ELECTRIC PUMP = CARTER VS HOLLEY

[MIDNIGHT RIDER]

I am in the process of installing an electric-fuel-pump bypass.

My intentions are to have the electric pump in a bypass line that can be called upon for filter-priming, emergency use in the event of a mechanical-pump failure, and occassional emptying of a tank in the event I may need to remove one for whatever reason.


I have three electric pumps on hand, an old A/C unit that has 1/8NPT ports, a like-new Holley Red, and a brand-new-in-the-box Carter P4070.

Between the Holley and Carter, which is the superior pump ??

I understand the Holley mounts with the motor-housing up top; whereas, the Carter says to hang the motor down, such that the flowing fuel circulates throughout the motor-housing, thus cooling and lubricating the pump.

Also, the Carter has rubber bushings around the three mounting bolts; whereas, the Holley mounts solid to the frame.


Educated opinions, please.

Thanks.

 

[Agnem]

If your only using it to prime the system, and as a stand by, get a cheap Facet. Using a Holley Red the way you state, would be like using an F-350 to haul what would fit in a childs pull behind wagon. A better idea is to gut the mechanical all together, and just use a Holley Red in its place. The bypass scheme is really overkill and overcomplicated.

 

[MIDNIGHT RIDER]

If your only using it to prime the system, and as a stand by, get a cheap Facet. Using a Holley Red the way you state, would be like using an F-350 to haul what would fit in a childs pull behind wagon. A better idea is to gut the mechanical all together, and just use a Holley Red in its place. The bypass scheme is really overkill and overcomplicated.

I already own the Holley and the Carter; I would have to buy a Facet.


The bypass is no big deal, just two TEES, two check-valves, a switch and a few feet of wire.


Thanks.

 

[sle2115]

I like the Carter myself, I think they are much quieter, although you can hear it running with the engine off. That's what's on mine and I've had good luck thus far. For your intended use, I don't think it would matter through as noise won't be a factor either.

 

[hesutton]

I have no experience with the Carter, but I do have a Holley Red. I use a constant duty relay and the pump also has a oil pressure saftey switch. Once oil pressure is > or = to 7 psi, the Holley gets power. I have that on a toggle to bypass that feature when doing work on or bleeding the fuel system.

The Holley will provide about 5 psi of fuel at the filter head all day long. I've had trouble with a crappy relay, but never the pump itself. I completely removed my mechanical lift pump and just use the Holley. It's been two and half years now, and it works like a charm. It will be worth the effort of putting the pump on the first time you need to bleed the system. Trust me. No cranking and cranking, and cranking. When I changed my IP and injectors to the DPS units, I bleed the filter and ran the Holley for a minute, I cranked the truck and it started after two revoultions and ran like a top.

Either way, I'd ditch the mechanical fuel pump.

Heath

 

[MIDNIGHT RIDER]

Either way, I'd ditch the mechanical fuel pump.

Heath

I probably would if it were still an old diaphragm-type; my mechanical lift-pump is a piston-pump with a manual primer-pump; it holds a steady 15-PSI after all of the filters.


So far, it's about an even vote between the Carter and the Holley.


Thanks.

 

[sle2115]

15-PSI after all of the filters.

Doesn't 15 PSI affect your timing? Stock from the book I have is 4 to 7 PSI. I'm running right at 7 with no problems, but I would think 15 (double the required) would wreak havoc with the timing. Then again, if it's consistent, you can probably adjust for it.

 

[69dieselfreak]

Doesn't 15 PSI affect your timing? Stock from the book I have is 4 to 7 PSI. I'm running right at 7 with no problems, but I would think 15 (double the required) would wreak havoc with the timing. Then again, if it's consistent, you can probably adjust for it.

from his sig he is running a cumapart

 

[Exekiel69]

Doesn't 15 PSI affect your timing? Stock from the book I have is 4 to 7 PSI. I'm running right at 7 with no problems, but I would think 15 (double the required) would wreak havoc with the timing. Then again, if it's consistent, you can probably adjust for it.

He doesn't have an IDI .

I have used both and thought the facet pump was better but I got to send it back for a replacement after only 4 weeks of use. Maybe it was just a defective one but the holley never did that to Me. I'm still running a facet pump but I do like the holley system better I only wish it would pull fuel as fast as the facet.

 

[MIDNIGHT RIDER]

He doesn't have an IDI .

I beg your pardon; I most certainly do have an IDI....................; it's presently attached to a chain-hoist and resting on an old 10.00-20 tire on the shop floor.

 

[MIDNIGHT RIDER]

Doesn't 15 PSI affect your timing?

Actually, the Stanadyne is a mechanical gear-driven pump and timing should remain the same, regardless of fuel-pressure, unless I am not seeing something; please enlighten me on this.


Where too much pressure will get you is by pushing out the seals, thus causing fuel to pour into the crank-case.

 

[sle2115]

Actually, the Stanadyne is a mechanical gear-driven pump and timing should remain the same, regardless of fuel-pressure, unless I am not seeing something; please enlighten me on this.


Where too much pressure will get you is by pushing out the seals, thus causing fuel to pour into the crank-case.

Shoving too much pressure through the IDI IP can cause timing flucation, according to those in the know. I guess I didn't read your sig close enough, as others have pointed out, so it's a non-issue.