ccracin
08-09-2011, 01:27 PM
That is my question! Cheesy, I know.
I am currently working on building a fuel tank for our truck project. It is based on Carl C's Vaporworx technology. He has been a great help. I have discussed this with him and others, but wanted to throw this out to the community. The fuel system uses the new Camaro internally regulated fuel pump module. I am fabricating the tank completely. I plan to have the fuel filler tube enter the top of the tank and extend down in to about 1-2" above the floor of the tank. This is in hopes of controlling fuel slosh back up to the vented cap that will be mounted flush in the bed floor. (Notice I said VENTED cap) I am certain the vented cap will provide the needed air to replace the fuel that is being used. My concern is that on hot days when fuel vapor builds inside the tank, if the fuel level is above the bottom of the filler tube I may have a problem. I don't want the fuel being pushed up the tube under pressure. This brings me to my question, should I add another vent? My initial thought was I could drill a small hole in the filler tube just under the lid of the tank and this should allow the vented cap to vent excess pressure to the atmosphere. (Second Pic.) Check out the pics below of my configuration. What do you all think? Any practical experiences to relate? Now is the time to do what ever it is I am going to do. Also, you can see the tank so far in my build thread. The link is in my signature below. Thanks.
http://i140.photobucket.com/albums/r35/ccracin/GasTankRev3WFiller1.jpg
http://i140.photobucket.com/albums/r35/ccracin/GasTankRev3WFiller2.jpg
I am currently working on building a fuel tank for our truck project. It is based on Carl C's Vaporworx technology. He has been a great help. I have discussed this with him and others, but wanted to throw this out to the community. The fuel system uses the new Camaro internally regulated fuel pump module. I am fabricating the tank completely. I plan to have the fuel filler tube enter the top of the tank and extend down in to about 1-2" above the floor of the tank. This is in hopes of controlling fuel slosh back up to the vented cap that will be mounted flush in the bed floor. (Notice I said VENTED cap) I am certain the vented cap will provide the needed air to replace the fuel that is being used. My concern is that on hot days when fuel vapor builds inside the tank, if the fuel level is above the bottom of the filler tube I may have a problem. I don't want the fuel being pushed up the tube under pressure. This brings me to my question, should I add another vent? My initial thought was I could drill a small hole in the filler tube just under the lid of the tank and this should allow the vented cap to vent excess pressure to the atmosphere. (Second Pic.) Check out the pics below of my configuration. What do you all think? Any practical experiences to relate? Now is the time to do what ever it is I am going to do. Also, you can see the tank so far in my build thread. The link is in my signature below. Thanks.
http://i140.photobucket.com/albums/r35/ccracin/GasTankRev3WFiller1.jpg
http://i140.photobucket.com/albums/r35/ccracin/GasTankRev3WFiller2.jpg