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Hi there.
I’ve just bought a sailboat with a new’ish 39hp Yanmar engine and a 20+ yr old tank. With diesel bug apparently becoming more prevalent, I’m looking around at ways of making sure the quality of the fuel getting to the engine is good, and that we avoid clogged filters as much as possible.
While researching, I found the Fleetguard Multi-stage “The seaboard way” article here https://www.sbmar.com/articles/marine-fuel-filtration-the-seaboard-way/ , and later found a small sailing yacht using this system http://www.cruisingindigo.com/fuel-system.html
Without knowing much about this, the filters in these seem huge flow capacity for the small 39hp size of engine we have (consumption maybe 4-6 litres per hour), whereas the FS5013 (for example) seems to copes with around 400 litres per hour. Engines mentioned here are up to 10 times the size of our little marine diesel.
Our only primary Fuel Filter at the moment is a Racor 120A (30 micron, spin on filter with glass bowl), flow rate up to 15GPH.
http://www.parker.com/parkerimages/Racor/10219%20Rev%20A%20(120A%20and%20120B%20Series).pdf
My questions are…Is there any downside to using over-sized filters like the FS1000 and FS19513 other than cost & size ? Is it OK to leave the filter on for several years at a time if it’s not clogging ? Alternatively, what heads/filters do you guys recommend as a multi-stage filtration system for small-diesel boat owners. Is there something like the #1 KIT https://www.sbmar.com/product/1-multi-stage-fuel-kit-fs1000-fs19513/ but with smaller filters ?
Also, any thoughts on plumbing a secondary parallel set of filters with a quick-changeover switch, perhaps plumbed so that it could do “normal” duty as a fuel-polishing setup ?
Many thank,
Aidan.
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