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EFI Gas tank options for handling? #1274279
07/26/12 04:09 AM
07/26/12 04:09 AM
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moparAL Offline OP
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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
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jcc Offline
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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.

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Re: EFI Gas tank options? [Re: moparAL] #1274281
07/26/12 08:42 AM
07/26/12 08:42 AM
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Posts: 11,179
Atco NJ
DJVCuda Offline
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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
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East Tennessee
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Burkenator Offline
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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
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moparAL Offline OP
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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
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Michigan
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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
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Sonora CA
Mopar_Rich Offline
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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.

Re: EFI Gas tank options? [Re: moparAL] #1274286
07/26/12 01:24 PM
07/26/12 01:24 PM
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NW Chicago suburban area
Mopar Mitch Offline
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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 Offline
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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
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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
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Nebraska
72Swinger Offline
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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 (372 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
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Ontario,Canada
brads70 Offline
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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
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IN
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ahy Offline
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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
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Posts: 723
Houston Tx
Uhcoog1 Offline
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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 Offline
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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
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Nebraska
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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
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moparAL Offline OP
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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

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
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moparAL Offline OP
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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
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Nebraska
72Swinger Offline
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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
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moparAL Offline OP
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Hotrod city garage gas tank picture 3

7314782-42979219.jpg (486 downloads)
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