micron filters
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Staging Lane
Joined: Aug 2020
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TECH Fanatic
Joined: Jun 2003
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When you ask external - assume you are asking post pump (outside the tank inline between the gas tank and fuel rails) ?
10 micron is the recommended size for an external fuel filter (post pump).
But when spec'ing the fuel filter make sure to spec the GPH, fuel pressure drop, as well as micron size.
The inlet and outlet size of the filter is important too. For example if you have an -8an feed line IMO you want at least an -8an inlet and outlet. Racetronix supplies an external fuel filter with -10an inlet and outlet with their -8 fuel line kit. It's huge in order to handle the volume and pressure of dual pumps such as dual 450's. You don't want to bottle neck fuel flow at the filter or have a pressure drop (read the second review in link below).
Liters to gallons conversion. One liter = 0.264172 gallons.
Two 450 lph = 900 lph (900 lph / .0.264172) = 340 GPH)
This filter for example doesn't mention GPH but claims it supports over 1000 rwhp.
https://www.summitracing.com/parts/aei-12375
https://www.streetmusclemag.com/tech-stories/filtering-the-facts-how-to-avoid-major-fuel-filter-mistakes/
Do a search (forcfed fuel filters or stevieturbo). A spin on is another option for big HP. There's an ideal location for a spin on FF where the existing stock filter is located on the fbody.
I suppose one can argue that the lower the micron size (100 > 10 micron) the more likely the filter to contaminate and reduce fuel flow. So regular FF maintenance is critical when making big HP
10 micron is the recommended size for an external fuel filter (post pump).
But when spec'ing the fuel filter make sure to spec the GPH, fuel pressure drop, as well as micron size.
The inlet and outlet size of the filter is important too. For example if you have an -8an feed line IMO you want at least an -8an inlet and outlet. Racetronix supplies an external fuel filter with -10an inlet and outlet with their -8 fuel line kit. It's huge in order to handle the volume and pressure of dual pumps such as dual 450's. You don't want to bottle neck fuel flow at the filter or have a pressure drop (read the second review in link below).
Liters to gallons conversion. One liter = 0.264172 gallons.
Two 450 lph = 900 lph (900 lph / .0.264172) = 340 GPH)
This filter for example doesn't mention GPH but claims it supports over 1000 rwhp.
https://www.summitracing.com/parts/aei-12375
https://www.streetmusclemag.com/tech-stories/filtering-the-facts-how-to-avoid-major-fuel-filter-mistakes/
Do a search (forcfed fuel filters or stevieturbo). A spin on is another option for big HP. There's an ideal location for a spin on FF where the existing stock filter is located on the fbody.
I suppose one can argue that the lower the micron size (100 > 10 micron) the more likely the filter to contaminate and reduce fuel flow. So regular FF maintenance is critical when making big HP
