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Does Big Blue only have a single tank? I though the 460s all got dual tanks.
If not they sure can use them!
I had a 76 E350 with 460/C6 used to pull a 2 car/Jeep trailer to races.
The van did not come with a 2nd tank but we added one using stock parts. It helped us to pass a few stations before needing gas again.
Also worked good driving to Cali and back pulling a 1 car trailer.
Dave ----
Gary, I found something that might be of use to you. It has a Ford publication number (at least I think that is what it is) of 365-198S-86, the whole 18 pages of wiring diagrams for Darth (no good to me any more), do you think it might help?
Bill - I'm in absolutely no hurry as I don't have an immediate use for them. And, here's a view of the tank:
As for #3 of the Dollars Trilogy, in reverse order:
The Bad: Brandon stopped by today to get his trailer and I asked him what he thought of the exhaust note on Big Blue. And, he came to the same conclusion I'd already come to - there's probably a burned valve on the passenger's side and maybe one on the driver's side. So, a leak-down test is in order. And, if that proves the problem, and if I have to pull the intake to re-seal it at the back, I'll pull the heads.
The Ugly:
The Good: Turns out that by disconnecting the hacked-on wiring from the inertia switch and bypassing the inertia switch and the oil pressure switch the fuel pump runs. So, my plans to fix the wiring while waiting on the red/yellow wire to come in are good. In other words, I just have to fix the abominations shown above and I'll be ready to run the wire when it comes in.
Gary, Information only. If you have to remove fuel pump/sending unit you can do it with out lowering tank. I have done many times. With your lift probably two minutes. Rear tank you have to remove tank.
Just for the information, while you are playing with the fuel pump stuff, run a pressure test on both pumps. Spec on factory electric is 4.3 psi. I will almost be willing to bet they put 1987-89 tanks and EFI primary pumps in. I can't find a pressure for the EFI primary pumps, I know they are similar to TBI pumps which are somewhere around 15-17 psi. BTW, I see the problem with the inertia switch "Made in England" probably a Lucas subsidiary.
Original rear tank and plumbing.
Original front tank and plumbing.
1990 front tank with modified 1986 pump and sender hanger, extra lines are the EFI high pressure stuff.<br/>
Jim, red is front pump power, orange is ground. Rear tank pump power is brown/white, orange is still ground. Dark blue/yellow is front sender, black is ground, rear, yellow/light blue is sender, black is ground. All for grounds tie together and go through the plug to G701 which is the one inside the cab on 1986 models.
He has the cure for all that, he just has to shorten the section between the transmission cross member and front tank 35", it is the original harness from Darth.
Just for the information, while you are playing with the fuel pump stuff, run a pressure test on both pumps. Spec on factory electric is 4.3 psi. I will almost be willing to bet they put 1987-89 tanks and EFI primary pumps in. I can't find a pressure for the EFI primary pumps, I know they are similar to TBI pumps which are somewhere around 15-17 psi. BTW, I see the problem with the inertia switch "Made in England" probably a Lucas subsidiary.
Lucas Prince of darkness!
I did see that also and what I thought above.
Dave ----
Joseph Lucas, father of the intermittent wiper. Also the three functions of Lucas lighting, Dim, Flicker and Off. The last one, guy sitting bolt upright in a hospital bed with a look of utter horror on his face, caption reads "What do you mean a Lucas Pacemaker?" However, you know why the English drink warm beer? all their refrigerators are made by Lucas.
I thought you guys would like the pic of the "Made in England" inertia switch. Part of the reason I posted it. And Bill exceeded my expectations.
I think the tank is fairly new, so while I may have to drop it to change out the sender, I don't think it needs coated. As was pointed out, dropping it with the lift is easy - just lower the truck down until the tank sits on the roll-around toolbox, disconnect the tank, and raise the truck.
And, it may well have a serious pump in it. When running a full 12 volts it has enough volume to easily hold 5.5 psi at the regulator after the vapor separator. In fact, I jumpered the inertia switch with my test light made from an 1156 bulb and that ran the pump well enough to hold 1.5 psi after the vapor separator. Maybe I'll crank it up tomorrow and see what it'll do.
As for the wiring, Jim is right that things need attention. But, Bill sent me a replacement harness, so I'll put that in and not have to worry about splicing things. Thanks again, Bill!
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