Register or Log In To remove these advertisements. |
|
|
|
Thread Tools | Display Modes |
|
07-10-2013, 09:50 PM | #1 |
Registered User
Join Date: Jan 2008
Location: HOUSTON TX
Posts: 1,161
|
Fuel filter location with External pump
Hello guys and gals, Plumbing my fuel system with an External pump and wanted to know if I should put the filter before or after the fuel pump. It is a return style fuel system without the corvette style regulator. Thanks Daniel.
|
07-10-2013, 11:45 PM | #2 |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
|
Re: Fuel filter location with External pump
Ideally you want one before and one after, but a lot of people don't run the pre-filter. You want about a 100 micron pre-filter before the pump and a regular high pressure filter after the pump. I have omitted the pre-filter in the past, but on the trucks I know I am going to be driving a lot, it's cheap insurance, since a small amount of crud can quickly ruin a fuel pump.
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
07-11-2013, 12:07 AM | #3 |
Registered User
Join Date: Jan 2008
Location: HOUSTON TX
Posts: 1,161
|
Re: Fuel filter location with External pump
I have currently a 40 micron filter after the pump planned, I am using all AN -6 fittings in my fuel system. I can see if they make a 100 micron filter with AN fittings, thanks Daniel.
|
07-11-2013, 01:06 AM | #4 |
meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
|
Re: Fuel filter location with External pump
I don't bother with a pre filter, just because it can be annoying finding reasonably priced fuel filters in a variety of micron sizes, AN sizes, AND FI pressure rated.
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
|
07-11-2013, 01:29 AM | #5 |
Registered User
Join Date: Aug 2007
Location: Corona, California
Posts: 7,998
|
Re: Fuel filter location with External pump
This is what I'm using for my pre-filter. You can get adapters for for the AN -6 lines.
Kim http://www.summitracing.com/parts/sum-230118/overview/ |
07-11-2013, 12:28 PM | #6 |
Registered User
Join Date: Nov 2012
Location: West Des Moines, Iowa
Posts: 450
|
Re: Fuel filter location with External pump
I have the cheap clear plastic pre-filter on mine and the C5 filter inline is mounted on the frame about 1/2 way between the pump and engine.
Haven't had an issue yet. Definitely run a pre-filter. I found out the hard way that the inline pumps don't like junk running thru them. Cost me about $200 to fix what a $4 pre-filter could have avoided. |
07-11-2013, 07:46 PM | #7 |
meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
|
Re: Fuel filter location with External pump
I'm curious tho; are the low pressure fuel filters really ok for use as pre filters?
Sure its not on the pressure side, but wound't there still be some vacuum/suction pressure that might be a problem for a plastic filter?
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
|
07-11-2013, 09:54 PM | #8 |
Registered User
Join Date: Nov 2012
Location: West Des Moines, Iowa
Posts: 450
|
Re: Fuel filter location with External pump
I've done it on 3 swaps now and haven't had an issue. I was concerned on the first but had a bunch of gunk in the fuel system that I couldn't get rinsed out of the tank so a high $ filter wasn't really an option plus I was backed up on a show date so had to make it move...still running today about 3 years later.
It doesn't suck THAT hard...insert wife comment here.
__________________
64 Biscayne - 230/PG, Accuair E-Level, 18/20 Bonneville C's. 68 Charger R/T - #'s matching 440/auto car, 499/727/3.91. 68 GTX - 440/4-speed, Dana 60. 44,000 miles. 71 SWB C10 - LQ4+S476r 06 Duramax - LBZ - Exhaust, EFI Live, etc... |
07-11-2013, 10:58 PM | #9 |
Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
|
Re: Fuel filter location with External pump
I tried a regular filter as a pre-filter once and it was too restrictive. It was a metal one and not the clear plastic so there might be a difference there.
Here's what I'm running now. 100 micron, with cleanable element, and made in the USA! I don't think you'll find a more reasonable price on one it was $27 plus shipping. http://www.robbmcperformance.com/products/filters.html
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
07-12-2013, 10:13 PM | #10 |
Registered User
Join Date: Sep 2009
Location: ottawa,canada
Posts: 4,550
|
Re: Fuel filter location with External pump
I don't run a pre-filter either, but often thought about adding one.....my filter/reg is mounted on the outside of the frame rail under the passenger seat to keep it away from the exhaust....
__________________
my build threads '86 C10 http://67-72chevytrucks.com/vboard/s...d.php?t=415628 '67 C10 http://67-72chevytrucks.com/vboard/s...d.php?t=635078 '63 GMC http://67-72chevytrucks.com/vboard/s...d.php?t=674682 |
07-15-2013, 07:27 PM | #11 |
Registered User
Join Date: Oct 2009
Location: gilbert,AZ
Posts: 947
|
Re: Fuel filter location with External pump
Heres how I put mine together
|
07-15-2013, 10:14 PM | #12 | |
Registered User
Join Date: Nov 2012
Location: West Des Moines, Iowa
Posts: 450
|
Re: Fuel filter location with External pump
Quote:
I'm having to re-do the suction side of my fuel system anyways so I decided to give one a shot. My pump is kind of noisy, I'll report back if it quiets down at all with the new filter. |
|
07-16-2013, 11:16 AM | #13 |
Still Learning
Join Date: Jul 2009
Location: Central Oklahoma
Posts: 10,108
|
Re: Fuel filter location with External pump
I haven't added a pre filter but I am considering going back and adding the one posted by lsnova. But here is my filter/regulator location :
|
07-22-2013, 11:16 PM | #14 |
GM ONLY BABY!!!
Join Date: Oct 2003
Location: Fort Wayne, IN.
Posts: 1,998
|
Re: Fuel filter location with External pump
That's about the exact same location as mine too.
__________________
2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up |
Bookmarks |
|
|