The 1947 - Present Chevrolet & GMC Truck Message Board Network

The 1947 - Present Chevrolet & GMC Truck Message Board Network (https://67-72chevytrucks.com/vboard/index.php)
-   The 1967 - 1972 Chevrolet & GMC Pickups Message Board (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=3)
-   -   Can i use a rubber hose opposed to the metal fuel line?? (https://67-72chevytrucks.com/vboard/showthread.php?t=196734)

tripleblack 04-19-2006 10:40 PM

Can i use a rubber hose opposed to the metal fuel line??
 
Just from my fuel pump to the carbuerator i was wondering if i can use a rubber fuel line hose. I just waS wondering if anyone has done this andhow it was. I converted to a rear mount gas tank and i will use a metal line along the frame to the fuel pump. Thanks for the help.

franks72 04-19-2006 11:02 PM

Re: Can i use a rubber hose opposed to the metal fuel line??
 
I used aeroquip socketless fittings and hose on my drag car, It was nice stuff and easy to use and NHRA leagle.. comes in blue or black..

tnblazerk5 04-19-2006 11:03 PM

Re: Can i use a rubber hose opposed to the metal fuel line??
 
i would use metal lines from the tank to the pump from the pump to the carb if at all possible

the resion most people dont use the hose is cause they leak and in time spring leaks and leaking gas lines and a hot motor is not a good thing and will burn the truck to the ground

Fred T 04-19-2006 11:05 PM

Re: Can i use a rubber hose opposed to the metal fuel line??
 
Yes, you can, but there are some hazards/risks involved with using rubber fuel line.

Sealing is a problem when you don't use hose fittings. Just slipping the hose on steel tube is asking for leaks, many times they are not visible. I recommend using double clamps and Hylomar sealant when not using hose fittings.

Rubber hose will move around and wear. It needs standoffs to keep it in place.

Regular inspection for cracks and wear is needed. Should be done at every oil and lube.

I recommend only short runs of rubber fuel line. Bending steel line isn't that difficult, it can be done with a tubular spring bender that costs a couple of bucks. You can buy the line at an auto parts store.

SCOTI 04-19-2006 11:25 PM

Re: Can i use a rubber hose opposed to the metal fuel line??
 
Yes, it can be used.
No, it's not the best way to run fuel to the carb.

That being said, I ran rubber 3/8" fuel injection grade line from the hard line on the frame to the fuel pump, then around the front of the engine compartment to the drivers side, & then to the carb inlet of my 6cyl. I ran it this way because I was continuously having a problem w/vapor-lock & needed to route the line farther away from the heat of the engine (the 6cyl had it routed over the exhaust manifold, or, the source of my heat).

It was about 5 ~ 6ft of fuel inj grade hose & I replaced it each spring regardless. I considered it cheap insurance against failure. I also ran double clamps on all of the lines.

bigjimzlll 04-20-2006 12:39 AM

Re: Can i use a rubber hose opposed to the metal fuel line??
 
If you plan on racing at a track, the most rubber line you can use is 12"

boundstaffpress 04-20-2006 11:21 AM

Re: Can i use a rubber hose opposed to the metal fuel line??
 
JUST DON'T DO IT!

Stainless braided line with fittings is ok, but rubber alone is asking for a problem. The risk to cost ratio is way too high. Lost of guys run a small amount of rubber up by the carb so that they can attach in-line fuel filters or make attaching to the carb a little easier.

Rubber deteriorates, rubs through, gets brittle and developes pin holes. Maybe it won't happen this year, but you are INVITING trouble. Maybe major trouble.

What don't you like about steel line from the pump to the carb?

cdowns 04-20-2006 12:21 PM

Re: Can i use a rubber hose opposed to the metal fuel line??
 
bad idea=rubber fuel lines / good idea==big fire

jhow66 04-20-2006 09:58 PM

Re: Can i use a rubber hose opposed to the metal fuel line??
 
What about all that rubber lines back at your fuel tank. Most of it has been there since the truck was new.

rkarr 04-20-2006 10:33 PM

Re: Can i use a rubber hose opposed to the metal fuel line??
 
Quote:

Originally Posted by jhow66
What about all that rubber lines back at your fuel tank. Most of it has been there since the truck was new.

no heat... and, they leak as well, but they generally aren't too close to an ignition source..
Summit sells 25 foot kits.... cheap....
JMHO.

jhow66 04-20-2006 10:47 PM

Re: Can i use a rubber hose opposed to the metal fuel line??
 
Other then the exhaust pipes.

68C15 04-20-2006 10:48 PM

Re: Can i use a rubber hose opposed to the metal fuel line??
 
IIRC places like LMC sell metal pre-bent lines to go from pump to Qjet.
I have 3 inches total in my truck. that's from frame to pump and I change it about once a year.

PICKMUP 04-20-2006 11:29 PM

Re: Can i use a rubber hose opposed to the metal fuel line??
 
2 Attachment(s)
Rubber is cheap trouble...as stated.
Metal is good, but inverted flare fittings have to be tightened too much and sometimes strip our the soft carb inlet or the nut fitting turn round.

You can't beat SS braided hose with AN fittings. It is strong, flexible, tough, insulated, looks good, easy to add an inline filter, and you don't have to tighten it much.
Edelbrock has some cool fittings that attach to their carbs and are made for braided lines. It works on all engines.

mbgmike 04-23-2006 12:03 AM

Re: Can i use a rubber hose opposed to the metal fuel line??
 
Quote:

Originally Posted by SCOTI
Yes, it can be used.
No, it's not the best way to run fuel to the carb.

That being said, I ran rubber 3/8" fuel injection grade line from the hard line on the frame to the fuel pump, then around the front of the engine compartment to the drivers side, & then to the carb inlet of my 6cyl. I ran it this way because I was continuously having a problem w/vapor-lock & needed to route the line farther away from the heat of the engine (the 6cyl had it routed over the exhaust manifold, or, the source of my heat).

It was about 5 ~ 6ft of fuel inj grade hose & I replaced it each spring regardless. I considered it cheap insurance against failure. I also ran double clamps on all of the lines.

I agree ,use the fuel injection hose. Alot of states have gone to oxiginated fuel during the summer and with all the newer additives they can eat up hoses. Also if your fuel pump is older than say nine years it wouldn't be a bad idea to replace it also:) The hose is marked SAE30R9


All times are GMT -4. The time now is 07:38 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright 1997-2025 67-72chevytrucks.com