Which fuel filter?

I've been using the Fram HPG-1 filter for a long time on the suction side of a Mallory Comp 250 fuel pump, is the filter a restriction? Also, what do you folks recommend if I replace it?

YES it is. No filter at all is what I recomend. Just a strainer built into the fuel tank outlet fitting. Filters should always be on the outlet side of the pump. If you do insist on a filter on the inlet side, then it should be at least 100 micron, which the fram unit is around 10 microns. . Try it youre see.

Yes
Those Fram filters suck.
Jegs carries the best cartridge/canister fuel filter out there. Its made by Perma-Cool.
The Fram filters are rated at 90 gallons/per hour. The Perma cool is rated at 25 gallons per minute...So after 4 minutes the Perma cool kicks its tail.

Guess what? Its the same price as the Fram new...It also has fuel/water separator, and the ability to plumb two outlets and two inlets...
Lookie..
http://www.jegs.com/i/Perma-Cool/771/81794/10002/-1

But Earls carries a inline fuel filter with NPT threads, or an ends, -6...-8 what ever you want..It has stainless mesh filter that cleans right up..I dont even take it apart...I just take a air hose compressed air nozzle and back flush it through the outlet side....
Its also about $40...

I want to use one of the billet screw-together kind on
mine with the stainless screen on the inlet side. I'm just
concerned with stopping pieces of foam from the fuel cell
from getting in my Mallory 140 pump.

10 micron has bigger holes than 100 micron, correct?

10 is smaller than 100

The Comp 250 is a gear rotor style pump with close tolerances, therefore it needs something to keep debris like fuel cell foam out of it. No filter would seriously worry me!!

I hate being wrong. I was thinking holes per square cm, mm or something.

Thank you.

All fuel pumps need some kind of pre-filter or screen to keep crud out of them. Even the factory mechanical pumps had a "sock" in the gas tank.

However, the filter on the suction side needs to be freer flowing than the one on the pressure side. This means making the filter either larger or with a higher micron rating or both.

Mallory pumps are gerotor style so require a 40 micron prefilter (rather than the typical 100 micron).

I would recommend PN 1029 shown here:

http://www.robbmcperformance.com/products/filters.html

Made in the USA, affordable, cleanable, compact and a large enough filtering area to work with a 250 pump.

Quote:

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I would recommend PN 1029 shown here:

http://www.robbmcperformance.com/products/filters.html

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And that's exactly what I bought to use in front of my Mallory 140 pump.