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Last summer my 50 Eight suffered from major vapor lock and I discovered a few pin holes in the metal fuel line along the frame just under the drivers door. I cut the metal fuel line after the holes and replaced that section with rubber line. My question is this a good idea? I just got my fuel tank back from the radiator repair shop where they cleaned and lined the tank (it was very dirty). Should I leave the rubber fuel line, or should I replace it with new metal line?

My two cents says replace it. Aside from not knowing how nicely the rubber will play every time they change or add something in the gas, I'd be concerned with it low and exposed in that location it could be vulnerable to any unexpected nasty road conditions or debris.

Probably not high priority issue but i would definately make somekind of plan to replace the entire line with steel over the next 12 months. Much Sooner if alot of long distance touring is in the plans.

With a couple of pin holes already discovered, the integrity of the balance of the line is pretty questionable so I'd consider the rubber hose repair to be temporary at best.

I had a feeling that was going to be the response. I have got the metal line, flare tool, line bender, and fittings. Back under the car I go, at least this job doesn't involve going under the dash

Since you can buy the newer cupro-nickel line and it is so easy to work with, I would never use steel, even stainless, again. It is available for brake line or fuel line.

My fuel tank had a bad bung fitting on it so I never could get a good seal on a steel line. Also with the electric priming pump and fuel filter back near the tank, I went and changed it up a little bit.

So I installed a hose barb fitting on the take with a little teflon tape to make it seal, and then there is an 18" run of fuel injection hose from there up to the hose barb on the fuel filter located in frame rail channel. Then it runs right into the fuel pump, and then into the the metal cupro line that runs all the way up to the mechanical pump on the engine following the same route as the original one it replaced.

So basically a flex line of modern fuel resistant heavy duty injection hose between the take and the frame rail mounted fuel filter. This made it a lot easy to clean out the fuel filter when I was having tank debris issues at one time.

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Not sure what is worse--working under the dash or getting the tubing snaked under the A arm and radiator. Both are a pain.

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A second on the softer line. I ordered Cunifer for the 47 gas line. The brake will be stainless as that is all Kanter sells in premade. Hopefully the bends will be decent and without anything in the way, it will go in without too much trouble. Now if they would just get here.

I hope you have more finesse or better technique than I when you do your line. My double flares on steel originally done for the 56 plain sucked. Most all I did was removed and premade lengths from the parts store went in their place when I did the recent brake master playing around -- hence the reason for the premade and the Cunifer on the 47. I'd also wonder if you can get steel to do the bends up front neatly without removing a bunch of things or doing it in a couple of pieces.

I had to do my line in two pieces as there was no way I could maneuver the line through all the twist and turns it had to make with the body on the car. Same goes with the brake line.

Do yourself a favor and replace the flex line to the fuel pump too, repros are available from Minnesota Packards IIRC.