitsubishi 4G32B engine, requires maintenance to achieve optimal performance and longevity. Below are some of the maintenance tips for the Mitsubishi 4G32B engine:

• Engine oil: Users should change the engine oil and oil filter at the recommended intervals. This helps to reduce friction and keep the engine parts lubricated. Also, ensure the oil level is at the required mark and use the recommended oil grade.
• Air filter: Changing the air filter at the recommended intervals helps to maintain clean airflow to the engine and improves fuel efficiency. While inspecting the air filter, users should clean it if necessary.
• Fuel system: Inspecting and cleaning the fuel system components such as fuel injectors and the fuel filter ensures optimum performance. Also, using good quality fuel improves engine performance.
• Cooling system: Maintaining the cooling system by regularly checking coolant levels, hoses, and the engine's water pump helps to prevent overheating and damage to the engine. The coolant also helps to transfer heat away from the engine to keep it at an optimal temperature.
• Spark plugs and ignition system: Checking the spark plugs and the ignition system components helps to maintain a reliable ignition. Users should replace worn plugs at the due time.

How to Choose Mitsubishi 4G32B Engines

Choosing the proper Mitsubishi 4G32B engine for a specific use case involves weighing numerous factors to ensure compatibility, performance, and reliability. Here are some key considerations:

• Performance needs: Consider the performance requirements for the intended use when selecting the 4G32B engine. The required engine output, such as horsepower and torque, should be considered if the car needs frequent fast acceleration, like in city traffic, or if it requires pulling heavy loads.
• Fuel Efficiency: For long-distance travel, an engine that provides good fuel efficiency is crucial. Weighing the trade-off between engine size and fuel efficiency is essential if frequent long-distance traveling involves carrying many passengers or cargo.
• Maintenance and Durability: Select an engine with a proven track record of durability and low maintenance requirements for off-road and rural applications with limited access to service facilities. Consider the engine's complexity and whether specialized tools or knowledge are needed for maintenance and repairs.
• Environmental Regulations: Ensure that the chosen 4G32B engine complies with local emissions regulations, especially for on-road use in urban areas where emissions standards may be strict. Examine the engine's emissions control mechanisms, such as catalytic converters and particulate filters.
• Climate and Operating Conditions: Consider the engine's suitability for the climate and the operating environment. Choose an engine designed for extreme temperatures if one works in places with extreme heat or cold. If one operates in high altitudes, consider an engine with adequate power adjustment.
• Vehicle Compatibility: Ensure that the chosen 4G32B engine will fit in the car and that all essential systems—like cooling, exhaust, and electrical—will cooperate with it. Examine the transmission options available for the selected engine and ensure they fulfill the desired performance and driving experience requirements.
• Future Needs: Consider possible future needs, such as increased power for towing or carrying more cargo. Select an engine that can be adapted or upgraded to meet future requirements.
• Cost: While not immediately apparent, the engine's long-term cost is also essential. This includes the engine's initial purchase price, fuel costs, maintenance expenditures, and potential repair costs. Sometimes, a more expensive engine may be more economical in the long term due to its better fuel efficiency or lower maintenance needs.

How to DIY and Replace Mitsubishi 4G32B Engine

Replacing a Mitsubishi 4G32B engine can be a complicated task that generally requires professional expertise. However, with the right tools and basic mechanical knowledge, the engine can be replaced as a DIY project. Follow these steps to replace the Mitsubishi 4g32b engine:

• Prepare: Gather all the necessary tools for engine replacement. This includes wrenches, sockets, pliers, screwdrivers, an engine hoist, and safety gear. Make sure to disconnect the battery before starting the process.
• Drain fluids: Drain all fluids from the engine, including oil, coolant, and fuel. Dispose of these fluids according to local regulations.
• Remove accessories: Start removing accessories connected to the engine, such as the air intake system, exhaust manifold, fuel rail, ignition components, and electrical connectors. Keep track of the removed parts for easy reinstallation.
• Disconnect the transmission: Disconnect the engine from the transmission by removing the bolts that hold them together. Depending on the vehicle, this may require accessing the transmission from underneath.
• Engine mounts: Locate and remove the engine mount bolts that attach the engine to the vehicle's chassis. The engine is usually held in place by three or four mounts.
• Use an engine hoist: Attach an engine hoist to the engine using appropriate lifting points. Carefully lift the engine out of the engine bay, ensuring no connected components are still attached to the engine.
• Install the new engine: Position the new Mitsubishi 4G32B engine onto the engine mounts within the engine bay. Lower the engine using the hoist and ensure proper alignment with the mounts and transmission.
• Reconnect components: Reconnect all components and systems disconnected during the disassembly process. This includes engine mounts, transmission, electrical connectors, fuel lines, coolant hoses, and exhaust components.
• Refill fluids: Refill the engine with the appropriate type and amount of engine oil. Refill the cooling system with the recommended coolant. Ensure there are no leaks in the fuel system or any other connected systems.
• Start the engine: Double-check all connections and components before starting the engine. Once satisfied, start the engine and let it run for a few minutes. Monitor the engine for any unusual sounds, vibrations, or warning lights on the dashboard.

Q and A

Q1: What vehicles use the Mitsubishi 4G32B engine?

A1: The Mitsubishi 4G32B engine was used in various Mitsubishi vehicles, particularly in the 1970s and 1980s. This includes models like the Mitsubishi Lancer and Mitsubishi Galant. However, exact usage can vary by region and specific vehicle model.

Q2: Is the Mitsubishi 4G32B engine still in production?

A2: No, the Mitsubishi 4G32B engine is not in production anymore. Mitsubishi has since moved on to more modern engine technologies that meet current emissions and efficiency standards.

Q3: Can the Mitsubishi 4G32B engine be retrofitted into other vehicles?

A3: In theory, it is possible to retrofit the Mitsubishi 4G32B engine into other vehicles, but this would require significant modifications to the engine mounts, wiring harness, exhaust system, and other components. It's generally not recommended due to the complexities involved.

Q4: Where can I get parts for the Mitsubishi 4G32B engine?

A4: While the 4G32B engine is outdated, some spare parts might still be available from Mitsubishi dealerships or specialized vintage car parts suppliers. Additionally, online platforms like Chovm.com can be used to source parts from suppliers.

Q5: What are common problems associated with the Mitsubishi 4G32B engine?

A5: As with any engine, wear and tear is a common issue. Problems include decreased performance, increased emissions, and potential mechanical failures like piston ring wear or valve seat wear. Regular maintenance can help mitigate these issues.