carburetor

In this installment of Summit Racing’s Quick Flicks, you will learn about the main metering circuit on your Holley-style carburetor. The video is 15 minutes long and covers adjusting the primary jets, tuning the secondary jets, and finally, the Venturi effect and how it affects your carburetor’s performance.    

Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. Last week, we tackled a rich air/fuel condition. This week, we’re revisiting the popular subject and offering up a few more possible solutions as well as some general tuning tips. J.R. • Summerland, CA Q: I have a 1964 Nova that I

[portfolio_slideshow id=10792] Engines produce vacuum, and over the past 120 years, engineers have contrived ingenious ways to harness its power to the engine’s induction system. Through a labyrinth of small-bore drillings in the carburetor, the vacuum draws a potent mixture of air and fuel. So formidable is the mixture, it empowers naturally aspirated full-bodied 500-cubic-inch

[portfolio_slideshow id=10444] If you ever have the chance to discuss engine tuning troubles with the legendary Jon Kaase, you’ll rejoice in his simple logic: “Most engine troubles are centered on spark or fuel—if it has the former, it is either getting too much or too little of the latter,” Kaase says. With help from the

Few parts are more synonymous with a classic American hot rod than the carburetor. Ironically, few parts are more misunderstood than the venerable carb, which still came equipped on some vehicle models as late as the 1990s. The carburetor, which is essentially an air pump that feeds your engine with air and fuel, remains a