An Isuzu 4FB1 Turbo refers to the 1.8-liter or 2.8-liter Isuzu 4FB1 diesel engine, which was designed with the capability of being turbocharged to boost power and torque, as seen in specific models like the 1981-1986 Chevrolet Chevette and some Fiat Spiders. While some 4FB1 engines were naturally aspirated, turbo versions were factory-equipped or retrofitted by enthusiasts to significantly increase horsepower and fuel efficiency.
Power & Performance
A 1.8L 4FB1 diesel engine was an option in this model, with both naturally aspirated and turbocharged variants available.
The turbocharged Isuzu 4FB1 (designated 4FB1T) is a 1.8L (1817cc) inline-4 cylinder, SOHC diesel engine that produces approximately 73 horsepower and 116 ft-lbs of torque, found in vehicles like the first-generation Isuzu Gemini. Key features include a high compression ratio, belt-driven camshaft and fuel pump, an oil jet pipe for piston cooling, and an external oil cooler to handle the added heat from the turbocharger.
Key Specifications
Utilizes exhaust gases to spin a turbine, forcing more air into the engine for increased power.
A design feature of the 4FB1 family that eliminates the need for spark plugs in diesel operation.
An oil jet pipe sprays pressurized oil onto the underside of the pistons, and an external oil cooler helps manage the higher temperatures associated with a turbocharged engine.
The camshaft and fuel injection pump are driven by a belt, contributing to the engine’s efficiency.
There are no reviews yet.