Ep 48. Hydraulic vs. Solid Lifters: the Redux!

In season 4 episode 48 of Engine Masters, titled "Hydraulic vs. Solid Lifters: the Redux!", the team is revisiting a popular topic from a previous episode: the debate between hydraulic and solid lifters.

Host David Freiburger and Steve Dulcich are joined by guest expert, Erson Camshafts, as they explore the differences between hydraulic and solid lifters in terms of their camshaft profile, valve lift, and overall performance. They dive into the theory behind both types of lifters and test them out on a Pontiac 400 engine, comparing the results of each.

The team first analyzes the hydraulic lifter, which relies on oil pressure to pump up the lifter and take up the slack between the valve and the lifter. They discuss how this affects the camshaft profile and results in a flatter curve than solid lifters. The team then moves on to test the hydraulic lifter on the engine and measures the valve lift and RPM range.

Next, the team looks at the solid lifter, which has no give and maintains constant contact with the camshaft profile. They outline the advantages of solid lifters, including a more aggressive camshaft profile and the ability to rev higher. The team then tests the solid lifters on the same engine and measures the valve lift and RPM range.

Throughout the episode, the team provides detailed explanations and analysis of each lifter type, allowing viewers to gain a deeper understanding of their function and performance. They also address some common misconceptions about both types of lifters and discuss the pros and cons of each.

In addition to the lifter comparison, the team also discusses other factors that can affect engine performance, such as valve spring pressure and camshaft duration. They provide tips and tricks for optimizing engine performance and offer insights into how these changes can affect the overall feel and sound of the engine.

Overall, "Hydraulic vs. Solid Lifters: the Redux!" is an informative and engaging episode that provides valuable insights into the world of engine building and performance tuning. Whether you're a seasoned mechanic or simply a car enthusiast, this episode is sure to offer valuable insights and tips for optimizing your engine's performance.