29
Aug
Most diesel engines can run on a 10 micron fuel filter. I use 10 micron filter canister before the pump i always wanted to protect my pump so put mine before my thinking was everything after the filter is protected.
If however Filter B was used on engine oil it may be too be up to 10 microns in size.
What micron fuel filter to use. The short answer is almost always use a 10 or a 30 micron fuel filter for marine diesel engines. Most diesel engines can run on a 10 micron fuel filter. But many can not run on a 30 micron fuel filter.
These are the two most common micron filter sizes used a 10 micron and a. For a diesel you should really use a 1-2 micron filter but for fuel you dont need that fine. Carbs do fine w 60-100 FI is recommended with 10 but the range is something like 10-40 if Im not mistaken.
If you are afraid youll ruinclog the injectors use a 10 micron or finer. You probably wont be able to get a very fine steel filter. A finer micron filter can collect more contamination from the fuel and reach its dirt holding capacity more quickly.
It may need replacing more ofeten than a larger micron filter. A good filter is low cost protection for expensive engine components. Fluid in 100 particles 5 microns upstream of filter 1 particle 5 microns downstream of filter Filter A 99 5 micron Fluid in.
Fuel system pre-filter before the pump. 25 to 400 micron. This filter needs to protect the pump from damage.
Fuel system final filter after the pump. 1 to 40 micron. High-performance fuel injector manufacturers recommend a 10 micron or finer filter.
High pressure EFI applications require a 10-micron cellulose filter to prevent debris from clogging fuel injectors. Pre-filters for EFI pumps use a stainless mesh 100 micron filter. However if your plans call for running E85 or methanol fuel make sure to always use stainless steel mesh fuel filters.
For example a micron rating of 10 will filter out particles 10 microns and larger while a micron level of 2 will filter out particles that are 2 microns or larger. One downside to the smaller micron rating is filtered will catch more particles and the lifespan of the filter will be shorter. Check to see what appropriate micron rating is recommended for the equipment you will be using.
When should you chance a Fuel Filter. I have Racor 900MA turbine primary filters. I currently use 2 micron elements and have a pressure drop of 2-3 in Hg across the Racors at Wide open throttle.
My mechanic says that I should only be using 10 or even 30 micron filters in the Racors and that by using the 2 micron ones I am damaging my engine fuel lift pump and perhaps the injector pump. Regarding filters for a carbureted application a 100-micron inlet filter is still a good idea while the pressure side filter does not have to be quite so fine so a 40 micron filter with a large surface area would be the best. Because of these lower pressures these inline filters can be slightly smaller with no fear of flow restrictions.
When choosing a filter for use after the pump and before the engine use an Aeromotive 10-micron part numbers 12301 and 12310 40-micron part number 12335 or an acceptable equivalent. These filters are for use on the fuel pump outlet side only. Most injector manufacturers prefer very fine filtration so the 40-micron filter should not even be a consideration if youre using an EFI setup.
Usually a carburetor does not require as fine of a filter as EFI. The 40-micron filter element is usually OK for a carburetor customer but I usually dont suggest it. Filter A and Filter C would let too much damaging contaminant pass and shorten engine life.
If however Filter B was used on engine oil it may be too be up to 10 microns in size. Filter C might be the best for this application. The technician said that the fuel from the fuel dock is filtered with 30 micron filters when it is run into my tanks.
My primary Racor R120P fuel filter is 30 microns and my secondary fuel filter on the engine is a Fleetguard FF5285 10 micron filter. Todays OEM Engine Manufactures recommend using a 2 to 10-micron filter to help protect direct injection applications as well as keep the fuel system cleaner due to ULSD quality fuels. The significant difference of 10 microns and 45 microns caused a disparity between the test and real world operations.
Further the company says a 30-micron filter should be used as a primary to filter raw or poor-quality fuel before it is further filtered by finer media such as a 10- or 2-micron. Racor says a 10-micron can be used as a primary filter for fuel that is known to be of good quality. I currently use 2 micron elements and have a pressure drop of 23 inches of mercury a standard vacuum unit of measure across the Racors at wide open throttle.
My mechanic says that I should only be using 10- or even 30-micron filters in the Racors and that by using the 2 micron ones I am damaging my engine fuel lift pump and perhaps the injector pump. I use 10 micron filter canister before the pump i always wanted to protect my pump so put mine before my thinking was everything after the filter is protected. Barry Grant even sells fuel filters that filter down to 8 microns.
70 Camaro Z-28 461cuin. OD auto and 331-12bolt gloss black white stripes. Some vehicle manufacturers state that for the warranty to be valid a certain micron of fuel filtration is required.
The choice of fuel tank filter also depends upon the flow rate. In order for the filter to work its flow rate must be compatible with the flow rate of the refuelling system it is being added to. For example if you have a 56lpm fuel transfer pump the fuel filter needs to.
Aeromotive recommends the use of 10-micron cellulose filter PNs 12301 and 12310 for gasoline 10-micron micro-glass PNs 12340 and 12341 for ethanol and methanol or 40-micron stainless filter PNs 12335 and 12343 for use with any type of fuel and most carbureted and mechanical fuel injection applications. I use the white 75 micron pancake filters for gravity systems. And the 40 micron or finer paper filters for pump systems.
With the new EPA operate under vacuum fuel systems a too fine of filter much below about 75 micron can cause fuel flow issues when the tank gets low on gravity systems. When used for a fuel filter micron rating indicates the filters ability to capture contaminants of a specific size. A micron rating of 10 microns means the filter removes particles that are 10 microns and above while a 5 micron rating shows a filter capable of trapping impurities of size 5 microns or larger.
Fuel filters are rated in microns. A micron is a unit of measurement equivalent to 000039 inches. 39 Millionths of an inch The symbol for micron is ยต though you dont see it too often in fuel filter ads.
To put this into perspective a human hair is about 100 microns in diameter. Anything less than about 30-40 microns. Filter material is measured in microns.
Filters with a larger micron rating allow larger particles through the system. Usually a 10-micron filter is used for unleaded gasoline and a 30-micron filter is used for diesel fuel. A 30-micron filter used in an unleaded dispenser unit can allow unwanted particles to pass through to the customers.
PetroClear helps ease the challenges inherent in protecting your fuel dispensers from harmful particulates by manufacturing a line of 10- and 30-micron petroleum-dispensing filters that are approved for use with various types of fuel including 100 gasoline ethanol blended fuels diesel biodiesel etc. PetroClear filters deliver micron ratings that help prevent damage to vehicle engines giving both the fuel.