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EFI Gas tank options for handling? #1274279 07/26/12 04:09 AM 07/26/12 04:09 AM
Joined: Jun 2003 Posts: 1,212 M moparAL OP pro stock
moparAL OP pro stock M Joined: Jun 2003 Posts: 1,212	Please don't re-list my post in another section. What options are available for a baffled gas tank for a 70 EFI Challenger. I have looked at ads from Rock Valley, Ricks gas tanks, Modern Muscle, Hot-rod City, XV Motorsports, and others. I am setting up my car to handle well and don't want to worry about fuel starvation going around corners. I have read some Chevy forms about this and most like Ricks stainless tanks (vapor works version with 2 fuel pick ups) great idea, but silly expensive. Mopar guys that autocross what ways have you dealt with this issue? I need a new tank anyway so what do you suggest?

Re: EFI Gas tank options? [Re: moparAL] #1274280 07/26/12 04:46 AM 07/26/12 04:46 AM
Joined: Dec 2003 Posts: 22,696 Bitopia J jcc If you can't dazzle em with diamonds..
jcc If you can't dazzle em with diamonds.. J Joined: Dec 2003 Posts: 22,696 Bitopia	The simplest and least expensive option is use any tank full, if extra weight is an issue, use a smaller full tank, most other options that allow you to run from a full tank down to The last drop use internal trap door sumps and cost a few bucks. Whats your intended use? Last edited by jcc; 07/26/12 09:41 AM. Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.

Re: EFI Gas tank options? [Re: moparAL] #1274281 07/26/12 08:42 AM 07/26/12 08:42 AM
Joined: Aug 2003 Posts: 11,179 Atco NJ DJVCuda I Live Here
DJVCuda I Live Here Joined: Aug 2003 Posts: 11,179 Atco NJ	mine is just a street car, but after researching a few the hot rod one needs a new sending unit, filler tube adapted, etc. The rock valley unit was a bolt in deal, that added a spiral around the pump = I have driven it under 1/8th of a tank and cant get it to starve - i doubt you could sustain corners for an extended amount of time but i;ve been completely happy with my purchase.

Re: EFI Gas tank options? [Re: DJVCuda] #1274282 07/26/12 08:42 AM 07/26/12 08:42 AM
Joined: Jan 2003 Posts: 305 East Tennessee B Burkenator enthusiast
Burkenator enthusiast B Joined: Jan 2003 Posts: 305 East Tennessee	Rock Valley as well. Works great. 7308375-tankbefore.JPG (492 downloads)

Re: EFI Gas tank options? [Re: Burkenator] #1274283 07/26/12 01:01 PM 07/26/12 01:01 PM
Joined: Jun 2003 Posts: 1,212 M moparAL OP pro stock
moparAL OP pro stock M Joined: Jun 2003 Posts: 1,212	This is the type of feedback I am looking for. Yes, the cheapest solution is to run close to a full tank. If I get down to say 1/8 of a tank and I don't want fuel starvation I want to be prepared. There are several members that run auto cross and a ton members that drag race what do you do with regards to fuel starvation? Steve, Autoxcuda any thoughts?

Re: EFI Gas tank options? [Re: moparAL] #1274284 07/26/12 01:16 PM 07/26/12 01:16 PM
Joined: Feb 2006 Posts: 81 Michigan Truck Y'all ! member
Truck Y'all ! member Joined: Feb 2006 Posts: 81 Michigan	Here's what I did in my '68 A-body (Valiant). Just submitting this for reference... I found a huge (32 Gallons!) Jaz fuel cell that would fit between frame rails and went for it. This way, I could run just a little bit of fuel or a full tank for touring and be all set. Here's the one I used: "PART # 286-432-06 Designed to fit between the frame rails of 1984-2001 Jeep Cherokees. 32 Gallon fuel cell with a 45 degree 2-1/2" Fill Valve and Oval Fill Plate. Also includes cast aluminum Bat Wing pick-up, -10 Tip Over vent, -8 Return Fitting and -8 Pick-up. This fuel cell is also foam filled. Great for Truck Pre-Runners!"

Re: EFI Gas tank options? [Re: moparAL] #1274285 07/26/12 01:18 PM 07/26/12 01:18 PM
Joined: Jan 2003 Posts: 1,938 Sonora CA Mopar_Rich top fuel
Mopar_Rich top fuel Joined: Jan 2003 Posts: 1,938 Sonora CA	When I sell EFI systems to the "rock crawler" guys they have the same problem, only worse, because they can sit at weird angles for a long time. So the ultimate solution, that's also fairly inexpensive, is to use a tall narrow intermediate tank. This approach allows you to keep the stock tank since it only used as a reservoir. One local guy fit the intermediate tank in the front of his trunk. He can now run down to the last drop while sitting at a 45 degree angle. 7308670-IntermediateEFISumpapproach.JPG (382 downloads)

Re: EFI Gas tank options? [Re: moparAL] #1274286 07/26/12 01:24 PM 07/26/12 01:24 PM
Joined: Jan 2010 Posts: 1,442 NW Chicago suburban area Mopar Mitch pro stock
Mopar Mitch pro stock Joined: Jan 2010 Posts: 1,442 NW Chicago suburban area	I've autocrossed my Chall T/A since 1975 in the SCCA Solo II events... car is currently nationally prepared to run in class E/Street Prepared (since its class inception ~1986). Although I've always run a mechanical fuel pump, I've never had any fuel starvation problems.. In fact, I've always preferred to run the auto-x events with as little weight as possible... typically starting the event's day with about 1/3 tank of gas... ending up with about 1/8 tank... tank is factory stock. One note -- if you run a Challenger with more than 1/2 tank of gas, or worse with a full tank, you'll not only have all that extra weight (bad!) but the fuel will probably spill out of the side-filler onto the quarter panels unless you have a very good sealing gas cap, and perhaps wrapped with small cloth soak to it up.... The g-force in such events can be pretty high to force the fuel up the filler and beyond the gas cap... from my experience! Mopar Mitch "Road racers and autocrossers go in deeper and come out harder!"... and rain never stops us from having fun with our cars... in fact, it makes us better drivers! Check out MOPAR ACTION MAGAZINE, August 2006 issue for feature article and specs on my autocross T/A!

Re: EFI Gas tank options? [Re: Mopar Mitch] #1274287 07/26/12 01:33 PM 07/26/12 01:33 PM
Joined: Aug 2003 Posts: 11,179 Atco NJ DJVCuda I Live Here
DJVCuda I Live Here Joined: Aug 2003 Posts: 11,179 Atco NJ	it has been my experience that the carb'd motors will not show fuel starvation for brief moments, like going around corners. a cab has two fuel bowls for reserve in that instance where the pickup cannot get the fuel to the pump - EFI has no such " reserve" the second the pump has no pressure, the injectors have no pressure as well - no pressure and they do not supply the engine with fuel - it is more instantaneous then with a carb.

Re: EFI Gas tank options? [Re: Mopar Mitch] #1274288 07/26/12 01:35 PM 07/26/12 01:35 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Quote: I've autocrossed my Chall T/A since 1975 in the SCCA Solo II events... car is currently nationally prepared to run in class E/Street Prepared (since its class inception ~1986). Although I've always run a mechanical fuel pump, I've never had any fuel starvation problems.. In fact, I've always preferred to run the auto-x events with as little weight as possible... typically starting the event's day with about 1/3 tank of gas... ending up with about 1/8 tank... tank is factory stock. One note -- if you run a Challenger with more than 1/2 tank of gas, or worse with a full tank, you'll not only have all that extra weight (bad!) but the fuel will probably spill out of the side-filler onto the quarter panels unless you have a very good sealing gas cap, and perhaps wrapped with small cloth soak to it up.... The g-force in such events can be pretty high to force the fuel up the filler and beyond the gas cap... from my experience! Your Challenger is obviously not fuel injected, I suspect you missed that difference between your setup and the op's. When I FI'd my Diplomat the in tank pump would suck air at anything under a half tank if I drove it hard. Under a quarter tank it would suck air in almost any turn at any speed above grandma speed. Same basic tank design. My solution was a small surge tank fed by the mechanical pump, the surge tank would feed the EFI pump. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: EFI Gas tank options? [Re: Supercuda] #1274289 07/26/12 04:04 PM 07/26/12 04:04 PM
Joined: Feb 2011 Posts: 4,302 Nebraska 72Swinger master
72Swinger master Joined: Feb 2011 Posts: 4,302 Nebraska	I installed one of these at the rear of my aluminum boat tank in my car. And I used a Walbro GSS340 inside of it mounted to one of these.. http://www.tanksinc.com/index.cfm/page/p...prod/prd253.htm and it has so far been flawless. 7308863-019.JPG (373 downloads) Last edited by 72Swinger; 07/26/12 04:06 PM. Mopar to the bone!!!

Re: EFI Gas tank options? [Re: Mopar_Rich] #1274290 07/26/12 04:50 PM 07/26/12 04:50 PM
Joined: Jan 2009 Posts: 813 Ontario,Canada brads70 super stock
brads70 super stock Joined: Jan 2009 Posts: 813 Ontario,Canada	Quote: When I sell EFI systems to the "rock crawler" guys they have the same problem, only worse, because they can sit at weird angles for a long time. So the ultimate solution, that's also fairly inexpensive, is to use a tall narrow intermediate tank. This approach allows you to keep the stock tank since it only used as a reservoir. One local guy fit the intermediate tank in the front of his trunk. He can now run down to the last drop while sitting at a 45 degree angle. Same idea as this! http://www.ratdat.com/?p=168

Re: EFI Gas tank options? [Re: brads70] #1274291 07/27/12 10:39 PM 07/27/12 10:39 PM
Joined: Jan 2007 Posts: 7,664 IN A ahy master
ahy master A Joined: Jan 2007 Posts: 7,664 IN	Quote: Quote: When I sell EFI systems to the "rock crawler" guys they have the same problem, only worse, because they can sit at weird angles for a long time. So the ultimate solution, that's also fairly inexpensive, is to use a tall narrow intermediate tank. This approach allows you to keep the stock tank since it only used as a reservoir. One local guy fit the intermediate tank in the front of his trunk. He can now run down to the last drop while sitting at a 45 degree angle. Same idea as this! http://www.ratdat.com/?p=168 Nice way to make a sump! I run "in tank" on my hotrod but am planning a sump on another project. I will likley use the CO2 tank starting point.

Re: EFI Gas tank options? [Re: ahy] #1274292 07/28/12 01:20 PM 07/28/12 01:20 PM
Joined: May 2005 Posts: 723 Houston Tx Uhcoog1 super stock
Uhcoog1 super stock Joined: May 2005 Posts: 723 Houston Tx	Here is my set-up. Carter for lift pump, BC Bronco's surge tank fuel filter, and Walbro GSL392. There is a Wix 33737 filter/regulator not in the picture. Here is the BC Bronco's link: http://www.bcbroncos.com/store/product_info.php?products_id=119 -'02 Dodge Viper Ex-World Challenge racecar -'73 Duster, 6.1 based 392 hilborn hemi, tko600, full floater rear 9", Hellwig custom bars, viper brakes, built for road course

Re: EFI Gas tank options? [Re: 72Swinger] #1274293 07/28/12 01:22 PM 07/28/12 01:22 PM
Joined: May 2005 Posts: 723 Houston Tx Uhcoog1 super stock
Uhcoog1 super stock Joined: May 2005 Posts: 723 Houston Tx	Quote: I installed one of these at the rear of my aluminum boat tank in my car. And I used a Walbro GSS340 inside of it mounted to one of these.. http://www.tanksinc.com/index.cfm/page/p...prod/prd253.htm and it has so far been flawless. Where did you get this? That's a nice set-up! -'02 Dodge Viper Ex-World Challenge racecar -'73 Duster, 6.1 based 392 hilborn hemi, tko600, full floater rear 9", Hellwig custom bars, viper brakes, built for road course

Re: EFI Gas tank options? [Re: Uhcoog1] #1274294 07/28/12 05:11 PM 07/28/12 05:11 PM
Joined: Feb 2011 Posts: 4,302 Nebraska 72Swinger master
72Swinger master Joined: Feb 2011 Posts: 4,302 Nebraska	I got the trap doors from Fuel Safe and had the box made out of aluminum. Your setup should work good too with that big filter. I wanted a bigger tank anyway,mine is now 25 gal,and knew an access door with an in tank pump was always the plan so thats why I chose the route I did. Mopar to the bone!!!

Re: EFI Gas tank options? [Re: 72Swinger] #1274295 07/30/12 03:34 PM 07/30/12 03:34 PM
Joined: Jun 2003 Posts: 1,212 M moparAL OP pro stock
moparAL OP pro stock M Joined: Jun 2003 Posts: 1,212	Hotrod City Garage has a interesting aluminum EFI tank. It has a lower sump (1 inch lower) at the bottom front of the tank, a internal perforated 5 inch tall open box surrounding the pickup, and internal front and side baffling. They have a choice of pumps, and a drain plug option. What do you think? Picture 1 7313906-6759656-100_2143.jpg (345 downloads) Last edited by moparAL; 08/04/12 01:09 PM.

Re: EFI Gas tank options? [Re: moparAL] #1274296 07/30/12 03:36 PM 07/30/12 03:36 PM
Joined: Jun 2003 Posts: 1,212 M moparAL OP pro stock
moparAL OP pro stock M Joined: Jun 2003 Posts: 1,212	Hotrod City Garage gas tank (right picture), picture 2 7313907-h8.jpg (368 downloads)

Re: EFI Gas tank options? [Re: moparAL] #1274297 07/30/12 03:45 PM 07/30/12 03:45 PM
Joined: Feb 2011 Posts: 4,302 Nebraska 72Swinger master
72Swinger master Joined: Feb 2011 Posts: 4,302 Nebraska	Those are nice and are a bolt in option. They were more $$$ than I had available when the time came for my fuel setup. Mopar to the bone!!!

Re: EFI Gas tank options? [Re: 72Swinger] #1274298 07/31/12 02:00 AM 07/31/12 02:00 AM
Joined: Jun 2003 Posts: 1,212 M moparAL OP pro stock
moparAL OP pro stock M Joined: Jun 2003 Posts: 1,212	Hotrod city garage gas tank picture 3 7314782-42979219.jpg (486 downloads)

Re: EFI Gas tank options? [Re: moparAL] #1274299 07/31/12 02:04 AM 07/31/12 02:04 AM
Joined: Jun 2003 Posts: 1,212 M moparAL OP pro stock
moparAL OP pro stock M Joined: Jun 2003 Posts: 1,212	Hotrod city garage, picture 4, of internal baffling. I don't think going to a external efi sump tank in California is legal. I don't want to go with a fuel cell either. This had a lot of features that some of the real big buck tanks have and are cheaper. It is also is made of aluminum. What issues, if any, might a aluminum tank might have? Any more thoughts about this tank? 7314786-38726509.jpg (191 downloads)

Re: EFI Gas tank options? [Re: moparAL] #1274300 08/12/12 04:00 PM 08/12/12 04:00 PM
Joined: Feb 2003 Posts: 21,318 Manitoba, Canada DaytonaTurbo Too Many Posts
DaytonaTurbo Too Many Posts Joined: Feb 2003 Posts: 21,318 Manitoba, Canada	How about buying a new stock tank, cutting a big access hole in the top and welding in a bowl shaped baffle/sump around the area where the stock fuel pickup draws it's fuel from? After you weld the top back on the tank it would look bone stock from the outside. You would of course need to run an external in-line EFI pump but overall this looks like the most straightforward option to me.

Re: EFI Gas tank options for handling? [Re: moparAL] #1274301 08/18/12 03:39 PM 08/18/12 03:39 PM
Joined: Sep 2003 Posts: 1,688 Marlboro, NY, USA R Rick_Ehrenberg top fuel
Rick_Ehrenberg top fuel R Joined: Sep 2003 Posts: 1,688 Marlboro, NY, USA	Not that I've done this (except in my fantasies...), but: Stock Mopar '90s-'00s pumps are 2-stage, keeping a reservoir filled ('prox 3 qts.) then pumping pressure from that. If only there were an easy way to mount one of these in a muscle-era tank, we'd be set! Ideas...? Rick

Re: EFI Gas tank options? [Re: DaytonaTurbo] #1274302 08/22/12 12:28 PM 08/22/12 12:28 PM
Joined: Mar 2006 Posts: 49 Borden, Indiana, U.S.A. W wrenchinrandy member
wrenchinrandy member W Joined: Mar 2006 Posts: 49 Borden, Indiana, U.S.A.	That is exactly what I did on my '67 Charger. I used two common bread pans for internal sump boxes (I have dual pumps) and installed trap doors on the all four sides. In practice, I should have fabricated boxes with much taller sides, as at a quarter tank it will starve for fuel pretty readily. However, the basic idea of modifying a stock tank has worked very well. I used JIC (37 degree flare = AN) bulkhead fittings with seals and wire passthrough fittings obtained from ATL for elctrical and fuel line plumbing.

Re: EFI Gas tank options? [Re: wrenchinrandy] #1274303 08/22/12 02:41 PM 08/22/12 02:41 PM
Joined: Jun 2003 Posts: 1,212 M moparAL OP pro stock
moparAL OP pro stock M Joined: Jun 2003 Posts: 1,212	I appreciate all the ideas, but other than Ricks idea (which no one has done with a older Mopar tank yet), the small external sump tank, double pump system, I haven't seen a reasonable priced system and I would not use that on the street! With all the Auto X members I thought you would have solved this issue. Ricks tanks has this tank called a Vaporworx tank. It is stainless inside and out, lots of baffling, and get this multiple fuel pickups. In the Vaporworx ad Mary Pozzi (Auto x driver) tested this tank with much success. But it is stupid, silly, crazy, expensive! 7345989-vaporworxgastanks.jpg (804 downloads)

Re: EFI Gas tank options for handling? [Re: moparAL] #2785747 06/15/20 02:54 PM 06/15/20 02:54 PM
Joined: Jul 2003 Posts: 898 Georgia 72440CUDA super stock
72440CUDA super stock Joined: Jul 2003 Posts: 898 Georgia	I wanted to re-visit this post instead of starting a new one (I don't mean to hijack). What is everyone using for a vent system? I currently have a Hot Rod City Garage aluminum baffled tank (now out of business?) with an external electric fuel pump. I originally had a vent line routed into the frame rail and it just pissed fuel out (NOT GOOD!) So for the mean time, I've just capped it off (not good either!). I've been doing some research... want an operating vent as to not cavitate/blow out tank seams with sealed filler cap so it doesn't spill fuel out the back, and I don't want the garage to fill with fumes. Current plan is to run a vertically mounted in-line roll over valve to a II Much vent mounted in the truck (under the package tray?) at a level higher than the filler neck, with the inlet/outlet mounted externally. Other option is to run a Newton TPV6 valve. Should have about $300 tied into it when all said and done. Thoughts? Last edited by 72440CUDA; 06/15/20 03:08 PM.

Re: EFI Gas tank options for handling? [Re: 72440CUDA] #2785824 06/15/20 07:29 PM 06/15/20 07:29 PM
Joined: Jan 2003 Posts: 30,995 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 30,995 Oregon	I'm not familiar with the Newton setup. I have seen the II Much vent system before. I think the key is what II Much has in their instructions about having a 10% volume vapor dome in the tank. Your custom built tank might not have been equipped with a vapor dome. I've run into this same problem when using fuel cells in a passenger car. The typical fuel cell doesn't have a vapor dome so if the fuel cell is full it will push fuel out the vent on a hot day. The chassis builder I work with has used expansions tanks in the past to solve the issue. I'm a little surprised that the fuel cell mfgs haven't figured out a solution. The shop that fabricated your tank should've had some sort of vapor solution but if they didn't you'll have to work around it. Take a look at your tank design and see if there is any sort of a vapor dome or if the tank can be filled to the brim with no space left for expansion. If that is the case you might need to add an expansion tank for the vapor and then hook the vent into the expansion tank.

Re: EFI Gas tank options for handling? [Re: 72440CUDA] #2786047 06/16/20 03:00 PM 06/16/20 03:00 PM
Joined: Jan 2003 Posts: 30,995 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 30,995 Oregon	Boyd welding has a slick little adapter plate that allows you to use a factory Ford vent on a custom tank. You could use the Boyd vent plate on a custom expansion tank. Build a one gallon expansion tank and plumb it to the existing vent on your tank and then use the Ford vent on the expansion tank. Or if your existing tank has a vapor dome in it then you could use the Ford vent right in the vapor dome. https://fueltankparts.com/collectio...ucts/ford-oem-vent-weld-in-bung-aluminum Last edited by AndyF; 06/16/20 03:03 PM.

Re: EFI Gas tank options for handling? [Re: AndyF] #2786702 06/18/20 09:10 AM 06/18/20 09:10 AM
Joined: Jul 2003 Posts: 898 Georgia 72440CUDA super stock
72440CUDA super stock Joined: Jul 2003 Posts: 898 Georgia	Thanks for the advice, definitely something to consider My tank doesn't have a vapor dome, just (if I remember correctly) a 1/4" NTP vent bung on the side at the top left corner. I was looking at something like this overflow tank to help with expansion: https://www.jegs.com/i/JEGS/555/51145/10002/-1 Possibly mount at an incline up between the two rear shock mounts, or vertically in the truck followed by an in-line rollover valve (mounted straight up and down) thinking it will help with fuel slosh (weight of the fuel pushing against a check ball) but still allow fumes to vent and air to enter as the fuel is consumed. Finally, having the vent line run up into the trunk as high up as I can get it (under package tray, above the level of the filler cap) and then back down terminating under the trunk to some type of filter, all the while making sure there isn't a low spot that could collect fuel and act as a "trap" that would cause the system to burp.

Re: EFI Gas tank options for handling? [Re: moparAL] #2786784 06/18/20 12:51 PM 06/18/20 12:51 PM
Joined: Jan 2003 Posts: 24,562 Brookeville, Md Mr.Yuck Not enough dumb comments...yet
Mr.Yuck Not enough dumb comments...yet Joined: Jan 2003 Posts: 24,562 Brookeville, Md	Hydromat or a swinging pick-up. [IMG]http://i66.tinypic.com/pui5j.jpg[/IMG] Coming soon!!!!

Re: EFI Gas tank options for handling? [Re: 72440CUDA] #2786847 06/18/20 02:44 PM 06/18/20 02:44 PM
Joined: Jan 2003 Posts: 30,995 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 30,995 Oregon	If the tank doesn't have a vapor dome then you will just have to remember to not fill it full. Or only fill it full when you are driving somewhere. The gas comes out of the ground tank at 60 degrees so on a hot day the gas will expand once it gets into the tank. Without an expansion tank the gas will just push out the vent. I ran into this same issue when I had a fuel cell in a race car. The fuel cell was just a box with no expansion area. I filled it up on a cool day and then on the next hot day I had a mess when gas started to push out the vent tube.

Re: EFI Gas tank options? [Re: moparAL] #2787929 06/21/20 10:42 PM 06/21/20 10:42 PM
Joined: Nov 2008 Posts: 1,491 Lethbridge, AB, Canada dangina pro stock
dangina pro stock Joined: Nov 2008 Posts: 1,491 Lethbridge, AB, Canada	Originally Posted by moparAL Hotrod city garage, picture 4, of internal baffling. I don't think going to a external efi sump tank in California is legal. I don't want to go with a fuel cell either. This had a lot of features that some of the real big buck tanks have and are cheaper. It is also is made of aluminum. What issues, if any, might a aluminum tank might have? Any more thoughts about this tank? hope i'm not too late for ya - i have one - first the seal leaked as they used the wrong seal for gas (go figure) - would not send me a new one - had to make one up from the local parts store and cut out my own gasket - then had nothing but fuel issues spilling out of the tank - problem is the fuel pump is below the the top of the tank so it always wants to siphon - I had to weld a bung on top of the tank and on the filler neck and install a one way valve in it and add a seperate air vent with a filter on it - the tank is cheap and for these reasons...I bought through some one else (mopardan?) but it was built by hotrodcity garage I should also mention I used a hydromat when I last took out the pump Last edited by dangina; 06/21/20 10:44 PM.

Re: EFI Gas tank options? [Re: dangina] #2789951 06/27/20 04:40 PM 06/27/20 04:40 PM
Joined: Jan 2010 Posts: 667 Los Osos, Ca C CKessel mopar
CKessel mopar C Joined: Jan 2010 Posts: 667 Los Osos, Ca	Anybody given any thought to using an evap cystem from a late model vehicle, say 2000 and newer? Carl Kessel

Re: EFI Gas tank options? [Re: CKessel] #2789967 06/27/20 04:59 PM 06/27/20 04:59 PM
Joined: Jan 2003 Posts: 30,995 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 30,995 Oregon	Yes I've thought of that a few times. I even researched some of the parts needed. The link I posted above is one solution since it provides a weld in bung for a late model evap system valve. I was going to go this way on the tank I'm building for my Duster but I ended up going mostly old school with a large vent crossover tube and then a couple of small vacuum line breathers.

Re: EFI Gas tank options? [Re: AndyF] #2790292 06/28/20 12:58 PM 06/28/20 12:58 PM
Joined: Jan 2010 Posts: 667 Los Osos, Ca C CKessel mopar
CKessel mopar C Joined: Jan 2010 Posts: 667 Los Osos, Ca	I'm going to check out the components that GM uses for their E-ROD packages. Since those are a retrofit to older chassis, that may be an easy route to take. Carl Kessel

Re: EFI Gas tank options? [Re: CKessel] #2791886 07/02/20 11:26 AM 07/02/20 11:26 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	I use to design fuel tanks and tested them.. the first EFI car was the Imperial the group that did the injection didnt pay any attention to being low on fuel.. once they seen this issue we were given the project to fix it.. after a few weaks we came up with a can inside the tank.. over time we came up with a plastic reservoir in ALL production cars and trucks... still in all.. we called it a swirl can that would use the return fuel to keep the can full.. the pump is inside the can and will drain the tank to about 250 cc or less.. just look at the inside of a newer car or truck EDIT I also did a few company road race sponsored tanks.. they use to have a issue of running out of fuel so we put 4 pick ups in the tanks we built(one in each corner) being that these were carb system they never had a problem.. these tanks HAD to look like a production part.. we had to seam weld the seams on them Last edited by MR_P_BODY; 07/02/20 11:32 AM.

Re: EFI Gas tank options for handling? [Re: moparAL] #2793639 07/06/20 08:18 PM 07/06/20 08:18 PM
Joined: Jan 2003 Posts: 30,995 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 30,995 Oregon	I'm in the process of having a custom tank built for my Duster. The Duster is more of a Pro Street car than a road racer or an autocrosser but some of the same ideas would work. I'd use the same design for a road race car if I was building one of them. I decided to go with a 20 gallon tank so I could extend the cruising range a bit. I'm mounting the tank on the shelf between the wheel tubs to free up some trunk space. I'm going to have a set of baffles welded inside the tank to reduce slosh, and I'm having them put a 1 gallon sump in the rear corner of the tank. The Holley EFI pump will be slightly modified so it will drop down into the sump. I'm also working on a vent design that should work properly in all conditions. What I've found is that most fuel cells do not have a good vent design. They just stick a roll over valve in one corner even though that design will not work with a full tank or when the car is sloshing fuel into that corner. Here are a couple of mock up photos.

Re: EFI Gas tank options for handling? [Re: AndyF] #2796402 07/14/20 08:48 AM 07/14/20 08:48 AM
Joined: Jul 2003 Posts: 898 Georgia 72440CUDA super stock
72440CUDA super stock Joined: Jul 2003 Posts: 898 Georgia	Quote If the tank doesn't have a vapor dome then you will just have to remember to not fill it full. Or only fill it full when you are driving somewhere. The gas comes out of the ground tank at 60 degrees so on a hot day the gas will expand once it gets into the tank. Without an expansion tank the gas will just push out the vent. I ran into this same issue when I had a fuel cell in a race car. The fuel cell was just a box with no expansion area. I filled it up on a cool day and then on the next hot day I had a mess when gas started to push out the vent tube. This is what I’ve come up with to solve my vent issue. 1 gal fuel cell with built in roll over valve, plumbed using -6an PTFE hose. Should provide some sort of expansion for the fuel coming out the main tank vent port. Mounted on top it the IIMuch vent system. The vent system will then route to a sintered filter mounted to a bulkhead fitting. I haven’t finished mounting the 1gal cell yet but you get the idea. I’ve used body plugs as I didn’t want to drill any unnecessary holes in the trunk. Trunk will eventually be finished with removable panels. The IIMuch system came with a stick on thermometer that I mounted to my fuel tank and it definitely shows how hot my fuel tank gets here in Southern Georgia. [img]http://[/img] Last edited by 72440CUDA; 07/14/20 08:56 AM.

Re: EFI Gas tank options for handling? [Re: 72440CUDA] #2796791 07/15/20 01:10 AM 07/15/20 01:10 AM
Joined: Jan 2003 Posts: 30,995 Oregon A AndyF I Win
AndyF I Win A Joined: Jan 2003 Posts: 30,995 Oregon	Here are some pictures of the tank I'm building for my Duster. I started with a cheap fuel cell from Summit and then cut the lid off and installed baffles and a sump. I also have a vent system that I'm installing.

Re: EFI Gas tank options for handling? [Re: Mr.Yuck] #2796823 07/15/20 08:06 AM 07/15/20 08:06 AM
Joined: Dec 2003 Posts: 22,696 Bitopia J jcc If you can't dazzle em with diamonds..
jcc If you can't dazzle em with diamonds.. J Joined: Dec 2003 Posts: 22,696 Bitopia	Originally Posted by Mr.Yuck Hydromat or......... Too simple Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.

Re: EFI Gas tank options for handling? [Re: jcc] #2796892 07/15/20 11:38 AM 07/15/20 11:38 AM
Joined: Sep 2003 Posts: 10,645 Houston, Tx A AlexP I Live Here
AlexP I Live Here A Joined: Sep 2003 Posts: 10,645 Houston, Tx	https://board.moparts.org/ubbthread...let-the-hemi-swap-begin.html#Post1832648 Some older pictures of my tanks inc b body set up. My Build thread: Let the hemi swap begin! 1968 wanna be pro touring whatchamacallit with some fancy stuff and a new roof skin.

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