VW EA113 Engines: ADY AGG AQY AZM 2.0

Volkswagen produced a series of 2.0-liter engines with an 8-valve aluminum cylinder head that were used in popular VW and SEAT models from the early 1990s to the early 2000s. These engines are characterized by high reliability and durability.

Characteristics of VW EA113 2.0 engines

Models on which engines were installed

Design and repair of ADY AGG AQY AZM engines

In 1994, Volkswagen released another version of the 2.0-liter motor called ADY. This motor replaced the 2E engine. It used a cast-iron cylinder block with a height of 236 mm, inside which is installed a crankshaft with a stroke of 92.8 mm, cylinder diameter 82.5 mm, piston height 30.9 mm, compression ratio 10, length of connecting rods 159 mm.

The cylinder head is aluminum, has one camshaft and 8 valves. The diameter of inlet valves is 39.5 mm, exhaust valves 32.9 mm, valve stem diameter is 7 mm. The timing system uses a belt, which is recommended to change every 90 thousand kilometers. If it is not done, the risk of timing belt breakage increases and your ADY will bend valves.

Distributed fuel injection is used here, and the engine is controlled by Siemens Simos 4S. The exhaust of such a motor is within the limits of ecological class Euro 2.

The ADY engine had an output of 115 hp at 5400 rpm, torque 166 Nm at 3200 rpm.

A year later the AGG engine was released, which had a compression ratio of 9.6, new pistons and camshaft, its specifications were as follows: 115 hp at 5400 rpm, torque 166 Nm at 2600 rpm. This engine also met the environmental requirements of Euro-2 standard.

In 1998, they began producing AQY engine, which had a low cylinder block (height 220 mm), oil injectors, new lightweight pistons for compression ratio of 10.5 (piston height 29.3 mm), connecting rods 144 mm, a new head, where inlet and exhaust from different sides of the cylinder head, lightweight valve train, a system of additional air supply to the catalytic converter, a new ECU Bosch Motronic 5.9.2. These motors met Euro-4 standards. Power remained unchanged – 115 hp at 5200 rpm, torque 170 Nm at 2400 rpm.

There was also an analog with one lambda-probe under Euro-2, such an engine is called Volkswagen APK.

After 2 more years began to produce engines AUZ, ASU, AVA, ATF, which had an electronic throttle, intake manifold with variable geometry, variable valve timing system and controlled by Bosch Motronic ME 7.5 or Simos 3.2 (longitudinal arrangement). This resulted in a power output of 120 hp at 5600 rpm, 175 Nm of torque at 2600 rpm. Environmental class AUZ, ASU, AVA is the same – Euro 4.

The ATF motor was intended for transverse installation, all other engines were for Volkswagen Passat.

AZM engine appeared at the end of 2000 and replaced AUZ, ASU and AVA, it did not have variable valve timing systems and used Simos 3.2 brains. Power of this engine was 115 hp at 5400 rpm, torque 172 Nm at 3500 rpm. It was put on Passat B5, in 2003 Passat was updated to B5.5 and this engine changed its name to BFF.

A year later, production of AZJ engine began, which had 2 balancer shafts, and to compensate for small losses, a 2-stage intake manifold was installed. It also used slightly modified connecting rods, the cylinder-head cover was changed, the exhaust manifold was 4-1, individual ignition coils and Bosch Motronic ME 7.5 ECU. It also met Euro-4 environmental standards.

Its characteristics have not changed too much: power 115 hp at 5400 rpm, torque 172 Nm at 3200 rpm.

For all-wheel drive Skoda Octavia, VW Golf 4 and VW Bora, AZH engine was produced with other pistons and connecting rods, with a single-stage intake manifold and with Bosch Motronic ME 7.5 ECU. It had an output of 115 hp at 5,400 rpm and 170 Nm of torque at 2,400 rpm.

For Volkswagen Sharan and SEAT Alhambra produced motor ATM, which replaced there ADY. Its output is 115 hp at 5200 rpm, torque 170 Nm at 2600 rpm.

All the above engines are similar to the 8-valve VW 1.6 MPi or 1.8 liter ABS, ADZ and other motors.

Production of VW’s 8-valve 2.0 liter motors continued until 2010, but they were almost entirely replaced by the 2.0 FSI starting in 2004.

Disadvantages and problems of EA113 2.0 engines

These are simple and fairly reliable motors, but all of them are in one of three states: old, very old or ancient. As a result, all of them have long exhausted their resource, so you should not be surprised when you have a high oil consumption. You do not need to invent anything, you need to do a complete overhaul and bring the motor to a normal state. Replacement of caps and rings can give a temporary result.

Otherwise, there are no problems, for leisurely movement in the city it is a normal option. The resource of Volkswagen ADY AGG AQY AZM engines, with quality regular maintenance, exceeds 400 thousand kilometers and more.

Tuning engines ADY AGG AQY AZM

These engines were designed for normal driving, as well as 1.6-liter brethren, but for larger cars. There is the simplest option with a firmware that can give up to 130hp if you’re lucky.
You can also put a 16-valve head from ABF, with all the attachments and with improvements to the pistons, but it may be cheaper to buy a contract 2.0 16-valve motor. And on such a motor already put a Chinese turbokit on January, but this is a different story.

MOTOR RATING: 4+