Is there a database anywhere that shows the micron ratings of various fuel filters? I found data on oil filters, but apparently no one has done much to measure fuel filters efficiency.
My 4BT just has one fuel small spin-on fuel filter under the intake on the rear of the head (Napa 3472 or Wix 33472), but the industrial Cummins engines we have at work use an adapter in the same location with a much larger primary, and the smaller filter as the secondary. For now, I am using a simple $3 Napa 3033 metal inline fuel filter (3/8" nipples in and out) right before the mechanical lift pump to catch crud from the tank (cheap and easy to change) and the Napa 3472 spin-on.
When I got my engine, I unscrewed the old fuel filter and it was full of rust when I drained it. I figured it caught the crud like it should, but when I changed the governor spring, the entire insides of the VE pump were coated with a very fine layer of red rust dust. I want to do what I can to keep my pump alive.
I was reading on the 'net that the Perma-Cool fuel filter is 2 micron. I haven't verified if it is that good. The Goldenrod brand of bulk-tank fuel filters (like at TSC) are supposedly 10 micron. I am wondering what the Napa 3472 filter will filter down to.
My 4BT just has one fuel small spin-on fuel filter under the intake on the rear of the head (Napa 3472 or Wix 33472), but the industrial Cummins engines we have at work use an adapter in the same location with a much larger primary, and the smaller filter as the secondary. For now, I am using a simple $3 Napa 3033 metal inline fuel filter (3/8" nipples in and out) right before the mechanical lift pump to catch crud from the tank (cheap and easy to change) and the Napa 3472 spin-on.
When I got my engine, I unscrewed the old fuel filter and it was full of rust when I drained it. I figured it caught the crud like it should, but when I changed the governor spring, the entire insides of the VE pump were coated with a very fine layer of red rust dust. I want to do what I can to keep my pump alive.
I was reading on the 'net that the Perma-Cool fuel filter is 2 micron. I haven't verified if it is that good. The Goldenrod brand of bulk-tank fuel filters (like at TSC) are supposedly 10 micron. I am wondering what the Napa 3472 filter will filter down to.