6 volt fuel pump
 

Who makes Macs 6 volt pumps?? One on my 36 works great for starting only On 55 no good..So which is a good one for starting only on my 55??I mean what brand name??Thanks guys And or gals

Re: 6 volt fuel pump
 

I'm running Airtex E8902 6 volt pumps on two cars for starting only. They are low pressure pumps and will push gas right through your mechanical pump to your carb.

Re: 6 volt fuel pump
 

The Airtex E8902 6 volt is a 4 lbs. pressure fuel pump that is highly recommended by my sources. A pump with a higher than 4 lbs. pressure can cause problems, I am told.

Re: 6 volt fuel pump
 

I also use the Airtex mentioned but the 4 lbs blows past my float valve on my carburetor and I have to use a pressure regulator.

Re: 6 volt fuel pump
 

4# is like a 1/2# over the ford specified Max already.You will have problems.Biggest concern is flooding and an engine fire,there NO fun. ken ct.Put a good rebuilt mechanical pump on there and you wont need an electric one. OMO. ken ct.

Re: 6 volt fuel pump
 

I'm using a Carter pump, but have it cranked down to 1.5 psi and I use a Holley Fuel Reg. works perfect !

Mike

Re: 6 volt fuel pump
 

Ditto on the Airtex.
Gary.

Re: 6 volt fuel pump
 

The Airtex E8902, even with 4 lbs, will work just fine for starting and vapor lock situations. It isn't like you are using it all the time. Shouldn't blow by the float if using for priming or vapor lock.

Re: 6 volt fuel pump
 

Mine from Mac's bought last year is a Carter 6V. I run it as a backup and for priming only but the mechanical pump cannot pull through it when turned off. The Airtex pump mentioned above can be turned off and allow the mechanical pump only to run.

It's that time of year for vapor lock! But I'm not complaining...

Re: 6 volt fuel pump
 

The fuel pump from Mac's part No. EFP-9359-6 is made by Carter. It is a full flow through pump. I use mine only to prime or overcome vapor lock. I have no problem when driving with it shut off. Before hooking up the lines upon installation I put power to it to test it. It was pushing air toward the gas tank, but was located properly with the guide arrow pointed toward the front. Realized that it may be running backwards. Reversed the wiring and it works great. In other words our Fords are Positive not negative ground. Called Carter and their Tech said running it this way will be no problem.

Re: 6 volt fuel pump
 

It sure will blow past the float needle even when priming its still being force fed @4# of pressure to the carb. The excess pressure will not let the needle close when the bowl is full.Thats my answer and im sticking to it. ken ct. Result gas all over the place,good recipie for a fire. ken ct.

Re: 6 volt fuel pump
 

Recommend the Facet pump, Made in the USA in NY by Purolater. Tech support is great, and will advise which model # to use based on the carb. you are using. Solid state pump, no pressure regulator required. Example, the #40104 is rated at 4.0 to 1.25 PSI and 25 gph. Mine was $33.00. I would not buy anything from Macs, it may be easy, but it's junk, made you know where, and the best part is they don't care.

Re: 6 volt fuel pump
 

Macs parts are junk. Stay away . Facet and Airtex make good electric pumps. They are fine to use with 94s, 48s, and 97s. The 4 pound ones work . If the pump is mounted near the gas tank and you use a 1/4 inch gas line by the time it gets to the carb its only 2 1/2 to 3 pounds . I have checked with a fuel preasure gague at the carb.

Re: 6 volt fuel pump
 

QC34
If the pressure on one end of a 1/4 tube is 4 #s it will be 4 #s on the other end.

Bruce

Works good
Last long time

Re: 6 volt fuel pump
 

Need some conformation on this. I have heard that you could use a 12 volt fuel pump on a 6 volt system and it would operate normally but cut the pressure output by half. Any truth to this??

Tom

Re: 6 volt fuel pump
 

The 6V Carter pump I got from Macs for priming/starting works well, but did need a bi-pass valve as the mechanical pump will not pull enough fuel through it above 30 mph. It is advertised, if I remember correctly, as a 2-3 1b pump, but I shut it off prior to starting when I hear it slow down - the point when it comes to the inline pressure resistence brought about by a full carb - to prevent potential flooding. If I need another pump I will get an Airtex to do away with the bi-pass valve.

Re: 6 volt fuel pump
 

Ken...I thought you would be on your way to Tahoe! Those folks out there need carbs & pumps! I couldn't go either. Sounds like fun though.

As far as priming with the electric pump...I try to prime the mechanical pump and not necessarily the carb. The mechanical pump will introduce the fuel to the carb. I only prime with the electric pump for a couple of seconds or so. Like you stated...you don't want to overload the carb!

Regards,
Pat

Re: 6 volt fuel pump
 

Instead of priming with 6v pump why not just install a check valve gas hose to mechanical pump? Same result?

Re: 6 volt fuel pump
 

Not if you're vapor locked.:(

Re: 6 volt fuel pump
 

I would love to go but have knee replacement comming up July 1st and will have to curtail rebuilding for a while. I have a pretty good stock of carbs and FP's and dist to last me out for a while. Thanks ken ct.