Fuel filter(s) and carb

[Shimmy]

I'm redoing the fuel line from the tank to the pump since I just installed a Duff gas tank. I already have a 40micron filter located just before the carb. I picked up another fuel filter thats 100 micron that i was gonna put in just past the pick up before going into the hardline along the frame. I've read more is not better, but can't help think that i need this.

the bronco previously only had one filter located near the carb, nothing at the OE tank and of course the tank sock was non existent and there was a ton of debri in the tank.

should i run this extra 100 micron filter or just call it good with one 40micron filter?

 

[ntsqd]

Do you have a sock on the pick-up now? If so, I'd leave the 100 micron out of the system. If you don't have the sock and/or can't fit one, then I'd use the 100 if you're running an electric pump. I'm not so sure that it's needed with a mech. pump.

Scope creep, but I'm to the point where I don't want a mechanical pump. I prefer an in-tank electric pump. Even for a carb. I'd set it up with a by-passing regulator in the engine bay and add a return line to the tank. this stuff they sell called "gasoline" these days really isn't made to work well with a carb. My '73 SBSS has to crank a LOT every morning to get enough fuel into the carb for it to start. If it weren't shortly going to get a TBI 350 I would be taking my own advice.

 

[Shimmy]

Do you have a sock on the pick-up now? If so, I'd leave the 100 micron out of the system. If you don't have the sock and/or can't fit one, then I'd use the 100 if you're running an electric pump. I'm not so sure that it's needed with a mech. pump.

Scope creep, but I'm to the point where I don't want a mechanical pump. I prefer an in-tank electric pump. Even for a carb. I'd set it up with a by-passing regulator in the engine bay and add a return line to the tank. this stuff they sell called "gasoline" these days really isn't made to work well with a carb. My '73 SBSS has to crank a LOT every morning to get enough fuel into the carb for it to start. If it weren't shortly going to get a TBI 350 I would be taking my own advice.

no sock on the pick up. i had thought of doing the electric pump but sticking with the mechanical one for now. probably do the carter pump later?

 

[serial car restorer]

I should wrap up my fuel delivery system in the next few days. All new parts (both tanks, senders, hard & soft lines, selector valve). I thought about an extra filter (has a second one before the pump now), but since everything is new, and both new senders have new socks, I'm going to just use the carb-mount one. I figure that should be enough.

 

[DC_Gearhead]

I have the setup you are talking about as do a lot of muscle car folks. It’s pretty standard to have a 100 in the fuel line and a 40 at the carb. I did that and put in a little Holley electric pump between the filter and my mechanical fuel pump. I did it to stop vapor lock and keep my fuel bowls full at start. My 40 filter is between my mechanical filter and pressure regulator.

Works great.


Sent from my iPhone using Tapatalk

 

[Shimmy]

I have the setup you are talking about as do a lot of muscle car folks. It’s pretty standard to have a 100 in the fuel line and a 40 at the carb. I did that and put in a little Holley electric pump between the filter and my mechanical fuel pump. I did it to stop vapor lock and keep my fuel bowls full at start. My 40 filter is between my mechanical filter and pressure regulator.

Works great.


Sent from my iPhone using Tapatalk

did you need the electric holley pump or just did it for assurance?

 

[Broncobowsher]

A stock fuel sock is the 100 filter before the pump. Either a sock, or the coarse filter before the pump. But they are not the same. This is a sales pitch for Aeromotive, but the general tech goes across all brands. https://cdn.shopify.com/s/files/1/0...filter_to_protect_your_pump..pdf?v=1702570237

 

[DC_Gearhead]

did you need the electric holley pump or just did it for assurance?

I have an old mustang that I used to get vapor lock and get stranded, so it was just assurance and two other bonus reasons. I hate a gummed up carb from old gas, so I put in a fuel pressure regulator with return. When I turn the key on it basically cycles all of the fuel through the filters and back to the tank. And I added a valve so I can drain the fuel tank if the gas has been sitting over winter or a few months.

Basically I got bored and over did it, but since then it’s had no issues and I haven’t had to tinker with the carb periodically. Funny how consistent clean fuel makes an engine be more dependable. Who knew? Haha.


Sent from my iPhone using Tapatalk