I have not narrowed down my Fuel line spec yet.
Mel's post and this whole "Fuel Line behind the grey tank issue" has me thinking and looking at the whole ordeal.
Some food for thought and info on what I can see in my 1984 345...
Please chime in if I miss something!
From front to back, here is my plan:
The flex line from the Carb to the hard pipe on the top of the engine...
Someone put a PLASTIC filter inline on top of a HOT Engine...
Not smart, and heats fuel up too!
My plan is to remove that, replace that line with SS Braided, feeding a chassis rail mounted Adjustable Fuel Pressure Regulator, with Fuel Pressure Guage, then the Fuel flow Sensor for my Zemco Trip Computer, then a SS braided to the carb.
The Quadrajet has a paper filter inside the fuel inlet, so dont forget that one.
Replace both rubber lines on the engine Mech fuel pump with SS Braided.
Replace flexible pipes and filter on kerbside chassis rail.. Its forward of the entrance Door, and near to the RH exhaust and Battery Tray, so I am leaning toward SS Braided there too.
Mine says Wix 33482.
Moving rearward, approximatly behind the entrance door step, there are 2 rubber sections in the lines on the chassis rail here... and BOTH of mine are showing signs of weepage.
I see what looks like 3 fuel related lines on the chassis rail... so fuel feed, fuel return and vapor?
Looking rearward, over the rear axle I see another 2 Joints and rubber lines passing thru a hole in the chassis rail and into the area where the Grey tank is... Top LH side of this pic..
Then Rearward of the axles and grey tank a rubber pipe emerges, and joins to my Aux fuel pump and rear filter... and up onto the top of the gas tank...
My fuel pump mounting is falling apart AND poorly mounted/planned.
Hangs right in the path of destruction from road hazard kicked up by rear tires!
I am gonna move the pump up and mount it on rubber mounts on the upper L of the Chassis rail, secure and mount the filter, and lines where they are NOT hanging free and swinging/chaffing the pipes!
Looks like the gas tank has to be dropped to get at the lines to and from it...
I guess thats a good time to inspect, clean and seal the interior and exterior before it rusts thru...
FUEL TANK REPAIR KIT-POR-15 Inc.
Mel, is the pipe over the Grey tank all flex line?
If so, maybe you could attach a new line the the old one and pull it thru?
Or maybe re-route the pipe around or under... lets face it even that would be better/safer than not being able to see and check its condition!
My rear pipe says 5/16"... is that the correct size?
Also, as I told Derek, my filler to tank Pipe was bad... and weeping causing a bad gas smell when filling up.
Replaced mine, and FYI the original was 1 3/4" dia x 24" long, but I had a pice of 2" in my garage so used that for now.
Also inspect the vent pipe that runs along side it...
Pic of mine showing leakage from filer pipe close to neck, LH side...
Lets not forget the Genset feed pipes while we are doing this!