Fuel Filter Recommendations

67ss · 05-27-2009, 10:06 AM

I just went through this. Replaced my blue holley pump with a black holley. Had a Mallory filter with paper element before pump but was told by holley that you should never use a paper element before the pump even though Mallory and BG use paper before their pumps. Who knows. Holley recommends a screen type filter before the pump to make sure you don't get any cavitating of fule at the pump. At any rate I really didn't have room for the paper element filter without running the line up hill which I was trying to fix. I ended up getting an Earl's in line filter with a stainless steel mesh screen (85 microns). Was able to easily plumb it inline with my -8 line before the pump. I screen my fuel when I put it in the cell as well, so I didn't really see any point of running any other tighter mesh filter after the pump.

sst1226 · 05-27-2009, 10:40 AM

The info I could find on my filter is that the element is a 10 micron filter which If I'm not mistaken means that it can filter very fine particles so it should probably go after the pump. My initial concern is that the fuel pump would just push any particles right through the filter if I mounted it after the pump, but I assume that a 10 micron filter wouldn't allow that.

I too use a funnel with a tight metal mesh screen when I fill the fuel cell up to catch anything particles from the gas can.

According to Holley's website, they reccomend the use of a coarse screen type filter before the pump, which I'm assuming is one rated with a higher micron number and a high-quality pump after the filter which I'm assuming would be rated at a lower micron number to filter out fine particles like a 10 micron?

67ss · 05-27-2009, 10:52 AM

Correct. You want a course screen type before the pump (I think they recommend 100 microns) then the tighter filter after the pump if anything at all.

That Earl's is part number 230208 . $46 from Summit.

sst1226 · 05-27-2009, 11:08 AM

Thanks for the help!

Jack McCarthy · 05-28-2009, 09:34 AM

aeromotive says thier pump would rather pump some dirt than run partially dry, so they insist the filter be on the motor side of the pump... i also run another one 3 inches from carb

jack

05-27-2009, 10:06 AM	#1
67ss Junior Member Join Date: Jan 2008 Posts: 29 Likes: 0 Liked 0 Times in 0 Posts	Re: Fuel Filter Recommendations I just went through this. Replaced my blue holley pump with a black holley. Had a Mallory filter with paper element before pump but was told by holley that you should never use a paper element before the pump even though Mallory and BG use paper before their pumps. Who knows. Holley recommends a screen type filter before the pump to make sure you don't get any cavitating of fule at the pump. At any rate I really didn't have room for the paper element filter without running the line up hill which I was trying to fix. I ended up getting an Earl's in line filter with a stainless steel mesh screen (85 microns). Was able to easily plumb it inline with my -8 line before the pump. I screen my fuel when I put it in the cell as well, so I didn't really see any point of running any other tighter mesh filter after the pump. __________________ Chad Harris 67 Chevelle SS http://mysite.verizon.net/harrisracing

05-27-2009, 10:40 AM	#2
sst1226 Junior Member Join Date: Jun 2005 Location: Newark, DE Posts: 63 Likes: 2 Liked 11 Times in 2 Posts	Re: Fuel Filter Recommendations The info I could find on my filter is that the element is a 10 micron filter which If I'm not mistaken means that it can filter very fine particles so it should probably go after the pump. My initial concern is that the fuel pump would just push any particles right through the filter if I mounted it after the pump, but I assume that a 10 micron filter wouldn't allow that. I too use a funnel with a tight metal mesh screen when I fill the fuel cell up to catch anything particles from the gas can. According to Holley's website, they reccomend the use of a coarse screen type filter before the pump, which I'm assuming is one rated with a higher micron number and a high-quality pump after the filter which I'm assuming would be rated at a lower micron number to filter out fine particles like a 10 micron? __________________ Mario DiTeodoro III SST/SG1226 STK126M

05-27-2009, 10:52 AM	#3
67ss Junior Member Join Date: Jan 2008 Posts: 29 Likes: 0 Liked 0 Times in 0 Posts	Re: Fuel Filter Recommendations Correct. You want a course screen type before the pump (I think they recommend 100 microns) then the tighter filter after the pump if anything at all. That Earl's is part number 230208 . $46 from Summit. __________________ Chad Harris 67 Chevelle SS http://mysite.verizon.net/harrisracing

05-27-2009, 11:08 AM	#4
sst1226 Junior Member Join Date: Jun 2005 Location: Newark, DE Posts: 63 Likes: 2 Liked 11 Times in 2 Posts	Re: Fuel Filter Recommendations Thanks for the help! __________________ Mario DiTeodoro III SST/SG1226 STK126M

05-28-2009, 09:34 AM	#5
Jack McCarthy VIP Member Join Date: Feb 2002 Location: lyndon ky. ... louisville area Posts: 1,322 Likes: 29 Liked 477 Times in 117 Posts	Re: Fuel Filter Recommendations aeromotive says thier pump would rather pump some dirt than run partially dry, so they insist the filter be on the motor side of the pump... i also run another one 3 inches from carb jack __________________ Jack McCarthy 3609 STK "the Captain"

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode