| Added dual fuel pumps [message #342028] |
Thu, 28 March 2019 09:26  |
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RF_Burns
Messages: 2277
Registered: June 2008
Location: S. Ontario, Canada
Karma:
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Senior Member |
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Hi all,
I removed the fuel tank selector valve and installed dual fuel pumps. The wire that operated the valve now operated a relay to switch power to the desired fuel pump. The fuel pumps have a built-in check valve so the fuel does not flow back through the other pump.
Tested and all seems to work as designed!
One thing I will change is the power wire to the fuel pumps. I have a Howell EFI wiring harness. The power wires are only #18 and I have lots of #14 wire. I'll check the voltage drop across the existing wires just for fun.
Here is a couple of pics.
http://www.gmcmhphotos.com/photos/g7210-dual-fuel-pumps.html
Here is a PDF on the importance of proper fuel pump voltage:
http://www.gmcmhphotos.com/photos/dual-fuel-pumps/p66136-the-importance-of-proper-fuel-pump-voltage-tsb.html
I know the brass T is hitting the hole in the frame. I'll put a section of rubber hose on it to prevent rubbing.
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
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