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Old 08-28-2016, 03:03 PM   #29
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1982 28' Airstream 280
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Mike the secondary filter which is the one on the top front of the engine is kind of limited in what is available. If you do an interchange search with the factory number you get the factory spec which I believe is the 3260 which is 10 micron.

The Racor is an accessory unit sold big time in the marine industry. It is a primary filter to keep the trash and water from reaching the secondary filter and the injector pump. It is a relatively small filter that fills up fast. Like boats chances are old moho's have nasty stuff in the tank. The more pre-filters, the more stuff removed saving the final filter.

I installed a large spin on truck filter about 3.5" x 8" where the Racor used to live. I moved the Racor on top of the frame rail where it is easy to reach. The large filter is 21 micron, the Racor is 10 micron and I haven't changed the filter on the engine in ages because it only sees clean fuel. I just find changing my pre-filters easier than dealing with the beast on the front of the engine.
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Old 08-28-2016, 03:42 PM   #30
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Thanks Dan. I get what you were saying in your first post now. Install a higher micron filter in the Racor. Ill see what I can find for my next filter change. Wont hurt anything to run the 14 micron, it will just clog quicker. I carry a spare too.
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Old 08-28-2016, 04:22 PM   #31
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When I first got my coach I could only get 700 or 800 miles on a filter. The PO left several spares and after the third change I started checking part numbers, they were 2 micron filters. They were not Racor brand so I had to chase down the numbers. I had clean fuel but what a pain.
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Old 08-28-2016, 04:39 PM   #32
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Hahahaha, no fun but at least it was an easy fix once you sorted it out.
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Old 09-01-2016, 08:57 AM   #33
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1979 28' Airstream Excella 28
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Mayco and Smartstream.

thanks for the info on what radiators and filters are what.

I can get around a small Japanese engine, but this all new to me.

at least there is (usually) more room to work!
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