Here's why:
* VW engines have different cylinder configurations. The 1600cc air-cooled engines used in the classic Volkswagen Beetles, Buses, and other models had a horizontally-opposed (boxer) 4-cylinder configuration. But, newer 1.6L VW engines might be inline-4 or use a different layout.
* "123 and 4" could refer to different things. It could refer to the firing order of the cylinders, the location of specific components (like spark plugs or valves), or even the placement of accessory belts.
To get a precise answer, you need to clarify what you're looking for:
* What kind of VW 1600cc engine are you working with? Be specific about the model and year.
* What do you mean by "123 and 4"? Are you asking about cylinder order, component location, etc.?
Once you provide these details, I can assist you in finding the correct information.
