electric fuel pump options?

[Lonewolf1990]

alright datsun fam its time for me to installed a electric fuel pump

i already went through 3 mechanical pumps this year

so what options of fuel pumps do i have?

i have a 77 620 lb20 engine and im running A WEBER 32/36

[Stinky]

Personally, I'd say run a good mechanical.

 

On my 720,  I am running an Autozone electric, off the shelf....in the aisles.

 

But, it putvout to much pressure and I am running a regulator, with gage.

 

https://www.autozone.com/fuel-systems/fuel-pump-universal&filterByKeyWord=fuel+pump&fromString=search&isIgnoreVehicle=false&model=fuel

[wayno]

Where did them 3 mechanical pumps come from, were they new or used, if new where did you buy them?

[Lonewolf1990]

On 8/10/2020 at 10:47 AM, wayno said:

Where did them 3 mechanical pumps come from, were they new or used, if new where did you buy them?

i bought all three from oreillys brand new , the spring and pin come come loose

[wayno]

That really is not a good place to by parts like that, likely made in mainland China, do you have an original fuel pump to rebuild yourself?

[Stinky]

Oh...720s came w.an electric pump, I did not convert it.

[Lonewolf1990]

30 minutes ago, Stinky said:

Oh...720s came w.an electric pump, I did not convert it.

That safe to use with a Weber?

[Crashtd420]

6 hours ago, Lonewolf1990 said:

That safe to use with a Weber?

The biggest thing with the Weber is you want about 3 psi.....

 

I used a low pressure high volumn pump from Carter p4070....

https://www.summitracing.com/parts/crt-p4070

It's a rotary vain style.... 

You might need different fittings,  it comes with 3/8 diameter outlets...

Just check the diameter of your fuel line...

 

I did have to use a pressure regulator because it was putting out about 6psi...

https://www.jegs.com/i/Holley/510/12-804/10002/-1

There are 2 outlets so you could actually thread a pressure gauge into the 2nd outlet.... There are others similar and more expensive...

I do find the regulator to buzz a little, I have been meaning to put a rubber insulator pad where it mounts.....

 

I have been running this setup for about 3 years and 7500 miles with no issue...

[Charlie69]

On you 620 is the return line to the tank still in use?  If it is get a 720 pump from any wrecking yard.  Rarely go out, designed to run contiously.  Quietest option or a Facet.

 

Facet carbed fuel pump

[Stinky]

When I put it on, it would put out black smoke at an idle....rich. 

 

I put a regulator on it.  I made a part....from a hardware store, I got a brass tee, a brass close-nipple, and 2 brass hose barbs and a small gage (about an inch around).

 

I brazed a piece of metal to the T, and bolted it to the fender-liner 

 

I plumbed it so the gas went straight thru the tee and the gage was at 90 deg, facing up.

 

Soooo, it is barb, regulator, nipple, Tee (w.the gage at the 90), barb.

 

I needed  to add some hose to it,, a few inches.

 

In the winter, I was running .5#, or 1 # of pressure.  When it warmed up, it would vapor-lock.  So, now I am at 2-2.5#.

 

[datzenmike]

The 720 has a return line that would prevent vapor lock and it wouldn't vapor lock in the winter anyway.

[K Appley]

On 8/12/2020 at 2:23 PM, Charlie69 said:

On you 620 is the return line to the tank still in use?  If it is get a 720 pump from any wrecking yard.  Rarely go out, designed to run contiously.  Quietest option or a Facet.

 

Facet carbed fuel pump

 

Agree, the best fuel pump made. You will never wear it out

[banzai510(hainz)]

I did not know Facet was USA made which is good

[pdp8]

I like the old Bendex-type pumps.  Low pressure, built-in fuel filter, usually US-made, and flight-rated.

I've manged to score some off Ebay on the cheap.  I see some now for under $30.