Is anyone using an Edelbrock 1724 fuel pump on their FE? It appears to be the only pump that uses 3/8" NPT fittings and will support 600 horsepower.
Any input or comments on Edelbrock fuel pumps or a recommended mechanical fuel pump for an FE stroker will be appreciated.
Thank you.
Don
gt350bp
Yes. I am running the 1724 on my 67 GT500 with the factory dual quads on a 427. I had problems with the Carter. It was putting out almost 9 PSI and causing flooding issues.
The Edelbrock stays at about 5.5-6 PSI. The rich idle has all but subsided as well.
Thanks for the input, as that is what I needed to know! Just looking at the specifications on the Edelbrock pump, makes it look like a better option for a highly modified FE. The only thing I do not like is the polished finish. I guess a quick scuff and maybe a coat of brushed nickel spray paint will make it less noticeable?
Thanks again.
Don
gt350bp
Don,
I think it's actually polished aluminum, not chrome. If so, you can simply disassemble the pump and have it blasted. Be SURE to make sure they/you mask the lever and make sure there isn't any residual blasting media left. It is threaded differently than the Carter pumps. Let me see if I can find the part number for the brass fittings you'll need on my Summit invoice. I am running a 3/8" fuel line nipple and adapter for the pump to carburetor feed line.
If you're running 5/16 you should be able to contact their specifier for what you'll need. I am packing my flight bag and ironing my uniform.
I'll let you know either way before I depart this afternoon.
I have ordered the proper 3/8" barb and inverted flair for 3/8" fuel line. I'm using a 67 GT 500 3/8" fuel line from the pump to the Summit Racing carburetor fuel line with fuel pressure gauge. I used a 45 degree fitting at the Summit Racing fuel line as use on a 67 GT 500 with dual quads. I'm hoping the Edelbrock pump will index the same as the Carter, so the hard lines work all the way to the carburetor. Currently using a 750 cfm Quick Fuels carb, but dyno testing shows that it can use a larger carburetor.
Thanks for your help.
Don
gt350bp
I have the same set up on my 67 GT500. It is set up for AN. I had to clock my pump. The fittings you'll need from Summit are:
EDD124660, EDD821660. They were 3.99 each. Lubricate the fittings well when you install them.
There is a different way to dull down the finish if truly polished aluminum pump .You can use some aluminum spray cleaner on it from the auto parts store. Get the kind that says not for polished surfaces. The acid in the cleaner will dull down substantially the shine. I do this process after polishing out scars in P/S pump aluminum brackets . I have to dull down the shiny polished bracket to look more factory. I typically spray on quickly to get full foaming coverage for consistent level of sheen all over. Then I rinse with water. I leave on only maybe 10 seconds before rinsing for the dull sheen I am looking for. Leave foamed up aluminum cleaner on longer for even duller. I would try it quickly like I typically do first then if needed duller try again. That is if truly polished aluminum without any clear coating. Just thought that might be less of a hassle to completely disassemble the entire pump inside and out and risk contaminating with grit media. I don't know but you can try it . I would of course plug all fittings and tape up the pump arm before spraying.You get the idea.
Bob, If he wanted to restore to some semblance of cast texture it will need to be blasted. I used those acidic wheel cleaners on my intake and aluminum oil pan. They worked excellent.
Good comments on the finish, as I will likely just try to dull it down a bit, as I do not want to get into a pump disassembly. Just do not like the shiny chrome look. The Summit fuel line with pressure gauge is too much chrome, but I have used these on other vehicles and have been happy with them if you upgrade the gauge to liquid filled.
Ordered the 3/8" NPT inverted flair from my local NAPA store early this morning and they had it by 10:30 am.($4.69) I'm going to stay with the 67 GT 500 3/8" fuel line and stay away from AN fittings and braided lines. Just a personal preference to use hard lines from the pump up to the carburetor..
Thanks for the helpful tips and information. Hope to have it up and running for next weekend, as the pump is expected by Thursday / Friday.
Don
gt350bp
I'm not running AN fittings either. I was talking about how the pump inlet and outlet is threaded. The two listings is for a nipple and a male/ female fitting.
Looks like a 3/8" NPT male inverted flair and 3/8" NPT hose barb? That is what I am going to use so I can use the 3/8" dia. 67 GT 500 pre-bent fuel line from pump to Summit carburetor fuel line with pressure gauge. I'm just hoping the Edelbrock pump will index close to how the Carter pump does?
The Carter M6905 pump has 3/8" NPT fittings and will easily support that amount of power. It is rated at a little less than 6 PSI and is perfect for Holley carbureted applications. I like it a lot because it is an improved version of a 4441S pump (it has one additional check valve). I usually rebuild 4441S pumps with the parts from a 6905 in order to take advantage of the improved flow capacity.
Link to specs:
https://www.cartercarburetor.net/carter-m6905-mechanical-fuel-pump/ (https://www.cartercarburetor.net/carter-m6905-mechanical-fuel-pump/)
Quote from: gt350bp on June 26, 2020, 08:30:47 PM
Is anyone using an Edelbrock 1724 fuel pump on their FE? It appears to be the only pump that uses 3/8" NPT fittings and will support 600 horsepower.
Any input or comments on Edelbrock fuel pumps or a recommended mechanical fuel pump for an FE stroker will be appreciated.
Thank you.
Don
gt350bp
Once again, I guess Royce didn't read. The M6905 puts out as high as 9 psi of fuel pressure. Fit isn't the issue. This was also a problem noted in two other forums. It blows the needles off the seat in Holley Carburetors. If staying with factory looking plumbing there is no way to run a fuel pressure regulator.
It's why I removed the brand new 6905 Carter to begin with on an engine with less than 300 miles.
Drew, our resident carb re-builder is the one who told me to check the fuel pressure and recommended the Edelbrock.
The Edelbrock is about 5.5 psi and has solved the issue for many who suffer this issue and dilemma.
Royce,
Good morning!
When I checked the spec sheet on the Carter 6905 pump, it indicates 1/4" NPT fittings? The Edelbrock pump was the only pump showing 3/8" NPT fittings.
I definitely like the look better, but want the larger flow capacity and do not want to have to run a regulator.
Don
gt350bp
Don, the fitting was a bit to sort out. You're correct in your assumption. It's 1/4 NPT. Your converting 3/8" in and out. I dug through my invoices to get the numbers for you.
Make sure you lubricate the brass fittings when you install them. The aluminum was rough threaded and a little difficult to thread into the pump.
Got my pump yesterday and the threads were not very good! Good advise to lube them, but still have a concern, as my inlet barb ran very tight and felt like it may have galled the threads? Will see if it will pose any problems when I get the pump installed this morning! Will have to adjust on the hard fuel line from pump to carburetor fuel line, but should still fit.
Thanks for the help and input.
Don
gt350bp
Help!
Installed the pump and lines early this morning with no problem. Left the fuel line fitting slightly loose at the 45 degree fitting at the carb fuel line with pressure gauge. After cranking for a few seconds got fuel at the 45 degree fitting but no fuel pressure at the gauge and no fuel in the bowls. Tightened the fitting and cranked again for about 10 seconds, but no pressure and no fuel in the bowls? Never remember having to prime the carb or? Coil wire off, just trying to pressurize the fuel system. Need help! What is happening that I'm not getting fuel to the bowls?
Thank you.
Don
gt350bp
Daa! Not thinking this morning!
Cracked the carburetor line fittings and cranked for about 2 seconds and have fuel to the bowls! Yahoo!
Clean up, and re-install the power steering and should be ready to go. Another problem has popped up, but will deal with the Starter Bendix not engaging every time.
Don
gt350bp
Quote from: gt350bp on June 30, 2020, 08:56:03 AM
Help!
Installed the pump and lines early this morning with no problem. Left the fuel line fitting slightly loose at the 45 degree fitting at the carb fuel line with pressure gauge. After cranking for a few seconds got fuel at the 45 degree fitting but no fuel pressure at the gauge and no fuel in the bowls. Tightened the fitting and cranked again for about 10 seconds, but no pressure and no fuel in the bowls? Never remember having to prime the carb or? Coil wire off, just trying to pressurize the fuel system. Need help! What is happening that I'm not getting fuel to the bowls?
Thank you.
Don
gt350bp
I've been battling gremlins myself recently. two steps forward, one step back.
I pressurize the front pump with an electric pump in the trunk. That helps particularly when the car sits for a few weeks without running it.
Apparently there is some method in which the original fuel lines are bent from the pump to the carb.
It seems that metal tubing doesn't like 90 bends even if nice and smooth with a tubing bender method.
The 90 degree bends foster vapor lock, even cold. Strange but apparently true.
In my dual 4 set up I recently eliminated the factory dual 4 fuel log due to space conflicts. I went through extraordinary efforts to bend several configurations of tubing to replace it.
All that did was creat vapor lock under normal operating temperatures. I'm still working this out and may need to go back to the original fuel log? I'm not there yet but the answer from me is avoid 90 degree bends in both the metal fuel lines AND hoses.
Truth is stranger then fiction. I know. I'm strange too? :o
I had fuel pressure issues on my GT 350 Competition replica for quite some time. Changed everything accept the rollover valve in the vent line from the R-Model fuel cell, and now the fuel pressure is a constant 5 1/2 lbs. I think the valve was sticking and preventing proper venting is all that I can figure? My car sits for weeks at a time, so I use an electric fuel pump to pressurize the system and push fuel to the mechanical pump. Had to bleed the fuel system on this car also, as the Mallory pump does not like being installed above the fuel tank outlet. Mallory Technical Services flat out said that it must be installed below the fuel outlet. SW 240-A spec indicates that their pump will draw 48", so installing approximately 12" above the outlet in a R-Model is not an issue. Another benefit to the 240-A is that it allows the mechanical pump to pull through it unlike the Mallory 110 pump, so it can be shut down when cruising.
Might want to check that your tank is venting properly before redoing fuel lines and fittings?
Quote from: shelbydoug on June 30, 2020, 09:14:10 AM
It seems that metal tubing doesn't like 90 bends even if nice and smooth with a tubing bender method.
The 90 degree bends foster vapor lock, even cold. Strange but apparently true.
Truth is stranger then fiction.
Actually, although I question if the fluid medium at its' mechanically induced pressure makes this relevant, but yes, as in the process of blending the steel tube a loss in the cross sectional area within the tube is induced, this causing an increased velocity of the fluid in this area and this increased fluid velocity causes a reduction in the pressure particularly at the inside or short-turn of this radius; although being on the high pressure side of the system and with appropriate inside diameter tubing, with a proper execution of bending, the velocity differential should not be that great............normally. :)
Scott.
Better photo of the rollover valve that I believe was sticking?
Not from my experience it doesn't. Perhaps you did not read the Carter specs. It puts out 5 - 6 PSI. I am not surprised, you tyypically give advice that is clueless and not based on reality.
Quote from: The Going Thing on June 29, 2020, 12:59:01 AM
Once again, I guess Royce didn't read. The M6905 puts out as high as 9 psi of fuel pressure. Fit isn't the issue. This was also a problem noted in two other forums. It blows the needles off the seat in Holley Carburetors. If staying with factory looking plumbing there is no way to run a fuel pressure regulator.
It's why I removed the brand new 6905 Carter to begin with on an engine with less than 300 miles.
Drew, our resident carb re-builder is the one who told me to check the fuel pressure and recommended the Edelbrock.
The Edelbrock is about 5.5 psi and has solved the issue for many who suffer this issue and dilemma.
Your know-it-all one upmanship gets old. Drew Projedinik is the one that pointed this out. This is a problem with about 99% of them. Even on the FE forum. Yes, I know what it claims spec is. It isn't. I had the same issue and it stopped the flooding. This issue is covered thoroughly in the FE power forum as well.
Quote from: gt350bp on June 30, 2020, 11:16:41 AM
............... as the Mallory pump does not like being installed above the fuel tank outlet. Mallory Technical Services flat out said that it must be installed below the fuel outlet. SW 240-A spec indicates that their pump will draw 48", so installing approximately 12" above the outlet in a R-Model is not an issue.
Keep in mind that although your observation of the S.W. pump may be accurate, most all pumps (including this one), although some more than others, will provide a reduction in the delivery capabilities when having to lift the fuel from the reservoir; therefore it is always best if permitted to position the pump as low in the relationship to the fuel level presented as is reasonably possible. ;)
Scott.
Absolutely correct.
The compromise is setting it about 12" above the tank outlet in the trunk area as Shelby American did in the day, knowing the pump will be able to draw fuel up to 48" as advertised.
Don
gt350bp