SailNet Community - View Single Post - Yanmar 4JH air filter
View Single Post
post #2 of Old 12-23-2006
Senior Member
RichH's Avatar
Join Date: Jul 2000
Location: Pennsylvania
Posts: 3,640
Thanks: 25
Thanked 171 Times in 160 Posts
Rep Power: 17
Most of what you see on marine diesels are not filters but 'silencers'. Even in the middle of the ocean, air is 'dirty' and containes a lot of hard submicronic particulate - especially if there is a desert or volcano upwind. Does this affect the service life of an engine ... probably not as these particles are extremely small and approach being 'harmless' to the engine as they contain little inertia / mass once inside. If you are keen to actually put a FILTER on the engine you can apply 'retro-fits' such as the dry paper elements from such manufacturers as "K&N", etc. ... just be sure to well 'oversize' the filter ... based on 'cubic ft. per miniute' of volumetric aspiration of the engine at 'wide open throttle'. Forget about 'wet' or oil-bath filters as they are essentially 'worthless'.
RichH is online now  
Quote Share with Facebook
For the best viewing experience please update your browser to Google Chrome