Filter first or not?
#1685411
10/13/14 10:57 PM
10/13/14 10:57 PM
|
Joined: Jan 2003
Posts: 4,288
Danville, NH
Mopar_Mike
OP
master
|
OP
master
Joined: Jan 2003
Posts: 4,288
Danville, NH
|
When setting up an electric fuel pump do you want to have the filter after the pump or before the pump? I am assuming after but.. I have assumed before! Thanks.
RS23L7 4-Speed
|
|
|
Re: Filter first or not?
[Re: Mopar_Mike]
#1685412
10/13/14 10:58 PM
10/13/14 10:58 PM
|
Joined: Aug 2003
Posts: 4,384
Madison Wi
NTOLERANCE
master
|
master
Joined: Aug 2003
Posts: 4,384
Madison Wi
|
Mine is set up filter first.
I used to care but....... things have changed
|
|
|
Re: Filter first or not?
[Re: Cab_Burge]
#1685414
10/13/14 11:45 PM
10/13/14 11:45 PM
|
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
Too Many Posts
|
Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
|
I roasted 2 edelbrock fuel pumps with filter in front. Third time I went with new brand (Holley) and no filter other than sock in tank,, never another problem.
Plastic tank with no rust to worry about. Right or wrong, just my expierence.
**Photobucket sucks**
|
|
|
Re: Filter first or not?
[Re: 70Cuda383]
#1685417
10/14/14 02:57 PM
10/14/14 02:57 PM
|
Joined: Aug 2003
Posts: 43,317
Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,317
Bend,OR USA
|
Quote:
I roasted 2 edelbrock fuel pumps with filter in front. Third time I went with new brand (Holley) and no filter other than sock in tank,, never another problem.
Plastic tank with no rust to worry about. Right or wrong, just my expierence.
I would have a field day with Edlebrocks quality control people, roasting two pumps because of using a fuel fliter is ridiculus  I don't worry about the debris created in the tank in my cars, I worry about the debris coming out of the fuel truck that delivers the fuel and then the debris in the underground storage tanks and so on  Lots of gremlins out there, Murphy has bit me more than once on debris in the needles and seats at the race track and on the street when I ran no fuel filters  
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
Re: Filter first or not?
[Re: Cab_Burge]
#1685418
10/14/14 03:54 PM
10/14/14 03:54 PM
|
Joined: Dec 2005
Posts: 11,743
Fulton County, PA
CMcAllister
Mr. Helpful
|
Mr. Helpful
Joined: Dec 2005
Posts: 11,743
Fulton County, PA
|
Filter before the pump. Make sure the filter and plumbing from the tank to the pump will flow enough to not allow any cavitation.
I use a paint strainer in the funnel I use to put fuel in the cell. And I'm anal about keeping the jugs clean. Keeping crap out of the system to begin with is most of the battle.
If the results don't match the theory, change the theory.
|
|
|
Re: Filter first or not?
[Re: CMcAllister]
#1685419
10/14/14 04:03 PM
10/14/14 04:03 PM
|
Joined: Jan 2003
Posts: 13,407
Marion, South Carolina [><]
an8sec70cuda
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 13,407
Marion, South Carolina [><]
|
Quote:
Filter before the pump. Make sure the filter and plumbing from the tank to the pump will flow enough to not allow any cavitation.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
|
|
|
Re: Filter first or not?
[Re: an8sec70cuda]
#1685421
10/14/14 04:15 PM
10/14/14 04:15 PM
|
Joined: Feb 2004
Posts: 34,964
S.E. South Dakota !
bigdad
Still Posting A Lot
|
Still Posting A Lot
Joined: Feb 2004
Posts: 34,964
S.E. South Dakota !
|
I talked to Aeromotives head of tech and he told me to never pre-filter his pumps Explained to me as like laying a coke bottle on its side and you see the bubble, that will cause Cavitation And it burn out the pump
|
|
|
Re: Filter first or not?
[Re: bigdad]
#1685422
10/14/14 04:25 PM
10/14/14 04:25 PM
|
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
|
Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
|
Quote:
I talked to Aeromotives head of tech and he told me to never pre-filter his pumps
Explained to me as like laying a coke bottle on its side and you see the bubble, that will cause Cavitation
And it burn out the pump
And he would be right imo, but everyone one wants a bit of insurance for there expensive pumps.
I never used any strainer from the fuel cell to the pump on any belt driven mechanical pumps I have raced with. Never liked electric. We strained the fuel in the funnel as we fill the fuel cell. We also go to great pains to keep the fuel clean, like replacing our fuel jugs every 2 years because the methanol will lift little pieces of plastic from the inside after extended storage. So we started putting the methanol back in the steel drum and storing our plastic fuel jugs empty during the off season. Then used a outlet filter on our NA injected motors and no filters at all on our TAD screw blown hemis because filters strainers interrupt fuel flow.
But on the other hand, this can happen without filters.
One plugged nozzle with anything can torch a block, sleeve, head, headgasket and piston. It makes a mess of things behind the motor too, like burns off the parachutes, trans safety blanket and all the wiring.
Here's what a piston looks like if the nozzle get's restricted under 60PSI of boost.
|
|
|
Re: Filter first or not?
[Re: bigdad]
#1685424
10/14/14 08:13 PM
10/14/14 08:13 PM
|
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
Quote:
I talked to Aeromotives head of tech and he told me to never pre-filter his pumps
Explained to me as like laying a coke bottle on its side and you see the bubble, that will cause Cavitation
And it burn out the pump
EVERY electric fuel pump has a pre-filter in ALL
production cars... and we worry about warranty more
than any company... I run tree catcher(100 micron)
filters before all my pumps and if its injected it
gets a 10 micron filter after the pump... you CANT
choke a pump with a small filter(thats micron and
size) along with the pre pump hose... the pump creates
the negative pressure so the atmospheric pressure
can PUSH in the fuel
|
|
|
Re: Filter first or not?
[Re: bigdad]
#1685425
10/14/14 08:39 PM
10/14/14 08:39 PM
|
Joined: Dec 2005
Posts: 11,743
Fulton County, PA
CMcAllister
Mr. Helpful
|
Mr. Helpful
Joined: Dec 2005
Posts: 11,743
Fulton County, PA
|
Not saying he's wrong, but that's the first I've heard that. Another consideration to help prevent anything like this is to always mount the pump so that the pump inlet and plumbing from the tank to the pump are below the level of the fuel in the tank. Gravity will keep the inlet side full rather than relying on the pump to lift it.
If the results don't match the theory, change the theory.
|
|
|
|
|
