Motorcraft FL-1hp pressure drop

[madmaxx]

Excellent question. The best I can find on the FL-1Hp and not from the Ford site is 28 microns which is higher than the 20 microns on the 1a. I surfed every ford website and never once did they specify a micron rating on the HP. All these companies supply half ass information. Looks like more pressure testing this weekend. I am going to swap out the FL-1hp and try the 1A, see what happens with the differentail pressure. I can digest 27 micron, but if it is in the 50's which I doubt we will ever know it is another useless filter.

I found another site which specified 97% efficiency for the 1HP but as the dumb fuks at royal purple did, the dumb fuks at ford racing did not specify a micron rating for the 1 hp. (royal purple is 97% at 20 micron, 99% at 25 micron)

Originally Posted by Bob In Ct

Typically racing filters have a much higher micron rating. They provide more flow at the expense of less filtering. Currently I'm using a Moroso racing filter with a micron rating of 27. The Motorcraft FL-1A is probably about 11. I thought the HP was in the 50s.

Bob