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Electric Fule pump
Posted: Wed May 07, 2008 11:46 am
by rick1954
I finely got my Holley electric fuel pump to install in the boat. (Yes it is for a marine application) this little bugger will pump 70gph at 14psi. Lets see her starve for fuel now, I will see what she will do WOT “briefly†need to save money fro beer

. It should be a snap to install, the reg has two ports for two carbs
Nice.
Posted: Wed May 07, 2008 11:55 am
by Stripermann2
Rick, are you using this pump for carburetor application? Most carbs run at 7-9 psi. If so, you will certainly have issues...may need to regulate it down.
Posted: Wed May 07, 2008 12:41 pm
by rick1954
I am with you on that one, this is the high pressure pump (712-802-1) it comes with a regulator (12-803) pressure range 4-1/2 to 9psi , that is why I got the one for a marine application, I did not want any more problems. When that boat stops in the water, it is like a lead tub.
Posted: Wed May 07, 2008 12:56 pm
by Stripermann2
The only other advise I can offer is to wire it into a oil pressure switch or ignition primary side for example... God forbid you blow a line or develop a fuel leak, you want that pump to shut down immediately if engine dies.
Don't want continuous fuel spraying over a hot engine!!
Posted: Thu May 08, 2008 7:43 am
by rick1954
I can appreciate the concerns over the el-pump, this I also have and thank you very much. It took me a long time reviewing my options and I feel that this is the best one. The pump is manufactured by Holley for a marine applications and is approved by the powers to be. I was reviewing the oil switch Idea and feel that the down side out ways the good. If you don’t power the pump up on ignition, and if the carb perks out, you will have a hard time starting the engin. This pump has a pressure bypass allowing you to power it up continues , if that is what you want to do.
Also I am installing this pump hard, no rubber hose , just like what is on the boat now, this should take care of any blown hose problem.
I also have installed a sniffer, this will turn on the blower and alarm at one tenth of one % of the flammable gas needed to flash over. I don’t think you can be positively safe in either a mechanical pump or an el-pump application.
I need a 5 amp circuit to drive the pump, so I am going to come off the coil (low voltage side) lol, and drive a relay to feed the pump this
NO wait I got it!! I will come off the starter sol, and drive a relay, hook the pump to the c terminal of the relay. On the nc terminal hook the pressure switch to +12vdc On the no terminal of the relay hook to +12vdc. Now when you crank the engin the pump will be live, once engin has started the relay will de-energize and the pump will run thru the pressure switch There Stripermann2, I am using your advice and solving my problem at the same time.

Posted: Thu May 08, 2008 9:24 am
by Stripermann2
Rick...see what a cold beer and a few minutes of thinking will get you!

Posted: Thu May 08, 2008 9:40 am
by rick1954
Absolutely, beer and boat go together like soup and sandwich

now to get her done
