New Gas 1tank

[Kilgore47]

In the process of installing the new gas tank on the 47 P15.  The new tank is exactly like the old one - Except!  The outlet isn't as deep as the old one.  When I put that hard to find little brass piece back in - there isn't enough threads left for the tubing to catch.  Thought about putting the expensive brass piece in the drill and using a file to make it shorter.  Decided to save that for a last resort.  So I started going around to all the places that have a selection of fittings.  Not much luck.  Lots of pipe threads but not what I was looking for.  Then I went to the hydraulic hose shop.  They came up with a fitting that would thread into the tank with an O ring seal that transitions to a hose barb.  

 

The fittings on the top of the picture shows what came out of the old tank.  The bottom shows the fittings I got from the hose shop. 

[Sam Buchanan]

The bung on my replacement tank was NPT threads, no ferrule needed. I used a brass NPT barb fitting to transition to rubber fuel line. 

[Los_Control]

Same here on my truck ... NPT threads going into the tank. I installed a brass bung that converts the NPT threads to the compression fitting threads that will allow the metal line to connect to it.

 

Like Sam I will need to convert to rubber at some point. I'm going to run a short piece of metal line & before the frame convert to rubber to install a fuel filter & possibly electric  fuel pump, then back to hard line to the fuel pump.

 

Just like connecting to the fuel pump they used a rubber line because the engine flexes different then the frame.

The factory never installed a rubber line from the tank to the frame ...... I feel the body & frame also flex differently and could use a rubber line for the transition.

It also is the perfect spot for a fuel filter.

[Curt Lee]

Again, in my best Johnny Carson; "I did not know that." Great catch. I probably would have made a few different lengths of that brass spacer until I found one to suit. But, then again, I'm a cheap tightwad Luddite ex-Navy guy...

[LazyK]

5/16 inverted flare x male NPT should be available from any auto parts store.

Can't tell from the photo but should be either 1/8 or 1/4 NPT

 

Edited September 15, 2023 by LazyK

[Kilgore47]

I forgot to mention that the guy at the hose store gave me these fittings. 

 

And it looks like no leaks this morning - that means I don't need that brass spacer.  If I keep it - it will just end up lost in one of the tool box drawers.  So if anyone needs it just let me know and I will send it to you.  No charge.

 

Now I'm off to a local car gathering.  About 15 miles from here.  I did remember to fill up the new tank.