This question came up in another thread. I've always done it one way and somebody told me I was doing it wrong. Pretend I'm from Missouri and show me.
later, dozer
later, dozer
Fuel Filter, before or after mechanical pump?
dozerhand
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Where do you want it to be? I've run 3 cars with them right off the tank. Factory has a small one after the pump and the tank strainer.
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I run both on my cars one pre-pump and one post pump should change your poll to include this option. on all my cars I run a higher flow pre pump filter and I run a finer pre carb or inline pre injector filter. this way it protects the pump and the carb.
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8,349 Posts
I just use one before the pump. A summit highflow.
1968 Malibu Sport Coupe, 489c.i. 590hp 600tq, TCI 200r4 Freakshow 3,600 stall, 3.73 12 bolt posi
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15,653 Posts
I have a Jeggs alum filter after the pump, 8 an fittings and braided SS lines to reg. mounted at carb., before engine swap I had the filter before pump and will prob. put another filter there and leave the one after, can 2 filters cause flow restrictions??
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I don't mind a filter after the pump if it is hard plumbed in. Nice thing about a filter before the pump is it is not under pressure and it picks up stuff before going into the pump. What I don't like is rubber hoses and a bunch of clamps after the pump under pressure. It is not as safe and it doesn't look good. Personal choice. I have seen many problems with the rubber hose and clamps after the pump.
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226 Posts
Yeah well, I'm going back to hard line all the way to the carb and bronze internal filters like I planned originally. But seriously, I've been doing it that way for 50 years without a problem.
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After the pump
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12,324 Posts
I remove the sock strainer out of the tank and put a filter on the tank outlet. That way if I ever have a problem, dropping the tank is not even a thought for a clogged sock.
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4,357 Posts
Can't speak for the mechanical layout in an electric fuel pump, but I do a bit of aquarium work and their rule is to never have any more restrictions in front of the pump than are necessary but as many as you want after. Pumps don't work as well with input restrictions but fine with outlet restrictions.
FWIW
FWIW
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18,738 Posts
The oem way, with filter after the pump, coarse screen before.
And BTW, I've run a steel inline filter for twenty years w/o issue, whoever said the two 2" pieces of rubber on each side of the inline are "trouble". Oh sure I;d hardline it if I could find filters with compression ends cheap enough.
And BTW, I've run a steel inline filter for twenty years w/o issue, whoever said the two 2" pieces of rubber on each side of the inline are "trouble". Oh sure I;d hardline it if I could find filters with compression ends cheap enough.
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439 Posts
I run both, high flow right before the pump along with the one in the quadrajet.
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