| [GMCnet] Gas Tank Switching Valve Conundrum [message #334396] |
Sun, 01 July 2018 22:38  |
glwgmc
Messages: 1014
Registered: June 2004
Karma: 10
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Senior Member |
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Easy, Carl. Get a five pin relay. The center pin will be normally on. Wire that to the pump you normally want to use. I like the main, rear tank. Wire the normally off pin to the other pump. Run a 12 gauge wire from a good battery source to the relay. Run a wire from the relay turn on pin to the selector valve. When you turn the key on or to start the primary pump will run. Any time you want to switch just hit the tank selector switch to turn off the primary and start the secondary pump. The gas gauge will read whichever tank you have selected. Put check valves forward of each pump. Use a large canister fuel filter between each pump and that pumps tank mounted where you can easily change the filters once a year. Remove the mechanical pump and you can likely kiss vapor lock Good by.
Jerry
Jerry Work
Kerby, OR
.....:
Carl Stouffer
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] Gas Tank Switching Valve Conundrum
Message-ID:
Content-Type: text/plain; charset="utf-8"
Thanks Ken,
Yes, I did buy a new selector valve from Applied, along with all the other components. Your advice is well taken, and that is probably what I should
do.
However, I probably won't :roll: At least not this time around. The new valve is identical to the old one, which worked perfectly upon testing it
on a battery. I only replaced it (again) because it has been recommended here ans elsewhere. I had the old pump, which proved to not be up to the
task, before the valve and it never presented a problem.
I guess I could return the new valve and buy another pump. Do you have a wiring diagram for the set-up you are advocating?
--
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction
.........
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Jerry & Sharon Work
78 Royale
Kerby, OR
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| Re: [GMCnet] Gas Tank Switching Valve Conundrum [message #334399 is a reply to message #334396] |
Sun, 01 July 2018 23:12  |
BobDunahugh
Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA
Karma: 11
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Senior Member |
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I did what Ken suggested. Then there's a relay for the pumps. That the dash switch controls. Love it being outside of the frame. I mounted the components on a 1/4"aluminum plate. About 6"X14" Then mounted the plate to the underside of the floor. Steel line out of the two tanks. Then a steel line from the pumps to the front. The Carter 4070 is a great pump for a carb. Bob Dunahugh
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