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#1 |
Registered User
![]() Join Date: Aug 2013
Location: Navasota, TX
Posts: 708
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Com' On PO - Dangerous Fuel Lines
The PO decided to run the rubber fuel line from the carb to passengers side of the motor, run it back behind the motor, to the frame rail and then to the fuel pump. The lines were SUPER cracked (see pics) and very dangerous so I reran the lines. I angled the fuel pump connection up and ran the fuel line infront of the motor.
QUESION: Is the way I ran it a bad idea? I want to make sure the heat of the motor isn't going to hurt the fuel lines. What do you guys think??
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Neil............... ![]() 1972 C10 SWB - Shop Truck in the Works 5.3 LS / Full Air Ride / Rear Notch 20" American Racing Daytonas IG - neilioustx - pictures of build/progress Born and Raised in the Promised Land.... TEXAS Y'ALL!! |
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#2 |
Registered User
![]() Join Date: Feb 2013
Location: Georgia
Posts: 193
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Re: Com' On PO - Dangerous Fuel Lines
I would have ran a metal line myself. Not sure how safe the rubber line is.
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#3 |
Registered User
Join Date: Jul 2014
Location: phx az
Posts: 324
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Re: Com' On PO - Dangerous Fuel Lines
the rubber lines are fine, not perfect but fine.
thousands of street rods drive everydya like ho you have it. but in the end id be happier with gettin a tube bender and running some nice steel lines, but that's just me.
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tubbed 1984 gmc jmmy http://67-72chevytrucks.com/vboard/s...d.php?t=639738 Alice Hombre http://67-72chevytrucks.com/vboard/s...d.php?t=808454 1963 Scout Retro-mod https://67-72chevytrucks.com/vboard/...d.php?t=854167 |
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#4 |
Senior Member
![]() Join Date: Oct 2009
Location: Godley, TX
Posts: 17,963
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Re: Com' On PO - Dangerous Fuel Lines
take the time to run metal, it's simply safer. If you must use rubber, I would not allow the line or filter to rest on the water pump (or anything that will get hot).
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#5 |
blood type; Retumbo
Join Date: Jan 2004
Location: next to my reloading bench
Posts: 10,269
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Re: Com' On PO - Dangerous Fuel Lines
that method would get you kicked out of NSRA or just about any other sanctioned car show or event. I believe the rule is no more than 6" of flexible fuel line per vehicle.
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Man rule #77...if you own a 67 stepside with a caddy 472 you will never be in danger of loosing you man card |
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#6 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Com' On PO - Dangerous Fuel Lines
the rubber lines are just fine until they cause your truck to burn to the ground
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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#7 |
Registered User
![]() Join Date: Aug 2013
Location: Navasota, TX
Posts: 708
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Re: Com' On PO - Dangerous Fuel Lines
Point taken guys, I will work on getting metal lines going. I was hesitant since I haven't done that before. Thank God it didn't already have issues, I bet I pulled 4 feet of hose and a plastic filter. Thanks for the comments everyone.
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Neil............... ![]() 1972 C10 SWB - Shop Truck in the Works 5.3 LS / Full Air Ride / Rear Notch 20" American Racing Daytonas IG - neilioustx - pictures of build/progress Born and Raised in the Promised Land.... TEXAS Y'ALL!! |
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#8 |
Registered User
Join Date: Feb 2009
Location: Norcal, CA
Posts: 169
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Re: Com' On PO - Dangerous Fuel Lines
I don't think it's a good idea to run the lines right next to the alternator and wiring
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#9 | |
blood type; Retumbo
Join Date: Jan 2004
Location: next to my reloading bench
Posts: 10,269
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Re: Com' On PO - Dangerous Fuel Lines
Quote:
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Man rule #77...if you own a 67 stepside with a caddy 472 you will never be in danger of loosing you man card |
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#10 |
Registered User
![]() Join Date: Aug 2014
Location: Pittsburgh, PA
Posts: 627
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Re: Com' On PO - Dangerous Fuel Lines
I would have used an fittings and line. Best lines for fuel pump to carburetor imo.
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#11 |
Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: Com' On PO - Dangerous Fuel Lines
There is a steady stream of ozone coming off the back of that alternator that will eat the rubber up. I agree.
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My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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#12 |
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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Re: Com' On PO - Dangerous Fuel Lines
If you have more than about 6 inches of rubber fuel in line in the ENTIRE truck you are asking for trouble. There are only two pieces needed: a short flex segment where it goes from cab to frame and a second one where it goes frame to pump. That much rubber may not even be legal for all I know, but would never pass a safety inspection. And it wouldn't be allowed near an NHRA track (not that you likely care about that). So now that everyone has told you steel lines:
You can buy pre-bent lines for most of it. I enjoy making my own lines, and if you stick to the copper-lines mild steel stuff it's even fun and can be done with a hand-tool. Stainless is WAY harder, don't try it your first time.
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1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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#13 | |
Registered User
Join Date: Jul 2014
Location: phx az
Posts: 324
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Re: Com' On PO - Dangerous Fuel Lines
Quote:
I have high pressure rubber FI line from my tank to motor, probably 18 feet of it. And i have zero worries or concerns
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tubbed 1984 gmc jmmy http://67-72chevytrucks.com/vboard/s...d.php?t=639738 Alice Hombre http://67-72chevytrucks.com/vboard/s...d.php?t=808454 1963 Scout Retro-mod https://67-72chevytrucks.com/vboard/...d.php?t=854167 |
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#14 | |
blood type; Retumbo
Join Date: Jan 2004
Location: next to my reloading bench
Posts: 10,269
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Re: Com' On PO - Dangerous Fuel Lines
Quote:
not only is it a fire hazard for your truck, I'd hate to have my vehicle next to yours if it lights up. Park it in your attached garage and you loose your house as well. Fire=BAD. Do everything to avoid it
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Man rule #77...if you own a 67 stepside with a caddy 472 you will never be in danger of loosing you man card |
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#15 | |
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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Re: Com' On PO - Dangerous Fuel Lines
Quote:
NHRA doesn't allow more than 6 inches total on the car, I believe. Plus rubber fails at a much higher rate than steel. It's probably even more than 100 to one. The more you have of it the more risk you take. What about road debris? Have we not all hear the "thunk" when something gets kicked up into the undercarriage? You'll dent a steel line, puncture a soft line.
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1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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#16 |
Registered User
Join Date: May 2011
Location: Fort Pierce, FL
Posts: 430
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Re: Com' On PO - Dangerous Fuel Lines
If rubber is just as good as, and just as safe as, then GM would have used rubber the whole way on every vehicle. Times millions and millions of vehicles, it would have resulted in enormous cost savings and additional profit. But they didn't.
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#17 |
Registered User
Join Date: May 2011
Location: Oakley, Michigan
Posts: 735
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Re: Com' On PO - Dangerous Fuel Lines
Look under a new GM vehicle.... Not much steel used in the lines (as other's have also pointed out). They use a lot of hard plastic lines.
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#18 |
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Join Date: Aug 2012
Location: error 404 location not found
Posts: 816
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Re: Com' On PO - Dangerous Fuel Lines
There is a very big difference in the quality of high pressure rubber hose and the crap they sell on the spools in advance auto zone....
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1995 s10 blazer 4.3 1967 c10 350/350 fleet short 1993 s10 blazer 4.3l 4l60 RIP 6/20/14 2000 mercury sable Thats a how I roll |
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#19 |
Account Suspended
Join Date: Jan 2007
Location: Tucson
Posts: 2,183
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Re: Com' On PO - Dangerous Fuel Lines
Yes, there is! US Coastguard safety standards require the use of a Coast Guard certified rubber hose between the mechanical fuel pump and carburetor on carbuerator equipped engines due to metal fatigue and stress fractures in metal lines made from various Aluminum alloys, Mild Steel and Stainless steel. That hose must meet SAE standard J1527. In that application it is impervious to ozone, alcohol, gasoline, diesel fuel, diesel fuel additives and hydraulic fluid (brake fluid). Properly attached so it does not come in contact with rotating parts of the motor or motor accessory drive, or the hot exhaust manifold this tubing is as safe or safer than metallic tubing.
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#20 | |
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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Re: Com' On PO - Dangerous Fuel Lines
Quote:
I'm skeptical because I can understand a marine application needing a flex section between tank line and pump, but why between pump and carb? It makes no intuitive sense to me, anyway. Between the vessel and pump I can see. Or if the pump isn't attached to the engine, then ok.
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1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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#21 |
Registered User
Join Date: May 2014
Location: Manteca, Ca.
Posts: 274
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Re: Com' On PO - Dangerous Fuel Lines
My question is what kind of Carb has the fuel inlet on the drivers side? Guess that I may be out of touch.
I would at the least get an OEM type metal fuel line from the pump to the carb. To each their own. Metal fuel line is best but rubber "FUEL" line has been used for years.
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Terry Soon to be retired and moving to Bristol, TN. |
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#22 |
Registered User
Join Date: Apr 2012
Location: Cape Neddick
Posts: 215
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Re: Com' On PO - Dangerous Fuel Lines
Nice looking engine compartment. It also looks like you did try and run the rubber lines neatly kudos for that.
As others here have already stated metal lines are the way it should be done. I don't think the premade lines will work in your case, I noticed the low mounted alternator along with the Holley carb. and the aftermarket fuel pump. Using the Holley will require a special fitting a special Banjo style fitting. a short rubber ( 2.0") run to your filter another short rubber (2.0") to the metal line to your fuel pump. Yes sanctioned events don't recommend flexible fuel line unless it is braided line. I used to run a Camaro that was run with 1/2 aluminum line. That was a Bit%% to work with it just wanted to kink. Good luck with it keep us posted and how about some more photos of it. |
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#23 |
Registered User
Join Date: Oct 2013
Location: Rt 66 Gallup, NM
Posts: 527
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Re: Com' On PO - Dangerous Fuel Lines
Put your fuel filter before your fuel pump, not after. It may be a pain to get under the truck to change it, but if you ever get trash in the gas, your fuel pump will thank you.
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2005 GMC K2500HD D/A 1993 GMC K1500 2011 Subaru Legacy. 2013 Subaru Outback 1970 C-10 2WD, SWB stepside, 292, TH350, PS, more rust than anything. God is my pilot. ![]() |
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#24 |
Registered User
Join Date: Feb 2013
Location: alvin, texas
Posts: 622
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Re: Com' On PO - Dangerous Fuel Lines
you still need one after the pump, and the one before the pump should be a 100 micron screen type filter not your standard 40 micron or smaller filter
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1967 C10 lwb two tone, 305 & rat fink style floor shifted 700r4, 20" steelies 2004 2500HD utility bed aka Brutus |
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#25 |
Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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Re: Com' On PO - Dangerous Fuel Lines
On my Aeromotive A1000 I run a 100 micron before and a 10 micron after. That was their recommendation anyway.
__________________
1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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