Smoother running under engine

Marine engine mounts are designed to isolate engine vibration noise from the boat’s structure, but it seems all too often that manufacturers install engines on mounts that do not isolate as well as they could.

My mounts were 13 years old and I wanted to make my engine quieter so I took the opportunity to replace them with ‘quieter’ ones.

How do engine mounts work?

The rubber bonded within engine mounts comes in varying degrees of hardness. Softer rubber gives better isolation but it has less load support and may allow more engine movement than hard rubber.

Anti-vibration (AV) rubber hardness is expressed in