Dual Fuel Systems???????????/
01-24-2009, 05:18 AM
#21
0.0 BAR
Join Date: Apr 2006
Posts: 0
Re: Dual Fuel Systems???????????/
i have a mechanical fuel switching valve with 3/8" ports from my IH.
go find a dual-tank truck. grab two valves. done and done. older trucks are mechanical, EFI are electric and run a nog toggle. dunno which will work better for you
go find a dual-tank truck. grab two valves. done and done. older trucks are mechanical, EFI are electric and run a nog toggle. dunno which will work better for you
01-24-2009, 02:18 PM
#22
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Join Date: Dec 2005
Location: Casper Wyo.
Posts: 0
Re: Dual Fuel Systems???????????/
My description of the switching valves and part # are the ones used to replace Ford and Chevy dual fuel tank systems.
The part # can be used in universal form keep in mind the Ford trucks in the 80's and early 90's used a setup with one wire where if the primary front tank runs out of fuel before you switch tank you will not be able to switch to the other tank, try no emulate this set-up. If you get a simple 6-port with one wire switch it will be the easiest way to go I installed one on a '77 GMC 3/4 ton van I had a 35gal. rear tank and a 16gal saddle tank from a '87 Chevy 1/2 ton and it worked awesome until the fuel prices went above $2.00/gal. 51 gallon fill-up killed my wallet I would only be able fill up once every 6-months.
The part # can be used in universal form keep in mind the Ford trucks in the 80's and early 90's used a setup with one wire where if the primary front tank runs out of fuel before you switch tank you will not be able to switch to the other tank, try no emulate this set-up. If you get a simple 6-port with one wire switch it will be the easiest way to go I installed one on a '77 GMC 3/4 ton van I had a 35gal. rear tank and a 16gal saddle tank from a '87 Chevy 1/2 ton and it worked awesome until the fuel prices went above $2.00/gal. 51 gallon fill-up killed my wallet I would only be able fill up once every 6-months.
01-24-2009, 02:29 PM
#23
0.5 BAR
Join Date: Jun 2008
Posts: 100
Re: Dual Fuel Systems???????????/
didn't read through all of this but I say screw all these switching valves BS
just add a check valve on the stock line, and a check valve on the new line. Tee them together before the fuel filter. Have electrical switches to turn your fuel pumps on and off. Done.
just add a check valve on the stock line, and a check valve on the new line. Tee them together before the fuel filter. Have electrical switches to turn your fuel pumps on and off. Done.
01-25-2009, 01:02 PM
#24
3.0 BAR
Join Date: Jan 2003
Posts: 4,438
Re: Dual Fuel Systems???????????/
Originally Posted by stealthiskey
didn't read through all of this but I say screw all these switching valves BS
just add a check valve on the stock line, and a check valve on the new line. Tee them together before the fuel filter. Have electrical switches to turn your fuel pumps on and off. Done.
just add a check valve on the stock line, and a check valve on the new line. Tee them together before the fuel filter. Have electrical switches to turn your fuel pumps on and off. Done.
01-25-2009, 01:09 PM
#25
0.5 BAR
Join Date: Jun 2008
Posts: 100
Re: Dual Fuel Systems???????????/
Your logic is flawless :1
He DOESNT want to run two fuel rails.
He DOESNT want to run two return lines.
He WANTS cheap ideas.
AND WHY THE ---- WOULD YOU TRY AND SWITCH FUELS WHILE IN BOOST!??! :1 recipe for disaster
Drive to the track. Idle the car. Turn on secondary fuel pump. Turn off primary fuel pump. Idle till race gas purges the lines. RACE. Switch back to primary pump. Drive home.
Originally Posted by 88dx
I want to run a dual Fuel system on my Hatch, Stock tank with a walbro then a 1gal fuel cell in the back with a inline pump that i can just put race gas in 
So what kinda cheap Ideas do you guys have for switching between the 2? I dont really want to run 2 fuel rails/injectors and probably just a single return line back to the stock tank.
So what kinda cheap Ideas do you guys have for switching between the 2? I dont really want to run 2 fuel rails/injectors and probably just a single return line back to the stock tank.
Originally Posted by accordepicenter
cant you just use fuel solenoids off of old nitrous systems? If i were really wanting to do this, i would take another fuel rail and injectors and weld in a secondary set of bungs, so youd have 2 separate fuel rails and injectors, and have relays set up with boost sensing switch that as soon as you hit a preset boost level, the race gas injectors come on and the pump gas injectors cease working entirely, when in boost. Thats the only way i know of to ensure that you are getting 100% race fuel and not a race fuel/street fuel mix... even if you use valves and solenoids or whatever feeding right into the fuel rail, it is eventually going to empty the race fuel and dilute it into the pump gas tank in a return type fuel system. Plus there is gonna be residual pump gas in the fuel rail, so cyl 1 is gonna be running from the pump gas the longest because its farthest from the fuel supply side, it would be an undetermined amount of time before each cyl would be running from 100% race gas.
He DOESNT want to run two return lines.
He WANTS cheap ideas.
AND WHY THE ---- WOULD YOU TRY AND SWITCH FUELS WHILE IN BOOST!??! :1 recipe for disaster
Drive to the track. Idle the car. Turn on secondary fuel pump. Turn off primary fuel pump. Idle till race gas purges the lines. RACE. Switch back to primary pump. Drive home.
01-25-2009, 02:01 PM
#26
3.0 BAR
Thread Starter
Join Date: Nov 2003
Posts: 5,838
Re: Dual Fuel Systems???????????/
Originally Posted by stealthiskey
didn't read through all of this but I say screw all these switching valves BS
just add a check valve on the stock line, and a check valve on the new line. Tee them together before the fuel filter. Have electrical switches to turn your fuel pumps on and off. Done.
just add a check valve on the stock line, and a check valve on the new line. Tee them together before the fuel filter. Have electrical switches to turn your fuel pumps on and off. Done.
01-26-2009, 02:38 PM
#28
3.0 BAR
Thread Starter
Join Date: Nov 2003
Posts: 5,838
Re: Dual Fuel Systems???????????/
Originally Posted by Joseph Davis
I must repeat that I think it's a bad idea. You spend a lot of money to accomplish nothing. Most Honda make more off pump gas than they can hook.
Im proably going to wait and do this after I get all the little things worked out with the car.
01-26-2009, 03:09 PM
#29
0.0 BAR
Join Date: Feb 2003
Posts: 0
Re: Dual Fuel Systems???????????/
It's not going to work like you are hoping, for a variety of reasons.
I know when the "bad" gas during the shortages was going around, -14 octane sold as 93 sort of BS, I could fill up with real 93 on a nearly empty tank and it would take 2-3 minutes driving before the pingies went away on my 12.5:1 beater.
I know when the "bad" gas during the shortages was going around, -14 octane sold as 93 sort of BS, I could fill up with real 93 on a nearly empty tank and it would take 2-3 minutes driving before the pingies went away on my 12.5:1 beater.
