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where to put a return line #99610 08/04/08 02:31 PM 08/04/08 02:31 PM
Joined: Feb 2003 Posts: 8,686 A Andrewh OP master
Andrewh OP master A Joined: Feb 2003 Posts: 8,686	So I originally was thinking of drilling a hole in the sending unit and welding in a tube for the return line. But having just gotten a new sending unit and looking at it, I don't see a whole lot of room to put one. I saw the one that takes part of the filler neck, but that means routing new line all the way to the back of the car. So I was thinking of punching a hole in the gas tank near the sending unit, taking the whole tube from the old sending unit and jb welding it in place there. Is there any reason not to do it this way?

Re: where to put a return line [Re: Andrewh] #99611 08/04/08 02:49 PM 08/04/08 02:49 PM
A Anonymous Unregistered
Anonymous Unregistered A	I drilled a hole in the sending unit plate and mounted an AN fitting in there.

Re: where to put a return line #99612 08/04/08 03:22 PM 08/04/08 03:22 PM
Joined: Sep 2004 Posts: 1,913 Brunswick, Jawgia Snailpower Infinitely Fast Snail
Snailpower Infinitely Fast Snail Joined: Sep 2004 Posts: 1,913 Brunswick, Jawgia	I used the filler tube, but it turned out really easy to do. I used aluminum line though... 70 Coronet- turbocharged 360/518/3.73 SG

Re: where to put a return line [Re: Snailpower] #99613 08/04/08 03:40 PM 08/04/08 03:40 PM
Joined: Feb 2003 Posts: 8,686 A Andrewh OP master
Andrewh OP master A Joined: Feb 2003 Posts: 8,686	sorry already have line to the back of the car. Meant to say from the front of the gas tank to the rear of the gas tank since this one fill behind the license plate. 65 coronet. cucu- thanks for the idea. Might be easier than welding, but it looks real tight for space. Have to see how big the fitting will be. I don't want to rain gas on the electronics/resistor for the sending unit.

Re: where to put a return line [Re: Andrewh] #99614 08/04/08 03:43 PM 08/04/08 03:43 PM
Joined: Aug 2004 Posts: 1,213 Los Angeles, CA Mobarge pro stock
Mobarge pro stock Joined: Aug 2004 Posts: 1,213 Los Angeles, CA	Why not get a 3/8" sending unit with the return fitting already in place? '71 SSP - SOLD!

Re: where to put a return line [Re: Mobarge] #99615 08/04/08 03:58 PM 08/04/08 03:58 PM
Joined: Feb 2003 Posts: 8,686 A Andrewh OP master
Andrewh OP master A Joined: Feb 2003 Posts: 8,686	they don't make one for the 65 b-body. already looked. Plus the ones they did make only had 1/4 inch return. I want to use the 5/16th.

Re: where to put a return line [Re: Andrewh] #99616 08/04/08 06:08 PM 08/04/08 06:08 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	would it be possible to drill out the 1/4" nipple & solder in a 5/16" one? live every 24 hour block of time like it's your last day on earth

Re: where to put a return line [Re: RapidRobert] #99617 08/04/08 06:46 PM 08/04/08 06:46 PM
Joined: Feb 2003 Posts: 8,686 A Andrewh OP master
Andrewh OP master A Joined: Feb 2003 Posts: 8,686	Maybe, but they don't make one for a 65 b-body. The ones they do make with the return are for other cars, so I didn't check them out.

Re: where to put a return line [Re: Andrewh] #99618 08/04/08 07:25 PM 08/04/08 07:25 PM
Joined: Sep 2004 Posts: 1,913 Brunswick, Jawgia Snailpower Infinitely Fast Snail
Snailpower Infinitely Fast Snail Joined: Sep 2004 Posts: 1,913 Brunswick, Jawgia	Disregard this if I did not understand what you were trying to do. Here is a rough diagram how I set my system up. Mine fills behind the plate as well, so it is probably a similar setup. I used 1/2" return line since I run an FI pump. 4597929-Returnline.jpg (90 downloads) 70 Coronet- turbocharged 360/518/3.73 SG

Re: where to put a return line [Re: Snailpower] #99619 08/04/08 08:14 PM 08/04/08 08:14 PM
Joined: Jan 2004 Posts: 921 Chicago illinois ChinooK440 super stock
ChinooK440 super stock Joined: Jan 2004 Posts: 921 Chicago illinois	I added a 3/8" return to a stock sending unit per an old Mopar Action Article. Which goes something like this ......... First drill a small pilot hole about an 1/8" then use a tapered center punch with a small piece of pipe or socket to support the sending unit under the pilot hole. Then tap the center punch to enlarge the pilot hole until it,s a snug fit for the piece of line your adding. Then clean and file any rough edges and then solder the new nipple to the sending unit. By swedging the hole to size this way instead of just drilling a large hole , it will form a shoulder which will give the connection more support . Just look at the way the factory feed line is connected to the sending unit to better understand what i,m babbling about.

Re: where to put a return line [Re: ChinooK440] #99620 08/04/08 09:21 PM 08/04/08 09:21 PM
Joined: Feb 2003 Posts: 8,686 A Andrewh OP master
Andrewh OP master A Joined: Feb 2003 Posts: 8,686	Snailpower- that is what I would have to do, except I am using the old fuel line as my return line, so it ends at the sending unit. So I would rather not figure out how to run it all the way to the back of the tank. chitownhustler- thanks for the heads up for how to do it right.

Re: where to put a return line [Re: ChinooK440] #99621 08/05/08 07:40 AM 08/05/08 07:40 AM
A Anonymous Unregistered
Anonymous Unregistered A	Quote: I added a 3/8" return to a stock sending unit per an old Mopar Action Article. Which goes something like this ......... First drill a small pilot hole about an 1/8" then use a tapered center punch with a small piece of pipe or socket to support the sending unit under the pilot hole. Then tap the center punch to enlarge the pilot hole until it,s a snug fit for the piece of line your adding. Then clean and file any rough edges and then solder the new nipple to the sending unit. By swedging the hole to size this way instead of just drilling a large hole , it will form a shoulder which will give the connection more support . Just look at the way the factory feed line is connected to the sending unit to better understand what i,m babbling about. thats a great what to do it!

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