We own a 1983 26’ Nonsuch Classic that’s equipped with the original Racor Diesel Fuel/Water separator. The filter element needs to be replaced but I’m having no luck locating the part number. Can anyone provide a part number? The filter element has brown plastic end caps, with one end that is press-fitted into a tube that belongs to the top portion of the bowl assembly.
Also, I believe the brown end caps signifies a 10 micron filtration capability…is this correct?
Jack Dokter
Nine Lives 1983 26C W21 #099
Penetanguishene, Ont
I think I have the same fuel filter. I recently replaced the filter and it had tan end caps. The filter I replaced was a 2 micron filter. The mechanic working with me said that was improper and replaced it with 30 micron. The number is usually printed pretty clearly.
I have the same Racor unit and it is, indeed, a 2 micron filter with brown ends. I think that the part number R24S sounds familiar. I would advise against a 30 micron filter because it would allow too much trash into the system.
Joe Valinoti
S/V IL Gatto NS30U #221 (1984)
Sea Harbour Yacht Club
Oriental, NC
Generally, the Racor filters are primary filters with the secondary filter being on the engine itself. It’s usual to have a larger micron element on the Racor and the 2 micron element on the engine filter. The theory is that you don’t want to reduce fuel flow by having too small of a filter on the primary. It depends on the fuel flow requirement of the engine but it’s typical to see a 10 micron primary and a 2 micron secondary. Best idea is to check the engine specs and recommendations.
Joe, thank you for anticipating my question about the proper size for the filter. I thought it odd that the PO had left me with a few 2 micron filters but the mechanic switched it out for a 30 micron.
That’s probably why my secondary never has any dirt in it. I felt the same way when I first started doing maintenance on my W27. However, the 2 micron filter appears to be working well. I do change it about 3 times a year, however, .
Joe Valinoti
S/V IL Gatto NS30U #221 (1984)
Sea Harbour Yacht Club
Oriental, NC
I was advised by an experienced diesel mechanic to use 10 micron in my Racor and a friend also heard from a Westerbeke representative in a seminar at the Boston INA rendezvous to use 10 micron as well… for the very reason you point out Gary. J