To many people, building a high-performance, air-cooled VW engine can seem like a daunting task. Internet forums are full to bursting with the dos and don’ts and a plethora of horror stories of what happens when things go wrong. However, provided you are happy to invest a good chunk of patience, refuse to cut corners and, where necessary, make sure you have the correct tools and equipment, building a reliable, powerful VW engine is well within the capabilities of most home mechanics. After all, the humble VW engine is a simple beast and, compared to many engines, has relatively few parts. In fact, I’d go so far as to say bolting one together is pretty straightforward. The devil, as they say, is in the detail. Specifically, making sure all the…