Deleting crossover fuel tank?
Thread Starter
Intermediate
Joined: Mar 2014
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Deleting crossover fuel tank?
Has anybody permanently deleted the crossover tube and passenger side fuel tank ?
I am in the process of swapping a fuel pump and was very curious. I purposely keep 1/2 tank of fuel or lower and don't make long trips so just one tank would be plenty enough for me. I figured it would save weight and space, and also get rid of unnecessary stuff.
I usually only read on the forum and never start a tread but after an hour of searching I can't find anything
I am in the process of swapping a fuel pump and was very curious. I purposely keep 1/2 tank of fuel or lower and don't make long trips so just one tank would be plenty enough for me. I figured it would save weight and space, and also get rid of unnecessary stuff.
I usually only read on the forum and never start a tread but after an hour of searching I can't find anything
Le Mans Master
Joined: Aug 2004
Posts: 5,259
Likes: 16
From: Monroe Township New Jersey
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16
St. Jude donor in memory of jpee '14
I would think the designers placed the gasoline tanks where they are for a very good reason. You may want to check as I think the fuel is drawn from the passenger side fuel tank first. Good luck 
Thread Starter
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My point exactly, I never run more than a half tank bc it's just a weekend warrior / track car. So I never put enough fuel for it to make it to the passenger side. It only draws from the driver side.
No weight reduction freaks has done this???
No weight reduction freaks has done this???
Intermediate
Joined: Apr 2012
Posts: 47
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Has anybody permanently deleted the crossover tube and passenger side fuel tank ?
I am in the process of swapping a fuel pump and was very curious. I purposely keep 1/2 tank of fuel or lower and don't make long trips so just one tank would be plenty enough for me. I figured it would save weight and space, and also get rid of unnecessary stuff.
I usually only read on the forum and never start a tread but after an hour of searching I can't find anything
I am in the process of swapping a fuel pump and was very curious. I purposely keep 1/2 tank of fuel or lower and don't make long trips so just one tank would be plenty enough for me. I figured it would save weight and space, and also get rid of unnecessary stuff.
I usually only read on the forum and never start a tread but after an hour of searching I can't find anything
Having said that, if you have both tanks in the car, I wouldn't suggest always filling the tank half full, as this will wear out your fuel pump faster, as they are cooled by the fuel they pump. Doing so will shorten fuel pump life, which is probably why you're changing it in the first place.
To physically have only one tank is easy, pull the passenger tank out and the crossover tube and seal the driver side tank with your choice of method. Cannibalize the plastic from the passenger tank and seal off the crossover hole or use the crossover coupling and seal that.
The hard part is once you do that, no matter what you do your tank will read a maximum of half full, you would need some sort of electronic/rheostatic wizardry that i don't believe anyone has attempted to make your fuel gauge make any sense. You might very well be on your own there.
Last edited by loco_stevie; Oct 2, 2015 at 09:42 PM.
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Thread Starter
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Joined: Mar 2014
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Thank you loco_stevie. I just installed a mantic 9000 and a few other parts and had the cradle out and thought I would replace the pump as a precaution with a newer version while I had easy access.
I've read 50 threads ab people having issues with the crossover tube, seals leaking, etc. Just thought why not delete the other tank. I don't use it anyways. Not concerned with the tank only registering half full, as long as I knew when it was close to empty
I've read 50 threads ab people having issues with the crossover tube, seals leaking, etc. Just thought why not delete the other tank. I don't use it anyways. Not concerned with the tank only registering half full, as long as I knew when it was close to empty
Race Director
Joined: May 2004
Posts: 16,667
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From: Raleigh, NC
St. Jude Donor '15
Most people have problems after reassembling the tanks/crossover with the drivetrain still installed.
I've pulled mine with and without the drivetrain in place and never had a problem. Make sure you have all the seals, none of them are torn, and lube them prior to installation. They'll do their job if installed correctly and it's extremely easy to put back together with the transmission out of the way.
I've pulled mine with and without the drivetrain in place and never had a problem. Make sure you have all the seals, none of them are torn, and lube them prior to installation. They'll do their job if installed correctly and it's extremely easy to put back together with the transmission out of the way.
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You got people removing bumper supports, changing rotors, removing wiper motors and removing sun visors, etc for weight reduction. I don't think this is much as bad as many. My car is tore all apart. The fuel pump change took 15 minutes. Not bad at all. Just curious why none of these weight reduction fanatics don't have a write up already lol
Melting Slicks
Joined: Jul 2015
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From: Nashville TN
Thread Starter
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54 lbs, plus the 9 gallon tank, crossover pipe, fuel pump, and skid plate on that side.
My only concern is the wiring and return lines. I assume just unplugging the fuel pump on the passenger side won't affect anything. Also the cross over lines that hook to the driver side fuel pump
My only concern is the wiring and return lines. I assume just unplugging the fuel pump on the passenger side won't affect anything. Also the cross over lines that hook to the driver side fuel pump
Race Director
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From: Las Vegas NV
Race Director
Joined: May 2004
Posts: 16,667
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From: Raleigh, NC
St. Jude Donor '15
If he's not filling it past halfway then there won't be any fuel in the passenger tank anyways
There is no fuel pump on the passenger side. The driver fuel pump sends some pressure to the passenger tank and uses that to transfer fuel from passenger to driver tank (venturi).
So.. you'd have to find a way to block that off too. You might could just remove the lines that run from the driver side fuel pump to the passenger side. I'm not sure if that would cause any other issues or not.
http://www.corvetteactioncenter.com/...ystem-389.html
I still think it's a bad idea.. but whatever
54 lbs, plus the 9 gallon tank, crossover pipe, fuel pump, and skid plate on that side.
My only concern is the wiring and return lines. I assume just unplugging the fuel pump on the passenger side won't affect anything. Also the cross over lines that hook to the driver side fuel pump
My only concern is the wiring and return lines. I assume just unplugging the fuel pump on the passenger side won't affect anything. Also the cross over lines that hook to the driver side fuel pump
So.. you'd have to find a way to block that off too. You might could just remove the lines that run from the driver side fuel pump to the passenger side. I'm not sure if that would cause any other issues or not.
http://www.corvetteactioncenter.com/...ystem-389.html
I still think it's a bad idea.. but whatever
Race Director
Joined: Sep 2007
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From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
Now if you were building a dedicated track car, you'd most likely be ripping out the whole system and replacing it with a fuel cell.
A much easier method of reducing unnecessary weight, would be to drain the wiper fluid and then add only 1 pint for those rare times you'd get stuck with muddied windows during the 40 mile jaunts.
I'm guessing there are thousands of C6's that have the full load of OEM wiper fluid.
Race Director
Joined: Aug 2005
Posts: 13,592
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From: Hudson WI
NCM Sinkhole Donor
One more thing, the tank is so light, that it would be less trouble to have the driver lose a few pounds (not saying you need to) or take out the passangers seat.
Last edited by timd38; Oct 3, 2015 at 01:07 PM.
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