Jump to content

Mechanical Fuel Pumps. Whatcha Got?


Recommended Posts

  • Replies 32
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Popular Posts

The new one I put on in 2017 was a cheapo Delphi, DE MF0007 from Rock Auto for 15 bucks. Made in China of course, but it works fine. I run a 3/8 line to my Holley SA670 carb (4150) and have regularly

Mechanical or electric? Current mechanicals are limited to stock replacement, RobbMc race pumps, or the offshore sourced pump sold by Speedmaster, RPC and any other random seller name that buys t

Just an OE replacement from NAPA. I like parts that are easy to source. 

The new one I put on in 2017 was a cheapo Delphi, DE MF0007 from Rock Auto for 15 bucks. Made in China of course, but it works fine. I run a 3/8 line to my Holley SA670 carb (4150) and have regularly revved the old girl to 5K + without any fuel starvation issues.

  • Like 1

Geoff.

 I learn something new every day!

Link to post
Share on other sites

Mechanical or electric?

Current mechanicals are limited to stock replacement, RobbMc race pumps, or the offshore sourced pump sold by Speedmaster, RPC and any other random seller name that buys them at wholesale. I have no experience with them, but my distrust level is fairly high. If you're lucky, you might find a new old stock Holley or Mallory pump. 

If you're going electric, that gets murky, as there are so many out there. Holley seems to have gone all China made parts, and their pumps are no exception. A friend replaced his 20 yr old Holley HP pump and the new one lasted one entire day or cruising. summit took care of him and he replaced it with an Aeromotive SS unit, and so far, so good. 

  • Like 1

 

 

Link to post
Share on other sites
10 minutes ago, Hemikiller said:

Mechanical or electric?

Current mechanicals are limited to stock replacement, RobbMc race pumps, or the offshore sourced pump sold by Speedmaster, RPC and any other random seller name that buys them at wholesale. I have no experience with them, but my distrust level is fairly high. If you're lucky, you might find a new old stock Holley or Mallory pump. 

If you're going electric, that gets murky, as there are so many out there. Holley seems to have gone all China made parts, and their pumps are no exception. A friend replaced his 20 yr old Holley HP pump and the new one lasted one entire day or cruising. summit took care of him and he replaced it with an Aeromotive SS unit, and so far, so good. 

Mechanical. 

 

Chris - BIG RED MACH 1

Born in '73 - Drive a '73

Former U.S. Army 63B10-H8

1st Infantry Division - The Big Red One

 

Link to post
Share on other sites

Just an OE replacement from NAPA. I like parts that are easy to source. 

  • Like 1

[align=left]Jeff T.

 

When I die I want to die like grandpa, peacefully in my sleep... not screaming, like his passengers. [/align]

Link to post
Share on other sites

This is still what I have, works fine. Scroll down to 4th post. Chuck

 

  • Like 1
Link to post
Share on other sites
1 hour ago, Hemikiller said:

Funny, that post was by Fast E, who used to own Big Red's car... 

Right??? I'm not having the leaking issue he was, unless it's internal. Just very inconsistent fuel pressure even with a Summit regulator. I have had fuel in the oil, but always assumed that was from washing down the cylinders. Maybe not. 

Edited by Big Red Mach 1

Chris - BIG RED MACH 1

Born in '73 - Drive a '73

Former U.S. Army 63B10-H8

1st Infantry Division - The Big Red One

 

Link to post
Share on other sites
18 hours ago, Stanglover said:

The new one I put on in 2017 was a cheapo Delphi, DE MF0007 from Rock Auto for 15 bucks. Made in China of course, but it works fine. I run a 3/8 line to my Holley SA670 carb (4150) and have regularly revved the old girl to 5K + without any fuel starvation issues.

I went ahead and ordered this Delphi unit from Rock Auto as well. I didn't see where anything else was worthy of extra $ or wait. Thanks!!

  • Fist Bump 1

Chris - BIG RED MACH 1

Born in '73 - Drive a '73

Former U.S. Army 63B10-H8

1st Infantry Division - The Big Red One

 

Link to post
Share on other sites
1 hour ago, Big Red Mach 1 said:

I went ahead and ordered this Delphi unit from Rock Auto as well. I didn't see where anything else was worthy of extra $ or wait. Thanks!!

Like I said, I've had no problems with that one, but next time I order from R/A, I'll order a spare...... just in case.

  • Like 1

Geoff.

 I learn something new every day!

Link to post
Share on other sites

"A fuel pump with a defective diaphragm may be torn or have developed holes from wear. These tears or holes allow fuel to escape past the diaphragm and exit the fuel pump housing. A leaking fuel pump can be noticed as fuel droplets or puddles on the ground and a strong smell of gasoline when the car is running."

Boy, that sentence in red jumps right out. Anyone that knows my "Timing Frustrations" thread knows that I've been chasing this from day 1 of brining the car home. Also the lack of being able to dial in a carb (your pick of 3 different ones now) and keep it dialed in. 

Chris - BIG RED MACH 1

Born in '73 - Drive a '73

Former U.S. Army 63B10-H8

1st Infantry Division - The Big Red One

 

Link to post
Share on other sites
9 hours ago, Big Red Mach 1 said:

"A fuel pump with a defective diaphragm may be torn or have developed holes from wear. These tears or holes allow fuel to escape past the diaphragm and exit the fuel pump housing. A leaking fuel pump can be noticed as fuel droplets or puddles on the ground and a strong smell of gasoline when the car is running."oy, that sentence in red jumps right out. Anyone that knows my "Timing Frustrations" thread knows that I've been chasing this from day 1 of brining the car home. Also the lack of being able to dial in a carb (your pick of 3 different ones now) and keep it dialed in. 

................... then don't run it!!!

Find the problem. An external leak can't be that hard to find and fix. Can a fuel pump leak back into the crankcase? 

  • Like 1

Geoff.

 I learn something new every day!

Link to post
Share on other sites

Kinda funny but a few days after I read this post my fuel pump started leaking. I started my car yesterday and backed it out of the garage to let it warm up a bit. Went back in to turn the lights off and then I noticed that I had a pretty good leak coming from under the front engine area. Thought at first it might be radiator fluid cause I recently changed the thermostat. So I got under the car with the engine still running and I saw it coming from the fuel pump. Definitely gas, not rad fluid and I was even able to see it seeping from the fuel pump housing. 
So I just ordered a Carter from Rockauto. Nothing fancy, it was 16 bucks and I hope it works like it’s supposed to.

  • Like 1

John - 72 Q Code

Link to post
Share on other sites
1 hour ago, Stanglover said:

................... then don't run it!!!

Find the problem. An external leak can't be that hard to find and fix. Can a fuel pump leak back into the crankcase? 

They can. Although the external leak is far more common. But like I said, I don't have an external leak. I do have fuel in the oil and super inconsistent fuel pressure though. Could be a bad diaphram, but they way it's on and off, I'm actually wondering if it might not be the springs on the arm. I'll find out once I pull it. 

Chris - BIG RED MACH 1

Born in '73 - Drive a '73

Former U.S. Army 63B10-H8

1st Infantry Division - The Big Red One

 

Link to post
Share on other sites
1 hour ago, Hemikiller said:

@Big Red Mach 1 I might be interested in your old pump. Shoot me a PM when you swap it out. 

I'll do that. I know they can be re-built and it may be worth doing for sure if they don't make these anymore. 

Chris - BIG RED MACH 1

Born in '73 - Drive a '73

Former U.S. Army 63B10-H8

1st Infantry Division - The Big Red One

 

Link to post
Share on other sites
15 minutes ago, jpaz said:

Kinda funny but a few days after I read this post my fuel pump started leaking. I started my car yesterday and backed it out of the garage to let it warm up a bit. Went back in to turn the lights off and then I noticed that I had a pretty good leak coming from under the front engine area. Thought at first it might be radiator fluid cause I recently changed the thermostat. So I got under the car with the engine still running and I saw it coming from the fuel pump. Definitely gas, not rad fluid and I was even able to see it seeping from the fuel pump housing. 
So I just ordered a Carter from Rockauto. Nothing fancy, it was 16 bucks and I hope it works like it’s supposed to.

That's some crazy timing right there. Good thing your leak was external and you noticed it right away though. Since we have a Carter and Delphi both going in from Rock Auto at the same time, we'll have to remember this post and see which one lives longer. LOL

Chris - BIG RED MACH 1

Born in '73 - Drive a '73

Former U.S. Army 63B10-H8

1st Infantry Division - The Big Red One

 

Link to post
Share on other sites
2 hours ago, Big Red Mach 1 said:

That's some crazy timing right there. Good thing your leak was external and you noticed it right away though. Since we have a Carter and Delphi both going in from Rock Auto at the same time, we'll have to remember this post and see which one lives longer. LOL

 Well so far my Delphi is 3 summers old and no leaks................ yet!

  • Like 1

Geoff.

 I learn something new every day!

Link to post
Share on other sites

Ya that’s why I got the Carter since Stanglover already had a Delphi. We’ll have to see.
I don’t know what fuel pump is on my car that failed. It was new when I got the car, so it’s probably from 2013 or so.

  • Like 1

John - 72 Q Code

Link to post
Share on other sites
1 hour ago, jpaz said:

Ya that’s why I got the Carter since Stanglover already had a Delphi. We’ll have to see.
I don’t know what fuel pump is on my car that failed. It was new when I got the car, so it’s probably from 2013 or so.

 Well, now you've put the "mockers" on the Delphi, I'd better order another one soon!!

Geoff.

 I learn something new every day!

Link to post
Share on other sites

Don't know the brand of fuel pump but purchased it from Summit Racing.

A bit off the subject but what is the size of the rubber fuel line from the tank?

Want to install a check valve.  After the car sits for a while the gas drains back 

to the tank.

 

mike

 

spacer.png

Link to post
Share on other sites
4 hours ago, goodnigh said:

Don't know the brand of fuel pump but purchased it from Summit Racing.

A bit off the subject but what is the size of the rubber fuel line from the tank?

Want to install a check valve.  After the car sits for a while the gas drains back 

to the tank.

 

mike

 

 

3/8"

Before you spend money on a check valve, test your theory. Pull the inlet line off the pump and see if gas pours out. 

The real issue is the fuel is evaporating from the carburetor bowls. 

  • Like 1

 

 

Link to post
Share on other sites
1 hour ago, Hemikiller said:

 

3/8"

Before you spend money on a check valve, test your theory. Pull the inlet line off the pump and see if gas pours out. 

The real issue is the fuel is evaporating from the carburetor bowls. 

We removed the air filter and cranked the engine for a good 25 seconds or so until

we saw fuel in the carb. 

On a different note, what battery could crank a high compression Cleveland (D0AE)

for 25+ seconds with no noticeable loss of power?

 

mike

 

spacer.png

Link to post
Share on other sites

A group 27, 890 cranking amps that is fully charged. Chuck

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...