Installing Drive Belt Kit on 1.8L 20V Audi A4 Engine - Engine Builder Magazine

Installing Drive Belt Kit on 1.8L 20V Audi A4 Engine

(Retrofitting hydraulic damper on vehicles built before
1998)

 

Problem:

The
belt drive makes noise after operating for a short time.

Cause:

The
newly installed tension roller is not the correct distance from the engine and
allows the belt to rub on the side of the inner flanged wheel

Solution:

When refitting
vehicles built before and during 1998, the old version stud bolt (1) must be
removed. The new version is then screwed into the same hole with a pre-mounted
spacer (2). The problem here is that the manufacturer has two different thicknesses of the spacer (3.1) + (3.2) which
define the distance from the roller to the engine. Despite the vehicle
Identification No. or (prod. Month: 01/96) it is still not absolutely
definitive which kit must be used. Assure proper belt alignment after tension
roller is replaced. If misalignment occurs, there will be noises and
catastrophic damage to the engine.

Tech Tip courtesy of ContiTech.
old tension rollerNew tension roller, drive belt kit p/n CT 919K4/K5

You May Also Like

Factors of Crankshaft Selection

From the high-performance powerplants propelling Top Fuel dragsters to the subdued engines found in family sedans and grocery getters, each crank must be tailored to, and appropriate for, its specific application.

We know a crankshaft plays a critical role in an engine’s performance, converting reciprocating motion into rotary motion while serving as the backbone of the entire system. It must be strong enough to withstand the continuous pounding of rods and pistons, yet possess enough elasticity to absorb vibrations and flex, albeit slightly, when needed.

Shop Solutions March 2024

I always keep a pair of needle nose pliers and a small, straight screwdriver in my blast cabinet to hold small parts when blasting.

Degreeing the Camshaft and Checking Valve-to-Piston Clearance

Jeff McCord of LinCo Diesel Performance walks you through degreeing a camshaft and checking valve-to-piston clearance.

Designing a Better LS Engine

After a customer wanted a Steve Morris Engines’ SMX in an LS version, Steve saw the upside and potential in the market, and a challenge to build a better LS.

Other Posts

The Importance of a Good Valve Job

The valve job ensures the mating surfaces of the valves and the seats properly control the air/fuel mixture.

Getting Better Cylinder Head Airflow

When it comes to improving horsepower and rpm, airflow has a lot to do with it, and it seems the job is one that’s never finished.

Horsepower and Head Gasket Technology

Head gaskets have one of the toughest job in an engine, and now we’re pushing them harder than ever, making it easier to expose the slightest weakness.

Inside the Development of Frankenstein’s F-Series LS Cylinder Heads

Right away, engine builders knew it was special.