Technical characteristics of the valve timing mechanism of 8-valve engines (Opel Kadett E)

The engine uses a valve timing mechanism with an overhead camshaft installed in a separate housing secured to the top of the cylinder head. The camshaft is driven by a toothed belt from the crankshaft pulley.

Camshaft Drive Belt

Brand and type of timing belt: Umroyal Powergrip 40 305x19 mm, catalog number GM 90 122 429.

Width, mm:

• engines "13N", "13S": 15;
• other engines: 19.

Number of teeth:

• engines "13N", "13S": 104;
• other engines: 111.

On engines "13N", "13S", "16S", "18E", "14NV", "16SV" (until June 1990.) the tension of the toothed belt is adjusted by turning the water pump housing. On engines "14NV", "16SV", "C16NZ" since July 1990, and also on engines "18SE", "20NE", "C20NE", "20SEH", "20XE" toothed belt tension is adjusted automatically by a tension roller.

Camshaft

The camshaft is cast iron, overhead, and is installed in a removable housing secured to the top of the cylinder head. The shaft is mounted on five bearings.

Camshaft characteristics

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*The numerator indicates the value for the intake cams, the denominator indicates the value for the exhaust cams.
**Additionally a grey mark is applied.

Dimensions of camshaft journals and bearing bushing holes