Opel Kadett Rallye - Edwin Wolves - WP9 - Rallye Köln-Ahrweiler 2012

die neunte Wertungsprüfung "Eifeler Land" beginnt in Fuchshofen mit engen Serpentinen und führt in Richtung Reifferscheid. Vor dem Ortseingang nach Reifferscheid geht es abseits der Straße über eine längere Schotterpassage.

[@Grumpy_old_Boot]

The Kadett Rallye from the late 70's usually ran with Opels 1.9 Liter CIH (Cam In Head) engine with BOSCH injection system. It was later the template for the entire GM Family II engine.
Offcourse, it's probably tuned somewhat with Weber Carbs and race exhaust.
Which is probably why it sounds a lot like a 4AGE engine.

[@daugbret]

Does this car have a 4AGE? Or is it some other 4-cyl that just happens to sound exactly the same?