Hot Rod Forum : Hotrodders Bulletin Board - Reply to Topic -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine> Discharge fuel filter?
User Name
lost password?   |   register now

Thread: Discharge fuel filter? Reply to Thread
Send Trackbacks to (Separate multiple URLs with spaces) :

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Additional Options
Miscellaneous Options

Topic Review (Newest First)
12-28-2010 02:32 PM
matt167 from the factory, some didn't even have filters, and just had the sock in the tank..most vane and rotor electric fuel pumps require filters before the pump... factory didn't do it because the sock was there
12-28-2010 12:03 AM
kc8oye yeah.. that's why my 1972 Monte carlo had a fuel sock in the tank, and a filter _AFTER_ the pump. (from the factory)

if it was such a great idea to put it before, don't you think they would have?

it's much much harder to 'suck' then it is to 'blow' think about how little airflow you feel in front of the radiator fan, vs behind it..
12-27-2010 11:10 AM
airboat Yeah the in-tanks have a pretty effective sock. Most after-market fuel pump manufacturers will recommend a filter on the inlet side of the pump. The one Bondo posted a pic. of is inexpensive, convenient and large enough to do a great job. really need it especially with a vane type pump.
12-27-2010 11:03 AM
matts37chev and those in-tank fuel pumps have a screen/filter mounted on the pump itself as part of the inlet to the pump (before)
12-27-2010 10:55 AM
DanielC You have to realize that everything that is a on a car goes through a cost analysis.
If you can save even a penny in the cost of a part, used in making a car, you multiply that penny by the number of cars made using that part, and the auto company saves thousands of dollars.

Fuel filters are after the pump on modern cars for one reason. The fuel pump is in the gas tank.
12-27-2010 10:37 AM
kc8oye if it was such a great idea, why is it that they aren't used in production? the filter is always on the pressure side. Even back in the carb'd days, the filters were AFTER the pump.
12-26-2010 10:59 AM
bondo Ayuh,... This is what We use on boats, 'n it's ALWAYS before the fuelpump...

12-26-2010 09:16 AM
302 Z28 A filter on the suction side of the pump is always a good idea. You must however use the correct filter. Not a pleated paper filter that can collapse. Use a sintered bronze filter or a filter with a fine metal screen that can be taken apart and cleaned if needed.

12-25-2010 10:54 PM
kc8oye i've always understood it that you never want filters on the suction side of the fuel pump, the suction can collapse the filter media and cause starvation problems. always filter on the pressure side.

I had a filter on the suction side by the tank and it was causing me all kinds of headaches that went away after I got rid of it, and moved to a filter just infront of my regulator.

This pic here isn't the greatest pic for this, but you can see my regulator and filter setup, all mounted by the carb on the passenger side.
12-25-2010 04:29 PM
bondo Ayuh,... You want the filter Before the pump, to Save the pump for any Crap...
The check-valves in the pump are as touchy as any carb about Crud...
12-25-2010 03:45 PM
DanielC General rule of thumb is you want as few connections on the pressure side of the fuel pump as is possible.
12-25-2010 02:41 PM
Discharge fuel filter?

Can I mount a traditional (usual suction) fuel filter on the discharge side of the mechanical fuel pump on a SBC, to filter the gas before it enters the carb? I didn't know if they would break down and cause more problems or what type of filter do I need, right now I have a 3/8" hose barb on the pump leading into a 3/8 line going to the regulator. It's a low pressure Edelbrock pump. Thank you

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -6. The time now is 02:56 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.