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Old 06-06-2017, 09:26 AM   #1
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City: Sitka
Vessel Model: Transpacific Marine Eagle 32
Join Date: Dec 2014
Posts: 519
Baldwin fuel micron ratings

The following Baldwin filters appear to fit the adaptor base for the Ford Lehman 120 and SP 135.

Micron ratings as per Baldwin:
BF790-5 nominal, 20 absolute; 83.76% avg. efficiency
BF788-4 nominal, 15 absolute; 83.76% avg. efficiency
BF988-4 nominal, 20 absolute; 86.34% avg. efficiency
BF900-4 nominal, 15 absolute; 83.76% avg. efficiency
BF980-4 nominal, 15 absolute; 83.76% avg. efficiency
BF7664-4 nominal, 15 absolute; 83.59 avg. efficiency

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Old 06-08-2017, 05:35 AM   #2
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Join Date: Oct 2007
Posts: 21,928
ALL filters have a similar spread as shown, with 16% or so of various sizes getting by to be caught usually by the on engine filter.

Using a really fine filter like a 2 will keep the on engine filter cleaner longer.

Frequently the filter bank is easier (and cheaper) to change than the on engine filter, and can be located out of the hell hole , the on engine filter cant be easily remote mounted. .
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