Audi 80/Avant (B4)

since 1991-1995 release

Repair and operation of the car



Audi 80/Avant
+ Technical specification
+ Engines
- System of production of the fulfilled gases
   Check of a suspension bracket and condition of system of production of the fulfilled gases
   Replacement of system of production of the fulfilled gases
   Removal of separate elements
+ Cooling system
+ Fuel tank and fuel pump
+ Air filter and airintaking channels
+ System of injection
+ Coupling
+ Transmission and transmission
+ Suspension bracket and steering
+ Brake system
+ Anti-blocking system of brakes
+ Wheels and tires
+ Body electrical system
+ System of ignition
+ Lighting
+ Signaling devices
+ Devices and auxiliary devices
+ Heating and ventilation
+ Body elements
+ Search of malfunctions
+ Specifications





System of production of the fulfilled gases

In these drawings systems of production of exhaust gases of the front-wheel Audi 80 models are shown.


66 kW 4-cylinder engine:

1 – forward exhaust pipe;
2 – catalyst;
3 – main muffler;
4 – additional muffler.

85 kW 4-cylinder engine:

5 – forward exhaust pipe;
6 – catalyst;
3 – main muffler;
4 – additional muffler.

133 kW 5-cylinder engine:

7 – forward exhaust pipe;
8 – catalyst;
9 – main muffler;
10 – additional muffler.

110/128 kW 6-cylinder engine:

11 – forward exhaust pipes with catalysts for both rows of cylinders;
12 – main muffler;
13 – additional muffler.

Depending on the installed engine the Audi 80 car is supplied with the system of production of the fulfilled gases designed completely in own way. Besides, there are basic distinctions between systems of production of the fulfilled gases of front-wheel and all-wheel drive models.

Components of system of production of the fulfilled gases

Front-wheel models

  • The final collector is attached to the block of cylinders.
  • It is followed by a forward exhaust pipe which is executed at the 66 kW engine of unary.
    The 85 kW 4-cylinder engine and the 5-cylinder engine are supplied with the double pipe passing into an unary pipe.
    Absolutely the exhaust system at the 6-cylinder engine is in a different way arranged: two forward exhaust pipes from which everyone is supplied with the catalyst.
  • Catalytic converter with a short piece of a pipe is the following instance in system of production of exhaust gases at 4-and 5-cylinder engines. At the 6-cylinder engine again all in a different way: here short pieces of a pipe are located.
  • Further away middle (main) and additional mufflers are installed. The main muffler 5-and 6-cylinder models at which two mufflers stand as if the friend opposite to the friend on the right and to the left of a longitudinal axis of the car is swept especially up.
  • On the example of the additional muffler the hierarchy of models is shown: at 6-cylinder model a tip double.

All-wheel drive models (quattro)

To catalytic converter of system of production of the fulfilled gases of front-wheel and all-wheel drive models are identical. Then distinctions begin:

  • At the 6-cylinder engine the intermediate bifurcate pipe reduces both pipes (leaving from catalytic converters) in one.
  • Here the main and additional mufflers which at original final system are rigidly connected among themselves by means of the passing pipe piece are connected. At repair it is possible to install both mufflers and separately.
  • These components are identical to all models. The double main muffler of front-wheel models in all-wheel drive models is replaced with the volume unary muffler. The additional muffler is supplied with a double tip.








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