What kind of engine does a Porsche 928 have?
The belt on the 928 is reputedly the longest toothed belt ever used on a production auto. It drives either two or four overhead camshafts, the oil pump and the water pump, and several other pieces of mechanism. We are not noted for taking it easy on our engines, so it gets to see rapid acceleration, lots of gearshifts, and high RPM operation.
When to change timing belt on Porsche 928?
The 928 has a timing belt that should be changed along with the water Pump every 50K miles. The 16 valve engines pre -1985 are non interference engines and will not damage the engine if the belt breaks. I have never seen one really break, but the teeth do get chewed up causing the belt to slip accomplishing the same end result.
Is the belt tensioner in a Porsche 928 self tensioning?
The belts are NOT self tensioning. There is a belt tensioner in the belt system, but it only accounts for a small amount of stretching. If never serviced, the belt will eventually fail (lose teeth or part). In either case, the result can be from “just disabled” to “needing new valves”.
Is the Porsche 944 a world class car?
The 944 is a very reliable and fun car to drive, but it is not in the class of a 928. The 928 is a world class car that still ranks very close to one the best production performance cars ever. For power and handling there are very few competitors.
What should I do about my Porsche 928 brake system?
The Porsche 928 has been known to lack enough braking power. You can strengthen your braking system by replacing the calipers and pads with performance ones, replacing the rotors, or replacing the fuel lines. You can also purchase a full brake kit that comes with nothing but performance parts.
How big are the brakes on a 928?
But no more. 928 Motorsports LLC® in collaboration with Brembo has developed a new brake kit for the 928, dubbed the “GT1” big brake kit. Not to be confused with others’ “big brake” kits sporting 304 or 322mm rotors, these GT1 brakes are a whopping 355mm rotor with a lightweight two-piece rotor and hat combination.
What are the parts numbers for a Porsche 928?
Porsche Classic is also adding part numbers on a regular basis for your older Porsche—and we can get them all for you. T33-038-580 Helios-Preisser Dial Indicator.
Which is better Porsche 928 rotors or calipers?
The rotors are light-weight and “floating,” offering better braking. Due to the reduced “unsprung” weight, they double up in performance for Porsche 928s. Skill Level – Moderate; Easier than removing rotors and calipers, but will require proper bleeding of brake system.
Why does the temperature gauge on my car read high?
Reasons the Temperature Gauge Reads High If the temperature gauge reads high, it could mean your engine is overheating. Another reason your reading might be high is you could be losing coolant. A small leak or evaporation may cause your radiator to slowly lose coolant.
What was the problem with the Porsche 928 dash?
quicker. The most common problem in these early 928 circuits, was the indicator light burning out. Somewhere between 1984 and 1986 Porsche superceeded the indicator light bulb to P/N 928 641 958 00. The glass portion of the bulb is physically bigger than the previous bulb. The plastic
How to test the engine temperature sensor Porsche 928?
Connect terminals 17 and 21 of the disconnected LH control unit plug. It must be possible to measure the battery voltage between terminal 2 (positive) and terminal 4 (ground) of the disconnected air-flow sensor plug. Was this article helpful?
How to check battery voltage in Porsche 928?
Checking the voltage supply to the air-flow sensor: Connect terminals 17 and 21 of the disconnected LH control unit plug. It must be possible to measure the battery voltage between terminal 2 (positive) and terminal 4 (ground) of the disconnected air-flow sensor plug.
What does the TPS do on a Porsche 928?
The 928 utilizes a throttle position switch (TPS) to make fueling and ignition timing adjustment based on throttle input. The TPS has a setting for idle and a setting for wide-open throttle which is only activated at about 3/4 throttle input. The TPS is a very common failure on 928’s and can cause various poor running conditions.
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 ) Model: 928S and S2
How to identify a Porsche 928 fuel injection system?
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.
Where do you find the model number on a Porsche 928?
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. The Model number will identify the compression ratio, Horsepower, Torque, and factory fuel system for that motor.
Where is the start valve on a Porsche K-Jetronic rennlist?
COMPONENT LOCATION Mixture Control Unit(1), Injectors (2) . The Start Valve is located on back of intake manifold below the venturi assembly. The Thermo-time Switch is located on engine block below the secondary air pump. Warm-up Regulator (1) Electric Fuel Pump K-Jetronic Fuel Pump Test Point (arrow) Secondary Air Pump Pressure Hose (arrow)
Is it possible to repair a Porsche 928 international?
928 International 928 International is a team dedicated to providing you with the information needed to repair and maintain your Porsche 928. *Some of these files must be viewed with Adobe Reader. This can be downloaded for freefrom Adobe’s website*
How to identify the model of a Porsche 928 engine?
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. Click to Enlarge Click to Enlarge
What is the continuous injection system on a Porsche 928?
The Porsche 928 continuous injection system is very robust when properly set up. However, it requires clean fuel and pressures set to the correct specifications. This 6 page procedure is designed to guide you through setting a baseline fuel tune on The early 928 vacuum-actuated climate control system can be complicated to understand.
When did the O ring change on a Porsche 928?
As specified in Technical Bulletin TB 78-03, a change occurred in 1979 when an o-ring groove was removed from the camshaft and added to the camshaft sleeve bearing. A larger o-ring was required. Specified in TB 78-03: Early o-ring P/N