Show Notes
Air-cooling a Volkswagen engine has always been as much science as it is art. For decades, enthusiasts have debated which fan shroud cools the best, what compression ratio is ideal, which cylinder heads run the coolest, and how today's fuels affect engine temperatures. This week on Let's Talk Dubs, we're joined by one of the most respected names in air-cooled Volkswagen engine development—Jake Raby. Jake shares the incredible story behind the extensive cooling research that changed the way many enthusiasts think about building reliable, high-performance air-cooled engines. Beginning in 2006, Jake embarked on an ambitious cross-country journey in his famous blue "BluebonicPlague" Beetle, outfitted with more than 20 sensors strategically placed throughout the engine. Every mile of the trip generated an enormous amount of real-world data, with over two gigabytes of information recorded to analyze everything from cylinder head temperatures and oil temperatures to airflow characteristics and cooling efficiency under actual driving conditions. Rather than relying on opinions or bench racing, Jake set out to answer the questions that Volkswagen enthusiasts have argued about for generations—with data. In this episode, we take a look into: The evolution of VW cooling system design.
The strengths and weaknesses of the various fan shrouds and cooling kits available today.
Why some cooling systems outperform others in real-world driving.
The relationship between engine displacement, compression ratio, ignition timing, and operating temperatures.
How cylinder head design dramatically affects engine longevity and cooling.
The impact of modern ethanol-blended fuels on air-cooled engines.
Common misconceptions about engine temperature and reliability.
The testing methods Jake developed to remove guesswork from engine building.
Whether you're assembling a mild street engine, building a powerful Type 4, or simply trying to keep your classic Volkswagen running cooler and more reliably, this episode is packed with decades of hard-earned knowledge backed by real-world testing and engineering. If you've ever wondered what really keeps an air-cooled Volkswagen alive—and what actually works versus what has simply become accepted folklore—this is an episode you won't want to miss. DTM Shrouds 912 Engine Teardown link Jake's Road Trip data www.vwtrendsmagazine.com www.rosswulf.com use code LTD 10 To get 10% off yur purchase ICON Pistons Here
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Finding the right vintage Volkswagen or that one hard-to-find part should be part of the fun. For longtime VW enthusiast and collector Chris Picco, searching classifieds on a phone often felt harder than it needed to be. From his home in Ontario, Canada, he decided to build the kind of marketplace he wanted to use. Chris created **VWTraders.com**, a free Volkswagen classifieds site designed to be easy to browse and open to buyers and sellers around the world. It's his way of giving back to the hobby and helping VW people connect over the cars and parts they love. In Episode 374, Chris joins me to talk about how he first got into Volkswagens, the cars and experiences that shaped his passion, and what it took to turn an idea into a site for the VW community. We also get into the challenges of buying and selling in today's classifieds market and what Chris hopes VWTraders.com can offer enthusiasts worldwide. Whether you're hunting for your next project, looking for parts, or just enjoy hearing how VW people turn a passion into something useful for the scene, check out this conversation with Chris Picco. Enjoy the episode!
Danny Foerster has spent years working in the automotive industry, specializing in fuel injection, tuning, and programming. As an air-cooled Volkswagen enthusiast, he saw the need for an EFI system that was reliable, easy to install, and truly designed for the everyday VW owner. The result is the Forster Performance plug-and-play fuel-injection system. In this episode, Danny explains how he developed one of the most comprehensive EFI conversions available for a stock Volkswagen engine. The goal was simple: create a true "set it and forget it" system that works right out of the box. No more fighting with a 34 PICT-3 carburetor, changing jets for different elevations, dealing with cold-start problems, or constantly adjusting the engine as driving conditions change. We dig into how electronic fuel injection works, the programming and testing behind Danny's system, and the decisions he made to keep the installation as straightforward as possible. This kit gives your stock Beetle modern drivability while preserving the character and simplicity that make air-cooled Volkswagens so much fun. Also who would complain about an 8hp gain & 11lbft of torque The Foerster Performance EFI kit is available through Red-E Motorsports and Washburn's Metal. Dam Volks in Boulder City, Nevada, also has a kit available. enjoy
Back in June at the Luft Zeigen show I had an opportunity to sit down with Danny a a.k.a. Danny Alvarez one of the old-school lettering guys that let a lot of cars back in the 80s cars like red alert, bad temper, bad temper too and many more. We sit down with Danny talk about what it took to get into the business with lettering and how that all started and some of his history short interview it's pretty good. Also, William Nera fresh out of death row, and now on the path to make things better he's got a new book out where he works with trying to help solve murder cases. Good to see him trying to turn things around his life and be a positive influence. A good lesson short podcast but good see you at one weekend 2026.