Whyjay
Member
An option for the fuel pump is one of these adapters.
Help with stock EFI
- Thread starter Truckie
- Start date
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I like this idea and am going to give it a try. Are there any clearance issues between the pump and the trunk floor?
TT5.9mag
Two atmospheres are better than one
Yes. It required some creative hammering on my car. 72 dart. Your results may vary.
robcuda
Well-Known Member
Just curious, approx how much pounding? Approx an inch?
TT5.9mag
Two atmospheres are better than one
Yea maybe about that on a stock trunk pan. Mine was hacked up when I got it so I don’t have a great reference really. But the FPR sits about 1-1/2” off the top of the tank if that helps.
robcuda
Well-Known Member
Thanks for the info. Not trying to hijack but maybe would give Truckie ideas too...What did you do for flange? Tabs or cut out from a stock tank? Did you make a custom gasket, cork or rubber? How did it hold up re leaks when tank full? Thanks in advance.
TT5.9mag
Two atmospheres are better than one
I wish I took more pictures, sorry I didn’t. I cut a flange a little larger than the hole, same size as the diameter of the mounting flange on the fuel pump. Drilled holes (3) in the flange, and the tank, pushed the studs up through the flange and the tank and welded them in place. The tabs on the top are held in place with nuts and sandwich the tank between the flange and the pump. The gasket I cut from thin rubber gasket material I got from McMaster Carr. Can’t remember the thickness I used. Zero problems with leaks ever. Hope that helps.
Can you describe what you had to do to the telescopic part to make it work?
TT5.9mag
Two atmospheres are better than one
I could tell you but then I’d have to kill you. It’s top secret.
Really I don’t remember I did it so long ago. But just for you I’ll pull the fuel tank out from under my bench on Monday and take the pump out of it and snap some pics.
I greatly appreciate it.I could tell you but then I’d have to kill you. It’s top secret.
Really I don’t remember I did it so long ago. But just for you I’ll pull the fuel tank out from under my bench on Monday and take the pump out of it and snap some pics.
TT5.9mag
Two atmospheres are better than one
Ok @Truckie sorry it took a few days. Here are some pics of my modified sending unit. I did this in about 2012 so i really didn’t remember much about doing it and this has jogged my memory. It’s pretty clear that I cut and shortened the top portion of the outer “sleeve” to the depth of the stock tank and the “inner” sleeve is just a slight press fit in to it. The bottom of the sending unit lightly bottoms on the tank floor (that’s how it’s designed to sit) and once bolted in at the top has no way of coming apart. Hopefully that will make sense once you see the pictures. I bought this new from NAPA so I added their inventory pics for reference.
Thanks that definitely helps. I pulled the pump out of the donor so I will modify it first so if I screw up I’m not out any money.
Did you make any kind of ring to go inside the tank for the bolts to pass through to make the hole in the tank more rigid?
TT5.9mag
Two atmospheres are better than one
I made a flange. I posted above ^ how I did it.
robcuda
Well-Known Member
If you're going stock efi, grab the pedal and it's connected cable from same year donor vehicle. It'll snap right into the throttle body. Drill some new holes for the pedal mount in your floor/wall and run cable to throttle body. If the bend of cable isn't proper you may need shorter or longer cable from different model (van vs truck, etc). I'm going through this now to see if I can get a better loop around the manifold.
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dusted
Well-Known Member
Why not just buy the Holley drop in fuel pump assembly. It’s designed for the new hemi swap parts they make. Holley Sniper EFI 12-319 Holley 255 LPH OE Style EFI Fuel Tank Modules
$350 vs $0 is my reason.
I got my fuel pump modified and the hole in my tank. I made the hike so the original rubber gasket fits in it nicely. I was wondering, the original pump had openings in the side that I’m assuming were to let fuel in to cool the pump. Is is necessary to put a few holes in the side, just below where the two pieces come together?
TT5.9mag
Two atmospheres are better than one
Necessary? I don’t think so for three reasons, one mine ran flawlessly. Two if you’ll notice the return fuel is fed right down the middle of the sending unit filling it while at anything but full throttle. Idle there is lots of return fuel, WOT there is not so much. Three, it’s submerged in fuel and not a sealed unit so it fills up anyway.
Here’s some pics. First is the modified pump. Second shows (kinda) the stock gasket. Fits pretty snug once pump is all the way in. The others show the flanges I’m working on. The one with slit will have threaded holes that I will run stainless bolts with rubber washers through. It will go inside the tank with a rubber gasket. The other ring will hold the pump down. Trying to decide how many bolts to use. I was thinking about 7, but the more holes the more chance of leaking.
Thanks. I think it was you that mentioned before about getting me a picture of how to wire the key to the new wiring. I think you said you had something set up on an engine run stand. Any chance you can tell me what I need to do to fire this thing up?
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