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| EFI Electric fuel pump survey. https://www.slantsix.org/forum/viewtopic.php?t=12716 |
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| Author: | Dartvader [ Fri Apr 22, 2005 6:17 am ] |
| Post subject: | EFI Electric fuel pump survey. |
If you have an electric fuel pump, is your slant EFI, what brand is it, what pressure do you run at, is it quiet, where is it mounted, be specific here, are you happy with it, and do you run a filter in front of the pump. Please include any relevant details not asked for here. Thanks. I hope all take the time to respond. This could be useful info for anyone considering the EFI thing. |
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| Author: | Dartvader [ Sat Apr 23, 2005 5:47 am ] |
| Post subject: | |
OK, I'll start. I'm surprised no one has taken the time to do this. I have an Accel pump for EFI. It is mounted low on the right rear subframe, on the inside, and draws from the stock pickup. I am running a prefilter, and it sounds like Godzilla coming our of the ocean when you first turn the key. I suspect it is having pressure fluctuations, but cannot prove it at this time. It was fairly cheap. I'm going to say around $130 or so. I know there are others cheaper, but there are some that are $500-$800. |
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| Author: | Bob D [ Sat Apr 23, 2005 6:37 am ] |
| Post subject: | |
Vader, I didn't answer this before because I think you know my set-up. It is essentially the same as yours except, as I mentioned in the other thread, I'm using a 3/8" pick-up and 3/8" feed line. The return line is 5/16". Bob D |
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| Author: | Dartvader [ Sat Apr 23, 2005 5:19 pm ] |
| Post subject: | |
Thanks Bob. If we get enough responses here, this thread could become a good search reference for future EFI converters. I'm hoping everyone with EFI will answer the thread. Maybe most of us are still carbureted. |
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| Author: | Pierre [ Sat Apr 23, 2005 11:21 pm ] |
| Post subject: | |
Running a walbro pump that came with the GM based kit from howell efi. Stock 5/16" pickup, running filter before pump as per instructions of howell. How much the pump is new I don't know, $100ish I believe. Mounted on frame just forward of right rear tire. Noisy is really relative so answering that question accurately is tough... I can hear it over the single dynomax super turbo 2 1/4" muffler at idle, but bearly. |
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| Author: | Al T [ Sun Apr 24, 2005 1:43 am ] |
| Post subject: | EFI Details |
Pump: Bosch to 600 HP, pressure output - 40 psi post filter Where: under hood passenger side http://www.projectplato.com/cars/Images ... inebay.jpg Happy?: yes All my details:http://www.projectplato.com/cars/efi.html |
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| Author: | Dartvader [ Sun Apr 24, 2005 5:40 am ] |
| Post subject: | |
Beautiful work, and web site Al T. That post is exactly what this thread needs. Thanks. I currently have a 3/8" high pressure line running all the way from the tank, with the return line being the original 5/16"line. I am thinking I should duplicate your set up, if I can find room under the hood. Does it make sense to switch the 5/16" line back to pick up for the stock mechanical pump, or just leave the 5/16" as the return line, and keep the low pressure supply line at 3/8". It would be simpler just to leave the lines as the are, but I can switch them back by switching where they are connected at the tank. It seems like the return line should have less volume than the supply. What kind of car is Big Red? It has coil springs for the hood, so I know it is not a 67-76 A body. There looks to be more room under the hood. Have you had the engine dyno's? |
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| Author: | Dartvader [ Sun Apr 24, 2005 5:59 am ] |
| Post subject: | |
I went to your home page after asking the question about what kind of car you have. I now see. Thanks. I'll tell you something even more embarassing: I already had your web site on my favorite places list, and hadn;t studied the EFI page! All that info at my finger tips, and I didn;t even know it. Your post redirected my attention to it. Good work, and thanks again. |
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| Author: | Al T [ Tue Apr 26, 2005 7:15 am ] |
| Post subject: | |
Thanks DV - WRT your question on line size, I'd leave them as they are for now until you've answered other questions. You asked about Dyno results: I recall about 170 HP at the rear wheels on the chassis dyno at about 4000 rpm. I should post the curves sometime. |
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| Author: | Matt Cramer [ Fri Jul 29, 2005 8:45 am ] |
| Post subject: | |
Glad I found this thread, as I'm now trying to revive my turbo slant six by putting on a Megasquirt. So are most people using EFI on a slant six also using a surge tank? |
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| Author: | ShivaDart [ Fri Jul 29, 2005 10:06 am ] |
| Post subject: | |
I'm using a Walboro pump(3/8 in and out) with a Russel 40(or 60... can't remember) micron filter in front of it. Very quiet, but I'm also force feeding it Via the fuel cell sitting above it. I had a problem with foam that I had to rip out, it was clogging the pump, but now everything's happy. I'm running my PSI around 40 now(was around 50, but now I can run it at 40). I'm not using a surge tank, I prefer the simplicity of the closed loop system. I do need to figure out a way to baffle my tank now... foam is evil... I was reading an Aeromotive website tech article and it's suggestion for a filter before the pump was one that filters 100 Microns and had a surface around of something like 60 square inches, otherwise pump cavatation can happen(this is off memory, so forgive me if the details aren't quite right). Pump cavation, if I remember correctly, was basically a bubble forming before the pump, starving it, and creating a super heated area before the pump. This gives the pump a double whammy of starving of fuel and getting burnt. Aeromotive's stance was either run no filter or follow their recommendations(the recommendations were for their pumps, but I see no reason why it wouldn't be fairly universal). They did give a P/N, but... I looked at it and it's inlets and outlets were something like -12 AN, that would take quite a few expensive adapters to cut down to the -6AN pieces the rest of my system's running, and fitment wouldn't be fun. |
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| Author: | GunPilot [ Tue Aug 02, 2005 1:33 pm ] |
| Post subject: | |
Well, it's not a slant, but I'm going to do my slant, and I already did my Ramcharger. The thread is here: http://ramchargercentral.com/boards/ind ... 25;start=0 Fuel pump is an Aeromotive, about $180 from Summitt, 15 PSI. I used the stock steel line up to the TBI, removed the mechanical pump and blocked it off. I have a regular (low pressure) fuel filter ahead of the high pressure pump, and a HP one after it. I also built a surge tank (some call it a swirl pot) - see the thread. This uses a low-pressure Facet pump to keep the surge tank full, and takes the return from the TBI. Return line is 1/4 fuel line. All rubber line is FI hose ($) . The HP pump is incredibly noisy, even more so before I rubber-mounted it. The two of them together will shake the mud off the truck. Explains why the OEMS put them in the fuel tank I guess. It's all mounted on the right rear inside frame rail ahead of the tank. I originally had it mounted underneath the bed (see thread) but that made the steel bed into a sounding board, and caused car alarms to activate and dogs to bark. One useful side effect of all the noise is I can tell a few seconds ahead of time when I'm out of gas. I have almost a year on this system with no problems. |
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