Dual Racor fuel filters for 900 Mans

Hey Skip
Was wondering what level of filtering you use on da mud filters. On the newer SeaRays with the Mans and dual Racors, I push for dual 10mic, 1000s.
It's taken a few years of use but were using dual 10s on our ol Bertram now also.
I'm a big believer in vacuum gages also.

A pet-cock on the bottom of the filters with a hose or tube attached really makes life neater. Easy to drain down the Racor before changing elements.

I have the dual 1000 Racors, then the original Detroit primary sock in a can or paper element filter, then the original Detroit spin-on secondary.
I used the 30mics for years. Rigged up a polishing pump with a 12 hour timer that polished the fuel thru the 30s.
A couple of years ago the 30s stayed clean but I started showing vacuum on the sock filter before the fuel pump. Went thru a few of those old filters, then started thinking about filtering more at the mud filters.
20 mic are not available so went to the 10s.
Life has been good since. I run with both 10s open, then the sock filter, then the spin-on. High flow, low vacuum all the way up.

On the mans, I try to pass the same idea, 10s in the Racors, Factory spin-on filter with it's bowl, then the twin secondary elements. That Man primary is expensive so if the tanks are clean, save them and eat the 2020s if any trash is picked up.

Of course, any good boy scout carries plenty of filters on board and knows how to quick service the filters when needed.

I ml not a big fan of running dual racors with the valve set to both. If you suddenly get a batch of contaminated fuel you re going to clog both filters and end up dead in the water whereas if you are running just one, you will be able to switch on the fly and hopefully have time to come in or anchor out.

I run 30microns racors on 3412Es and gensets one at a time and change them at every main oil change. I change th used one and switch to the one changed at the previous change.

I change secondaries at every oil change too... Not sure how expensive MANs filters can be but if you're going to burn a few thousand gallons of diesel in 100hours, I don't see a few $ worth of secondaries to be worth saving.

Skip, That $400 for all filters and labor, rite?

If i m not mistaken, I paid $300 to $350 or so at the cat dealer for a full set of oil (2 per engines) and secondaries ( also 2 per engines) filters for the 1400hp 3412Es

$400 for fuel alone is ridiculous.

I had to look the filters up.
51.12503.0052 list $73.65 2 required
51.12503-0061 list $46.62 4 required
2020-TM-OR list $19.99 4 may be required

So, With a little foot-in mouth, Over $400 in filters (list price) is rite.
Sorry Skip

Now, Shopping on the web, all can be had less than half price.

I use the Donaldson filters on my Detroits. About half the price and in spec. Even cheaper when I can take my time and shop the web.
Still use the Racor mud filters.

If you shop and stock, you can save a lot.
I shop and sell also.

,rc

How many gallons do they use. At $40 a gal I hope they don't use 20usg each like the 3412s...