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Diesel engine motor mounts: No matter the quality of engine mounts, they begin to wear down after usage and eventually require replacement. Not replacing an engine mount that is past its prime can inflict damage to the engine, cause discomfort for operators and potentially be a safety risk if the engine isn’t secured…. Here’s a view of some of the better-quality ones ranging and horsepower from 100hp-700hp and ranging in weight from 200lbs-1500lbs 

Marine Diesel Engine Motor Mounts:

Marine Diesel Engine Motor Mounts installed by our trained technicians at, Santa Barbara Marine Diesel Mechanic, servicing Channel Islands Marina, Ventura Harbor & Santa Barbara.

The Importance of Marine Engine Motor Mounts:

Having a quality marine engine motor mount installed is the difference between a quiet, low vibration, firmly mounted engine and a loud, out of alignment, damaged engine. Damaged or worn engine mounts should be replaced as soon as possible because an engine that sits low can begin to cause misalignment of transmission to shaft, a worn cutlass bearing or damaged components such as the shaft, transmission or propeller.

Marine Diesel Engine Force:

The force of the high revving engine is passed directly onto the mount and even the smallest one-cylinder diesel engines can produce a large amount of force and vibration. There are many forces that are applied on the engine, there is the force of the motor and transmission weight as well as the shearing force of the propeller under thrust. For these reasons, engine mounts are compressed on one side while being stretched on the other. In severe conditions, such a dangerous storm, the engine mount which is essentially rubber bonded to metal takes considerable abuse over time.

It is important that the engine mount not be too soft or too hard as choosing an incorrect mount can make your problem worse. We have a marine propulsion engine mount calculator that is helpful in sizing mounts, click the image below to. Please contact us if you need assistance locating the best engine mount for your unique application. 

Replacing marine engine motor mounts is a common maintenance task for boat owners, and it can be crucial for several reasons. Here’s why a marine mechanic, such as one from 805 Marine, might perform this service:

  1. Vibration Reduction: Over time, motor mounts can wear out and become less effective at dampening vibrations from the engine. This can lead to increased noise and discomfort on the boat. New mounts can significantly reduce vibrations and improve the overall boating experience.

  2. Alignment Maintenance: Proper alignment of the engine and drive system is essential for smooth operation. Worn mounts can cause misalignment, leading to increased wear on other components and potential damage to the drivetrain.

  3. Preventing Damage: Old or damaged motor mounts can fail, causing the engine to shift or move excessively. This can lead to damage to the engine, transmission, and surrounding components. Replacing the mounts proactively can prevent costly repairs down the line.

  4. Safety: Secure motor mounts ensure the engine stays in place during operation, which is critical for the safety of the boat and its occupants. Loose or damaged mounts can be a safety hazard, especially in rough waters.

  5. Performance: Engine performance can be affected by the condition of the motor mounts. New mounts can help maintain optimal engine performance and efficiency.

Having a qualified marine mechanic like those from 805 Marine perform this service ensures that it is done correctly and safely, using the appropriate parts and techniques for your specific engine and boat model.

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