1.8T engine block guide
1.8T Tuning: Block and connecting rods
Here you'll get all the info you need to get to 500 PS and beyond with your 1.8T engine block and connecting rods. We show you where the engine is installed, how the block is built, its bearings, crankshaft, pistons and connecting rods and more! You'll also learn which tuning parts you need for your 1.8T engine to get the maximum performance out of it. There's something for every performance goal.
- 1. What cars have a 1.8T engine?
- 2. The engine block of the 1.8T engine
- 3. 1.8T engine main bearing/bearing shells
- 4. The crankshaft of the 1.8T engine
- 5. The con-rods in the 1.8T engine
- 6. The 1.8T piston
- 7. This is how the upgrade to 300+ PS will succeed.
- 8. What you need to upgrade to 400+ PS
- 9. This is how you successfully upgrade to 500+ PS
- 10. Do you have more questions about 1.8T tuning?
The engine block of the 1.8T engine
There are two different engine blocks. The 058 engine block was installed up to the production date of May 2000. In the Audi A4 B5, it is longitudinally mounted only. It has an internal intermediate shaft and an external water pump.
06A engine blocks, on the other hand, have no intermediate shaft, and the water pump is driven by the cam belt. They are installed in all vehicles with transverse engines.
1.8T engine main bearing/bearing shells
The crankshaft of the 1.8T engine
All 1.8T crankshafts have a stroke of 86.4 mm. They are made of cast iron or are forged. There are two different wheels used to determine the engine speed.
The con-rods in the 1.8T engine
All 1.8T con-rods have a length (hole center to hole center) of 144 mm and a width of 24.9 mm.
- 06A engines have a 19 mm piston pin (except 225 PS models that have a 20 mm piston pin)
- 058 engines all have a 20 mm piston pin
The 1.8T piston
This is how the upgrade to 300+ PS will succeed.
As of a desired performance of 300 PS, we recommend the use of upgrade pistons and con-rods. This combination only works when the cylinder walls are in good condition, though. You get matching combinations of pistons and con-rods for your 1.8T engine from us.
Con-rods with oil drilling hole:
The oil drilling hole is a hole that is present from the small to the large side of the con-rod (riffle drilled). Thanks to this additional oiling, the piston pin has a considerably longer service life.
Bolts/studs:
What you need to upgrade to 400+ hp
1.8T cam belt system:
Main bearing
Main bearing supports
This is how you successfully upgrade to 500+ PS
Crankshaft
Vibration dampers
Piston pins
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