Volkswagen 1.8 20V turbo engine is one of the most popular and reliable engines produced from 1994 to 2010 and installed in many models of Audi, Volkswagen, SEAT and Škoda. It was produced at Audi Hungaria Motor Kft., Salzgitter and Puebla plants and belongs to the EA113 family. This engine is a turbocharged inline 4-cylinder unit with an injector feed system, which provides high power and excellent fuel economy.
Engine Specifications
| Parameter | Value |
|---|---|
| Motor brand | EA113 |
| Years of production | 1994-2010 |
| Cylinder block material | Cast iron |
| Power system | Injector |
| Type | Ready |
| Number of cylinders | 4 |
| Valves per cylinder | 5 |
| Piston stroke, mm | 86.4 |
| Cylinder diameter, mm | 81 |
| Compression ratio | 9.5 |
| Engine displacement, cc | 1781 |
| Engine weight, kg | ~150 |
| Operating temperature, °C | 90 |
| Engine life, thousand km | 300+ (factory); in practice – more than 400 with good maintenance |
Power and Torque
| Power (hp/rpm) | Torque (Nm/rpm) | Fuel |
|---|---|---|
| 150 / 5700 | 210 / 1750-4600 | 95 |
| 163 / 5700 | 225 / 1750-4700 | 95 |
| 170 / 5900 | 225 / 1950-5000 | 95 |
| 180 / 5500 | 235 / 1950-5000 | 95 |
| 190 / 5700 | 240 / 1950-4700 | 95 |
| 210 / 5800 | 270 / 2100-5000 | 95 |
| 225 / 5900 | 280 / 2200-5500 | 95 |
| 240 / 5700 | 320 / 2300-5000 | 95 |
Oil
Oil plays a key role in the reliability and durability of the 1.8 20V turbo engine. For this engine, synthetic oils with a viscosity of 5W-30, 0W-40 or 5W-40 are recommended. These oils are suitable for high temperature operation and protect the turbine and critical components from wear. The factory recommends changing the oil every 15,000 km, but many owners prefer a more frequent change – every 7,500 km – to provide additional engine protection, especially in urban driving conditions.
In addition, the engine has an allowable oil consumption of up to 1,000 g per 1,000 km, which is due to its design features and the use of a turbocharger. This consumption is considered normal for these engines, but significant increases may indicate worn seals or other components that require diagnosis.
Reliability and Life
The 1.8 20V turbo engine is known for its reliability. With quality maintenance and the use of recommended oils, it can serve more than 300 thousand kilometers. In practice, the resource can reach 400+ thousand kilometers, which is due to the high strength of the design and the use of cast iron in the cylinder block. Resistance to loads and the ability to withstand forcing make it popular among car enthusiasts and tuners.
Faults and repairs of the Volkswagen 1.8 turbo engine
Engine AGU 1.8In front of us is a modified version of the well-known atmospheric 1.8 liter four-cylinder VW engine, the main innovation of which is the use of turbocharging with a small intercooler. It uses a cast-iron cylinder block with a height of 220 mm, in which there is a crankshaft with a stroke of 86.4 mm, connecting rods with a length of 144 mm and pistons with a diameter of 81 mm and height of 32.7 mm.
The engine uses a 20-valve cylinder head with 5 valves per cylinder (3 intake and 2 exhaust), with a variable valve timing system on the intake shaft. There are hydrocompensators, so you will not need to adjust the valves on the 1.8T.
In the drive of the timing belt is used, which should be changed every ~60.000 km, if the belt is broken, the motor will bend the valves.
In 2004, this motor was replaced by a new, more perfect and powerful VW 2.0 TFSI.
VW 1.8T engine modifications
- AEB (1997-1999) – motor with a compression ratio of 9.5 and under the environmental standard TLEV with ECU Motronic M3.8.2. Supercharger pressure here is 0.5 bar, and the power is 150 hp at 5700 rpm, torque 210 Nm at 1750-4600 rpm. The AEB engine was replaced in 1999 by the ATW engine, which is characterized by electronic throttle, secondary air supply, Bosch Motronic ME7.5 ECU and compliance with environmental standards LEV. These engines were placed longitudinally. Also the successor of AEB is AMB.
- AGU is the analog of AEB for transverse installation.
- AJH, APH, ARX, ARZ, AUM, AVC, AWD, AWL, AWT, AWW, BJX, BKF, BKV, CFMA – 150 strong variations of the engine, turbine KKK K03-005 is used. The engines were put on: Audi A3, Audi A4, Audi A6, Audi TT, SEAT Ibiza, SEAT Exeo, Skoda Octavia, VW Bora, VW Golf IV GTI, VW New Beetle, VW Passat B5, VW Polo GTI.
- AQX,AYP – 156 hp modifications, compression ratio 9.5. Produced for Seat Cordoba and Seat Ibiza.
- BFB, BKB, CED – 160 strong versions, the turbine KKK K03-029 is used. The engines were put on: Audi A4, VW Passat.
- AMB, AWM – 170 hp versions, uses turbine KKK K03-029, pressure 0.6 bar. Motors were put on: Audi A4, VW Jetta, VW New Beetle, VW Passat.
- AJQ, APP, ARY, ATC, AUQ, AWP, BEK, BNU, BBU – variations with output of 180 hp, turbine KKK K03-005 is used. They were put on: Audi A3, Audi A4, Audi TT, SEAT León, SEAT Toledo, Skoda Octavia vRS, VW Bora, VW Golf 4 GTI, VW New Beetle, VW Polo GTI.
- BEX, BVR – 190 hp versions, KKK K03-073 turbocharger is used. They were put on: Audi A4, Audi TT.
- APY, AUL, AMK – versions with 210 hp, turbocharger KKK K04-015 is used. The engines were equipped with: Audi S3, SEAT Leon Cupra R.
- AMU, APX, BAM, BEA – 225-horsepower modifications with turbine KKK K04-022. The engines were put on: Audi TT, Audi S3, SEAT Leon Cupra R.
- BFV – the most powerful of civil modifications on the basis of this motor, the engine output is 240 hp. The turbocharger KKK K04-023 is used, compression ratio 9. The Audi TT was equipped with this power unit.
The weak points of VW 1.8T, breakdowns and their causes
This motor, in the field of malfunctions, largely repeats its atmospheric counterpart, there are the same problems with revs, unstable work, there may be noises, oil leaks and other things. Specifics on these issues are here.
The situation is slightly complicated by the presence of supercharging, as a consequence, increased loads, the standard turbine goes +/- 250.000 km. In general, the power unit is not bad, with normal maintenance, the motor will go quite a long time, the engine resource ~300,000 km, depending on the manner of operation.
Tuning engine Volkswagen 1.8 Turbo
Chip tuning
Regarding atmospherics, tuning of initially turbo engines is not too complicated, if we are talking about a small increase. The easiest and fastest option, in our case, is the usual chip tuning. In contrast to chip atmospheric engines, this procedure makes sense on the turbine.
Versions of 150 hp engines can be made 180-200 strong, the final result depends on the modification of the motor and its design of the cylinder head.
To fully realize the potential of the standard turbocharger, we do a typical chip-and-blow intake. We change the standard filter to a null filter or put a cold intake system, intercooler, remove the catalytic converter, put a jar like real street racers and get about 200-220 hp.
Further movement can be continued on the turbo kit with Volkswagen turbine KKK K04, the procedure is standard and is carried out at every step. The output increases to 240-250 hp, this option is the most rational and the best choice in the field of price-performance. If even this is not enough, then you need to look for turbo kits on Garrett GT28 turbos or larger, port the head, saw the channels, put the appropriate high-performance injectors, exhaust on a 3″ pipe and so on.
MOTOR RATING: 4-