84 Elan V8 fuel pump not in tank? June 11, 2008, 11:41:33 AM Is this rare? The 84 V8 i pulled apart had an in tank fuel pump, build date 4/84My 84 V8 fuel pump is under the car by the filter. Build date 9/83..Were all 83 birds fuel pumps under the chassis as well and beggining year 84 in the tank?If so can I use a regular pump? Quote Selected
84 Elan V8 fuel pump not in tank? Reply #1 – June 11, 2008, 02:15:17 PM '83 and '84 cars for the most part had TWO pumps. A lift pump (in tank) and a pressure pump (frame rail next to filter). Both of the '84s that I had were like this (2.3T and 5.0) so I've assumed that all 83-84 cars are this way. In theory you could bypass the frame rail pump and buy an in-tank for an 85+ car and still make adequate pressure. Quote Selected
84 Elan V8 fuel pump not in tank? Reply #2 – June 11, 2008, 07:41:59 PM Is there any power loss with the setup I have? I have not had my tank down yet but I believe there is no pump in there, If I unplug the framerail pump, I cannot hear anything in the tank power up when I turn on the ignition... P.S. I have a 1991 Mustang 5.0 with the EFI conversion so I believe this setup demands more fuel. If I look for a replacement pump, can I use an in tank style or am I screwed? Quote Selected
84 Elan V8 fuel pump not in tank? Reply #3 – June 11, 2008, 09:45:27 PM Not 100% on what you can put in but you can always at least switch to a newer style tank. Quote Selected
84 Elan V8 fuel pump not in tank? Reply #4 – June 11, 2008, 10:40:01 PM There is an in-tank pump. If you aren't hearing anything, then it is dead. ALL 83-early 85 cars had 2 pumps. The LP lift pump in the tank and the HP pump on the frame rail.If you had an older car that just has a HP intank pump (and no in-line pump), it was converted. Quote Selected
84 Elan V8 fuel pump not in tank? Reply #5 – June 11, 2008, 11:15:35 PM Wow! I never knew that! If the pump in the tank is dead, would this deem any power loss? Should the car still run like this? Quote Selected
84 Elan V8 fuel pump not in tank? Reply #6 – June 11, 2008, 11:18:35 PM It would put a major strain on the in-line, but yes it would/could still run. Quote Selected
84 Elan V8 fuel pump not in tank? Reply #7 – June 11, 2008, 11:20:11 PM Wow, thanks for the tip Chuck! This is probably killing the pump due to the HO conversion even worse! Quote Selected
84 Elan V8 fuel pump not in tank? Reply #8 – June 12, 2008, 11:05:47 AM Quote from: freakaftr8;223171Wow, thanks for the tip Chuck! This is probably killing the pump due to the HO conversion even worse!Only hurting performance, if it can't maintain 39psi at WOT... Quote Selected
84 Elan V8 fuel pump not in tank? Reply #9 – June 12, 2008, 12:14:24 PM The stock inline pumps aren't self-priming (thus the lift pump in the tank). They are meant to be fed fuel and not have to pull it to them. They can draw fuel from the tank, but they don't like it and when the demands get too high they can have issues. Quote Selected
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