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Identify Your Porsche® 928


Model: 928

Manufactured: 10/1977 through 1982
Units Manufactured: 17,669

Powerplant Options:
1977-79 219 HP 16v 4.5L K-Jetronic ( North America )
1977-79 229 HP 16v 4.5L K-Jetronic (Rest of World )
1980-82 220 HP 16v 4.5L L-Jetronic ( North America )
1980-82 229 HP 16v 4.5L K-Jetronic (Rest of World )

 

928 Motorsports LLC® - Identify Your Porsche® 928

Model: 928S and S2

Manufactured 1980 through 1986
Units Manufactured 13,321

Powerplant Options:
1980-83 300 HP 16v 4.7L K-Jetronic (Rest of World )
1983-84 234 HP 16v 4.7L L-Jetronic ( North America )
1984-86 310 HP 16v 4.7L LH-Jetronic (Rest of World )

 

928S3

Model: 928S3

Manufactured 1985 and 1986
Units Manufactured 9,341

Powerplant Options:
1985-86 288 HP 32v 5.0L LH-Jetronic ( North America )

 

928S4

Model: 928S4

Manufactured 1987 to 1991
Units Manufactured 16,213

Powerplant Options:
1987-91 316 HP 32v 5.0L LH-Jetronic (All)

 

928 Motorsports LLC® - Identify Your Porsche® 928

Model: 928GT

Manufactured 1989 to 1991
Units Manufactured 1,620

Powerplant Options:
1989-91 326 HP 32v 5.0L LH-Jetronic (All)

928 Motorsports LLC® - Identify Your Porsche® 928

Model: 928GTS

Manufactured 1992 to 1995
Units Manufactured: 2,831

Powerplant Options:
1992-95 345 HP 32v 5.4L LH-Jetronic (All)

 

 


Identify Your Porsche® 928 Engine

These photos will show you where to find the engine model on a Porsche® 928. There will be two numbers stamped into the block just below the upper radiator hose as shown. The top number is the Engine Serial Number. Below that will be the Engine Model Number, beginning with "M28/xx" The model of the engine is the two digits after "M28/"

The Model number will identify the compression ratio, Horsepower, Torque, and factory fuel system for that motor.

928 Motorsports LLC® - Identify Your Porsche® 928 Engine
Click to Enlarge

928 Motorsports LLC® - Identify Your Porsche® 928 Engine
Click to Enlarge

 


Identify Your 16v Fuel Injection System

There were one of two fuel injection systems installed on the 16v Porsche 928 engines, depending on where the finished automobile was going to be shipped (North America or ROW) and which engine was selected. It is easy to tell them apart.

Open the hood and look at the intake manifold. The K-Jetronic system (or "K-Jet) is a mechanical injection system. You can identify it by the fact that each fuel injector has a hard metal line feeding it and there are no wires to the injectors. See Picture.

The L-Jetronic system (or "L-Jet") is a first-generation electronic fuel injection system. You will see there is a fuel rail that runs across all the injectors (yellow arrows) and the injectors are attached to that rail by short rubber hoses. Also, each injector has some wiring going to it (Green arrows).

928 Motorsports LLC® - Identify Your 16v Fuel Injection System
Click to Enlarge

928 Motorsports LLC® - Identify Your 16v Fuel Injection System
Click to Enlarge

 
   
       

Phone: (920) 485-0928
Email: info@928motorsports.com

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928Motorsports.com - Performance Parts for your Porsche® 928