General description of the engine (Audi 80 B3)

The engine is a 5 - cylinder, in-line, overhead camshaft, traditionally mounted on the front side of the car. The crankshaft has six bearings, main bearing shells No.4 (from the front end of the engine) have flanges or separate thrust washers to adjust the crankshaft lateral play. The camshaft is driven by a toothed belt from the crankshaft sprocket, the belt also drives the water pump mounted on the left side of the block. The 20-valve engine has two overhead camshafts connected at the front by a chain and sprockets. The exhaust camshaft is driven by a sprocket from the toothed belt. The sprocket is on the rear of the camshaft (or intake camshaft on 20-valve engines) drives the distributor.

The valves are controlled from the camshaft via hydraulic tappets.

The engine has a full-flow lubrication system. The half-moon gear type oil pump is mounted in front of the crankshaft. The oil filter is mounted on the right side of the cylinder block.