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Fuel filter location

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The filters built into SU's are indeed very small and would be easily overcome by, say, a bad lot of fuel. I don't mean to argue with Dave Dubois but installing a filter between pump and tank vastly increases a filtration system's capacity to handle debris.
 
haasad said:
Most su pumps I've had apart already have a filter in the inlet side . It's a cylindrical very fine mesh item. .
Click to expand...

Less of a filter, and more of a screen. I believe the poster is talking about adding an additional, 'high efficiency' filter external to the pump.
 
quote_icon.png
Originally Posted by RestoreThemAll Keoke, guess where I got the idea to use a billet filter...
https://www.britishcarforum.com/bcf/s...et+fuel+filter

Keoke, This was meant as a compliment. I hope that you took it that way. I do follow your advice along with a handful of others here on this site. I do see the advantage of a clear disposable filter.
Dale
 
RestoreThemAll said:
quote_icon.png
Originally Posted by RestoreThemAll Keoke, guess where I got the idea to use a billet filter...
https://www.britishcarforum.com/bcf/s...et+fuel+filter

Keoke, This was meant as a compliment. I hope that you took it that way. I do follow your advice along with a handful of others here on this site. I do see the advantage of a clear disposable filter.
Dale
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OH No:
No offense glad to be of help at times.

Keep them compliments comin OK!.
 
Michael,

Consider Dave DuBois's opening statement "The filters that are built in them are designed to stop rocks and small birds." and the understanding he was transmitting was limited to when using an SU Pump only. He was not indicating that placing a fuel filter after the tank and before a NON-SU pump was not best for protecting the full fuel system.

Dave suggests that a separate fuel filter be placed at the output of the pump because the SU Pump:
1. Is quite tolerant of passing fuel debris without hurting the pump.
2. Will burn up if a blocked filter stops fuel flow into the pump and causes the pump not to complete its cycle.

Keep in mind that the issue is where to place a filter within the fuel system that will allow the system to be both protected and most reliable and when using an SU pump, it is after the pump. Again, Dave has limited his comments to the SU Pump and not included NON-SU pump with a different electrical structure where it is common to find a filter placed on the input side.

I hope this makes things clearer,
Ray(64BJ8P1)
 
Ray--

Dave's advice not withstanding I still feel that placing a filter between pump and tank is best.

A filter should be mounted in a place where it can be easily inspected and serviced. On a Healey once you go past the pump the fuel line is largely inaccessible until you get to the engine compartment. Mounting the filter near the engine creates a risk of fire should a break spill fuel onto the engine or exhaust.

It would take a major amount of debris to clog an inline filter such as a Baldwin BF7736 and cause a problem for the pump. The place I chose to mount this filter is at the top of the rear wheel arch. It takes but a minute to jack the rear and remove the left rear tire.
 
Griz said:
Bob, because it's a fresh restoration, and even though I had the gas tank professionally checked out and cleaned I still seem to be getting grit in the float bowls.

Dale, that sure looks like a tiny filter. Is it more like a strainer than a filter? I just got back from O'Reillys and got a metal filter (thought it would be more durable than a plastic filter if mounted in the back and exposed to rocks etc) that is about 2" in diameter and about 2" long.

Griz
Click to expand...
You can clean out the tank but you also need to clean out the fuel-lines too with compressed air.
 
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