The Mounting System
When it comes to smooth, vibration-free performance in an inboard boat, nothing is more important than the engine mounting system. While stern-drives and outboards use the transom to convey the power to the boat, center-mounted inboards rely on the rear mounts to absorb the energy from the propeller and propel the boat forward. Therefore, an inboard engine manufacturer's first engineering concern is to design a strong and efficient mounting system.
Let's define the properties of the perfect engine mount:
When the engine is first installed, it must be perfectly aligned with the propeller shaft to a ensure a vibration-free ride. Therefore, it must be micro-adjustable to achieve this alignment. PCM's Adjust-A-Flex mounts offer the highest degree of adjustability in the industry.
After installation, the mounts must be able to lock in and maintain the precise alignment for years. PCM's mounts are larger, more robust and extremely heavy-duty to ensure continuing perfect shaft alignment.
Sooner or, in PCM's case, later, the engine will have to be realigned as part of routine maintenance. Therefore, the mounts must be constructed of non-corrosive metals in order to remain easily adjustable. The adjustable components of PCM's mounts are non-corrosive stainless steel, rather than plated steel which is subject to rust and galvanic corrosion.
The mounting system must be able to dampen and absorb vibration to keep it from being transferred to the hull through the stringer system. PCM uses large rubber isolators at both the top and bottom of each mount to better isolate the vibration.
