Re: Fuel filter?
[Re: Mopar_Ray]
#1701821
11/27/14 12:55 AM
11/27/14 12:55 AM
|
Joined: Dec 2003
Posts: 2,586 Illinois, Indiana, Louisiana
ProStDodge
master
|
master
Joined: Dec 2003
Posts: 2,586
Illinois, Indiana, Louisiana
|
Won't it make sense that a finer filter would create more resistance to flow per given area, but increasing the surface area of the finer filter would result in the same resistance? In other words if I have a 10 micron filter with 1 sq.in. of filter surface area, it would have the same flow restriction as a 100 micron filter with 10 sq. in of surface area? So as long as my 100 micron fliter was rated to flow as much or more than the 10 micron filter, it should result in no additional strain on the pump.
Sorry, just threw this in for thought.
I run a 10 micron "Pre filter" and a 100 micron before the regulator. And the 100 micron filter is a pretty large unit (8" long, 2" diameter).
|
|
|
Re: Fuel filter?
[Re: ProStDodge]
#1701822
11/27/14 02:25 AM
11/27/14 02:25 AM
|
Joined: Mar 2012
Posts: 220
Jerry Kathe
enthusiast
|
enthusiast
Joined: Mar 2012
Posts: 220
|
Quote:
Won't it make sense that a finer filter would create more resistance to flow per given area, but increasing the surface area of the finer filter would result in the same resistance? In other words if I have a 10 micron filter with 1 sq.in. of filter surface area, it would have the same flow restriction as a 100 micron filter with 10 sq. in of surface area? So as long as my 100 micron fliter was rated to flow as much or more than the 10 micron filter, it should result in no additional strain on the pump.
Its apears you understand that filtration and flow are two seperate values...but you have your numbers backwards.
All the same, you are much further along with understanding this some.
|
|
|
Re: Fuel filter?
[Re: ProStDodge]
#1701823
11/27/14 02:29 AM
11/27/14 02:29 AM
|
Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
News flash boys... PUMPS DONT SUCK.. atmospheric pressure PUSHES the fuel into the pump.. the pump creates the negative pressure(just like the piston does on the engine).. thats why the pump companies tell you to go larger on the inlet side..thats also why you dont put a fine filter on the inlet side
|
|
|
Re: Fuel filter?
[Re: Jerry Kathe]
#1701825
11/27/14 03:20 AM
11/27/14 03:20 AM
|
Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
Quote:
Do what? You are kidding I hope.
Are you asking me "do what"... and no I'm not kidding
|
|
|
Re: Fuel filter?
[Re: MR_P_BODY]
#1701826
11/27/14 03:24 AM
11/27/14 03:24 AM
|
Joined: Mar 2012
Posts: 220
Jerry Kathe
enthusiast
|
enthusiast
Joined: Mar 2012
Posts: 220
|
Quote:
Quote:
Do what? You are kidding I hope.
Are you asking me "do what"... and no I'm not kidding
Um......ok....
|
|
|
Re: Fuel filter?
[Re: Jerry Kathe]
#1701827
11/27/14 03:32 AM
11/27/14 03:32 AM
|
Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
Quote:
Quote:
Quote:
Do what? You are kidding I hope.
Are you asking me "do what"... and no I'm not kidding
Um......ok....
I have a few years flowing pumps... if you dont think its atmospheric pressure try this.. get your biggest and baddest pump and flow it.. then apply a vac to the tank.. I'll bet you see the flow drop with the vac... I tested pumps a long time and did all sorts of tests... the same thing happens when you apply a vac to the oil pan.. the pump put put drops
|
|
|
Re: Fuel filter?
[Re: ProStDodge]
#1701830
11/27/14 04:38 AM
11/27/14 04:38 AM
|
Joined: Nov 2003
Posts: 1,664 North Sweden
RT540
top fuel
|
top fuel
Joined: Nov 2003
Posts: 1,664
North Sweden
|
Quote:
Won't it make sense that a finer filter would create more resistance to flow per given area, but increasing the surface area of the finer filter would result in the same resistance? In other words if I have a 10 micron filter with 1 sq.in. of filter surface area, it would have the same flow restriction as a 100 micron filter with 10 sq. in of surface area? So as long as my 100 micron fliter was rated to flow as much or more than the 10 micron filter, it should result in no additional strain on the pump.
Sorry, just threw this in for thought.
I run a 10 micron "Pre filter" and a 100 micron before the regulator. And the 100 micron filter is a pretty large unit (8" long, 2" diameter).
Yes, the size of a filter will of coarse increase the numbers of holes which will keep the speed( velocity) of the fuel down and equals in lower pressure over the filter. If you have a wire mesh filter in SS steel, the diameter of the wire will change how much of the filter area that is open and how much area that are lost with the actual wire material, so the exact same tube of wire mesh can have the same 10 microns( 10 my millimeters) and still have different flow/ pressure numbers. Inlet size and outlet size and also placement of those will also effect this.
|
|
|
Re: Fuel filter?
[Re: MR_P_BODY]
#1701831
11/27/14 12:34 PM
11/27/14 12:34 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:
News flash boys... PUMPS DONT SUCK.. atmospheric pressure PUSHES the fuel into the pump.. the pump creates the negative pressure(just like the piston does on the engine).. thats why the pump companies tell you to go larger on the inlet side..thats also why you dont put a fine filter on the inlet side
Welcome back...put some venison in the freezer?
|
|
|
Re: Fuel filter?
[Re: Challenger 1]
#1701832
11/27/14 12:46 PM
11/27/14 12:46 PM
|
Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
Quote:
Quote:
News flash boys... PUMPS DONT SUCK.. atmospheric pressure PUSHES the fuel into the pump.. the pump creates the negative pressure(just like the piston does on the engine).. thats why the pump companies tell you to go larger on the inlet side..thats also why you dont put a fine filter on the inlet side
Welcome back...put some venison in the freezer?
Thanks.. yeah the wife and I both took a 6 point... I passed on some others.. we have a 12 point running around but it never came out during the day
|
|
|
Re: Fuel filter?
[Re: Jerry Kathe]
#1701833
11/27/14 01:55 PM
11/27/14 01:55 PM
|
Joined: Nov 2004
Posts: 6,890 North Alabama
Monte_Smith
master
|
master
Joined: Nov 2004
Posts: 6,890
North Alabama
|
Quote:
Quote:
Quote:
Do what? You are kidding I hope.
Are you asking me "do what"... and no I'm not kidding
Um......ok....
How about doing a little research before you start blasting someone who has lots of fuel system experience. Mr P is EXACTLY right. Electric pumps are made to PUSH fuel and every company suggests they be gravity fed, but they WILL pull fuel from a dip tube once the siphon effect takes over
Monte
|
|
|
Re: Fuel filter?
[Re: MR_P_BODY]
#1701835
11/27/14 02:04 PM
11/27/14 02:04 PM
|
Joined: Jan 2003
Posts: 4,448 Phoenix, AZ
MoparBilly
master
|
master
Joined: Jan 2003
Posts: 4,448
Phoenix, AZ
|
Years ago we discovered the flow limits of the HPG1 fram filter while running our engine fuel, and nitrous system fuel from the same source.
Now we run the Mallory Comp500. Cannister type dual -8 inlet and outlet which works great with my favorite pump, the Dominator series Volumax 250 georotor which features a dual inlet and single outlet. The Mallory filter is 40 micron. It's an excellent upgrade from the HPG1.
"Livin' in a powder keg and givin' off sparks"
4 Street cars, 5 Race engines
|
|
|
Re: Fuel filter?
[Re: MR_P_BODY]
#1701837
11/27/14 02:18 PM
11/27/14 02:18 PM
|
Joined: Jan 2011
Posts: 4,785 Utah and Alaska
astjp2
master
|
master
Joined: Jan 2011
Posts: 4,785
Utah and Alaska
|
27.71" of head pressure = 1 psi of water, gas is almost the same in a car situation. SO if your tank is 14" below the tank, it will need to pull .5 psi to get it to the pump. More math makes the brain hurt....
1941 Taylorcraft 1968 Charger 1994 Wrangler 1998 Wrangler 2008 Kia Rio 2017 Jetta
I didn't do 4 years and 9 months of Graduate School to be called Mister!
|
|
|
Re: Fuel filter?
[Re: astjp2]
#1701838
11/27/14 02:20 PM
11/27/14 02:20 PM
|
Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
Quote:
27.71" of head pressure = 1 psi of water, gas is almost the same in a car situation. SO if your tank is 14" below the tank, it will need to pull .5 psi to get it to the pump. More math makes the brain hurt....
I just use 30" as a quick number so its easy to figure in my head... most dont give a damn about it
|
|
|
|
|