During one of our never-ending technical discussions, Jim Grubbs at Jim Grubbs Motorsports (JGM) suggested that we take a look at the flow difference between 30- and 45-degree valve seats. While ...

Wet flow testing has moved in and out of the realms of mainstream power topics many times during the last 40 years. Like many aspects of race engine development that are a step aside of normally ...

When a power plant experiences issues with performance, the obvious indicators are usually a loss in load capacity or an increase in fuel consumption. However, other issues exist that can be costly, ...