Can Two Pistons Fire Simultaneously in a V8 Engine?

When discussing the possibility of two pistons firing simultaneously in a V8 engine, it is important to understand the design and operational principles of such engines. While it is theoretically possible to design a setup where two pistons fire simultaneously, this approach is not typically adopted due to the smoothness and power delivery benefits of spaced-out firings.

Engine Design and Smoothness

The primary reason for spacing out piston firings in a V8 engine is to provide better smoothness in power delivery. Each piston fires in a carefully timed sequence, known as the firing order, to ensure a more efficient and smoother operation of the engine. Spacing the firings allows for better torque delivery and a more stable engine performance. Any deviation from this traditional firing order could compromise the smooth operation of the engine.

Risk of Crankshaft Failure

Crankshaft failure is a serious concern in any engine setup, and it is important to handle this aspect with caution. If you attempt to modify the engine to have two pistons fire simultaneously, the crankshaft would need to be modified to mimic the design of a 4-cylinder crankshaft. This involves significant engineering challenges, as well as potential risks to engine integrity. Additionally, the camshaft would also need to be modified, which adds to the complexity of the project.

Practical Considerations and Smoothness

Even if technically feasible, attempting to make all eight pistons fire simultaneously is not recommended due to the potential for reduced engine smoothness. For reference, driving a V12 engine, known for its silky smooth operation, would be a better comparison for the potential roughness of a V8 firing all at once. The firing pulses of a V8, when reconfigured to fire all at once, would likely be much more disruptive and energetic, potentially leading to a harsher driving experience.

Historical Context and Experimentation

Historically, there were attempts at experimenting with single-cylinder engines on dirt tracks in the 1950s. These engines were larger in displacement and were praised for their long firing pulse intervals. This design allowed the tires to settle better into the dirt, providing a better grip. Similar principles could be applied when reducing from a V8 to a V4, but the reduction from a V8 to a V4, or even a V1 setup, would significantly alter the engine's performance characteristics, making it akin to a "Hoppy-Toad," as JimD humorously put it.

Community Engagement and Upvotes

The discussion around engine modifications and their practical implications often includes engaging with the community. Writer engagement with upvotes and feedback is a common part of online discussions. However, it is important to remember that modifications like these can be complex and potentially risky. Always ensure that the modifications align with your goals and safety considerations.