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Celebrating Ken Jansen: The Volkswagen Maestro Keeping Air-Cooled Engines Alive

Electric Vehicles Aug 04, 2026 Matthew B. Crawford

Ken Jansen exemplifies the rare craftsmanship and knowledge found in the performance Volkswagen community, ensuring the legacy of air-cooled engines continues.

Celebrating Ken Jansen: The Volkswagen Maestro Keeping Air-Cooled Engines Alive

Ken Jansen stands as a pivotal figure in the performance air-cooled Volkswagen scene of Northern California. As the lead machinist at Jansen Enterprise, he serves a dedicated clientele of drag racers, crafting motors that have propelled full-bodied Bugs into the 10-second range on the quarter-mile. For those willing to explore beyond standard performance, he's even helped one customer break into the 8-second bracket, showcasing the immense potential of these classic engines when built with care and expertise.

Ken Jansen (left) with the author, showcasing one of the tuned air-cooled VWs he's known for building.Henri Boulanger

Located in Belmont—a town overshadowed by the tech influx of Silicon Valley—Jansen's workshop is emblematic of a bygone era in the automotive trade. Belmont maintains a unique industrial vibe, hosting small shops where skilled tradespeople persevere against the onslaught of modern automated solutions. As the tech world advances, Jansen embodies a blend of pride and practicality, focusing on personal craftsmanship rather than compromising to contemporary trends.

My journey to Jansen began with a simple need: I wanted to polish the bearing journals of a crankshaft. My teenage years spent tinkering with VW engines in the Bay Area during the 1980s informed my decision to return to this passion after years of working with motorcycles. Upon returning to California in 2019, I reached out for recommendations and was directed to Jansen, a decision that would reignite my long-standing love for Volkswagens.

Jansen meticulously inspects a street motor featuring a classic 911-style fan.Henri Boulanger

Before diving back into my family of air-cooled VWs, I found myself reflecting on a significant mentor from my youth, a machinist named Charles Martin, or Chas, who worked at Donsco, a well-known VW speed shop. In 1982, he was an enigmatic figure with his split-window bus packed with tools and a rich amalgam of VWs and personal artifacts. Chas was the type who could unlock the mysteries behind VW performance tuning, effortlessly bridging the gap between mechanical knowledge and the joyous chaos of life in a shop.

Chas taught me about the delicate balance of speed, horsepower, and creativity involved in modifying VW engines. His workshop was a sanctuary for those aspiring to turn their humble bugs into performers. Chas’s ethos was simple yet profound: “Speed costs. How fast do you want to spend?” This wisdom underscored the complexity behind building a powerful engine. What sets such projects apart isn't merely financial investment but a passion for truly understanding the mechanics beneath the car's surface.

Fine-tuning rocker arms to ensure optimal performance, bridging essential mechanical knowledge with practical craftsmanship.Henri Boulanger

Fast-forward to my conversation with Jansen, where nostalgia intertwined seamlessly with the present. As I asked him about his memories of Donsco, we discovered a shared history; he had once worked in the same building that housed Donsco back in the '80s. The recollection instantly forged a connection, weaving our collective experiences into a larger narrative about the importance of mentorship and passing down knowledge in the trades.

Jansen is committed to maintaining the high standards of air-cooled engine performance. He offers sound engine-building advice alongside performing machining tasks like line-boring and honing. Our discussions often became a treasure trove of practical advice, with him shedding light on modifications that ensure optimal performance without relying on online narrations that often lose the subtle nuances of the craft. Unlike many in a digital age, he remains firmly rooted in traditional methods, ensuring quality work remains at the forefront.

Jansen showcases the advantages of using aftermarket aluminum blocks for strength and performance.Henri Boulanger

His daily driver reflects the same spirit of individualism: a Karmann Ghia displaying mismatched panels, a testament to the car's character rather than convention. Jansen's passion didn't create just a business; it nurtured a community where storytelling and experience take priority. The bonding experiences in the shop aren’t always about the cars; they can involve shared community stories like the adventures of a customer racing a Mustang at extraordinary speeds, illuminating the camaraderie in the air-cooled world.

The human touch within these trades is epitomized by moments shared with others in the shop, whether it's Jansen helping a young enthusiast with a problem or engaging in friendly banter about various builds with fellow local mechanics, each with their own history and part in this ongoing narrative. Even a local dog, Bruno, often serves as the shop's unwitting mascot, showcasing the heartwarming nature of the community surrounding Jansen Enterprise.

Support and community are central to Jansen's workshop culture, where lifelong friendships and exchanges of knowledge flourish.Henri Boulanger

In my visits to Jansen, I've encountered various characters, like Derek, who reminisces about the start of Jansen's career under the mentorship of Eddie Grauf at European Car Service. Upon learning about Jansen’s challenges and successes, I became deeply invested in his journey, particularly the compelling tales of his formative years as a mechanic, including grappling with a challenging VW engine that forever altered his life. Each narrative weaves a story about knowledge gained, livelihood, and mastery that spans generations.

One telling incident from Jansen’s past was his encounter with two armed robbers at the shop where he worked. The experience revealed a persistent courage, a trait not just in mechanics but also in how individuals confront adversity in life. Such boldness, unvarnished by convention, is a thread that connects many tradespeople and hobbyists, creating an unspoken bond over shared experiences.

Mentorship is vital in the mechanics world, as seen through Jansen's journey, eclipsing generational divides.Henri Boulanger

In Jansen’s eyes, mentoring creates an essential lineage in craftsmanship. He believes that as one generation learns from another, there’s a chance to maintain the integrity and knowledge of their craft. As I interacted with Jansen, it became evident that our automotive narratives are often intertwined, revealing an invisible connection throughout history. We are all custodians of experiences that transcend mere mechanical skills; they foster relationships that often echo the values of previous generations.

As I delve deeper into the world of air-cooled VWs, the multifaceted relationship between the craft and craftsmanship has begun to reveal itself. There’s an aura of integrity in genuine competence that, while in danger, can be rejuvenated if we genuinely strive to nurture upcoming generations of skilled tradespeople. This dedication to fostering a community of mechanics—where collaboration and learning take precedence over competition—creates an environment ripe for helping air-cooled enthusiasts like myself navigate through mechanical conundrums and beyond.

As I end this reflection, my ongoing trials with my Karmann Ghia remind me of the continuous journey of discovery in this intricate world. Each visit to Jansen offers new layers of insight, lending a sense of comfort and reassurance that the expertise I seek is hardly incidental but part of a community that thrives well within the realm of classic motors. Jansen Enterprise isn’t just a shop; it’s a celebration of craftsmanship, knowledge, and the transmission of automotive passion that connects generations of enthusiasts.

Jansen Enterprise (Belmont, CA)

Open Since: 1996
Crew Size: 3
Blocks Seen Yearly: Lots
Shop Vibe: Under-the-radar, old-school VW speed shop. Friendly!
Sweet Spot: Air-cooled sleepers and quarter-milers.

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Matt Crawford is the New York Times bestselling author of Shop Class as Soulcraft and, most recently, Why We Drive.

This article appeared in print in the July/August issue of Hagerty Drivers Club magazine. Join the club to receive our award-winning magazine and enjoy insider access to automotive events, discounts, roadside assistance, and more.

The post Ode to a Volkswagen Maestro appeared first on Hagerty Media.

Source: Matthew B. Crawford · www.hagerty.com

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