| [GMCnet] Replacing rubber gas lines. Tanks to engine, and vents. [message #287671] |
Mon, 21 September 2015 07:56  |
BobDunahugh
Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA
Karma: 11
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Senior Member |
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When I last replaced all my rubber lines 11 years ago in the burned GMC. I bought a 25 ft roll. I think the hose was 3/8. And ended up using it all up. This afternoon I'm going to go get the donor GMC. I need some 3/8 rubber hose to run a line from a gas can, to an electric pump, then to the carb. As the gas in the tanks is 10 years old. So is most of the hose I'll need 3/8 ? I'm thinking that if I need 6 ft of 3/8 hose today. I might as will buy a roll now. I'm going to use the burned GMC frame, and drive train. That hose is all fine now. But as long as it's going to be all apart. It's a good time to replace it all now. The frame off restoration starts today.Thank Bob
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| Re: [GMCnet] Replacing rubber gas lines. Tanks to engine, and vents. [message #287674 is a reply to message #287671] |
Mon, 21 September 2015 08:17  |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Bob,
I have purchased Poly Armour line to replace the rubber fuel lines in both The Blue Streak and Double Trouble. I would suggest you
consider doing the same thing. I would also suggest you install in tank electric fuel pumps that feed a surge tank mounted to the
firewall which in turn feed the mechanical fuel pump. The surge tank will have a bypass that circulates the fuel back to the fuel
tanks through a line that "T's" into the fuel filler. I am copying what Steve Southwood did.
It would be very easy to run the lines along the outside of the frame with the body off. They would be subjected to less heat that
comes off the engine and transmission as you was motivatin' down the road! ;-)
However, if you do install in tank fuel pumps I reckon it's a good idea to cut access holes in the floor so you can access them
without having to drop the tanks.
Regards,
Rob M.
The Pedantic Mechanic
-----Original Message-----
From: Bob Dunahugh
When I last replaced all my rubber lines 11 years ago in the burned GMC. I bought a 25 ft roll. I think the hose was 3/8. And ended
up using it all up. This afternoon I'm going to go get the donor GMC. I need some 3/8 rubber hose to run a line from a gas can, to
an electric pump, then to the carb. As the gas in the tanks is 10 years old. So is most of the hose I'll need 3/8 ? I'm thinking
that if I need 6 ft of 3/8 hose today. I might as will buy a roll now. I'm going to use the burned GMC frame, and drive train. That
hose is all fine now. But as long as it's going to be all apart. It's a good time to replace it all now. The frame off restoration
starts today.Thank Bob
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Replacing rubber gas lines. Tanks to engine, and vents. [message #287680 is a reply to message #287671] |
Mon, 21 September 2015 09:15 |
lqqkatjon
Messages: 2324
Registered: October 2010
Location: St. Cloud, MN
Karma: 5
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Senior Member |
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Bob,
For what it is worth, If I had a frame off, I would be installing metal lines where i could, up and down the frame, where the old rubber lines might be. You can always go do the electric fuel pump and such if you want, but I think it is so easy and cheap, to replace the rubber lines with metal with it all open. Then you only have to buy a couple feet of rubber line.
If I did not have the frame off, I have no problems installing all new rubber lines. I do not think it was a terrible job as long as your senders/tanks are OK, other then jacking up the coach. I did mine over a weekend by myself.
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
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