William,
Make sure that you use an SAE 30R9 fuel hose in all rubber fuel line
replacement. IF you use an SAE 30R7 hose you will be replacing it again in
5 years or less. It will get hard and brittle with todays ethanol laced
fuels. The R9 hose is a barrier type hose with a inner liner that is
pretty much impervious to Ethanol laced fuels.
I use Gates Barricade hose and it is available in 1/4?, 5/16?, 3/8? and
1/2?.
<
https://www.oreillyauto.com/detail/b/barricade-3759/belts-hoses-16454/hoses-25069/bulk-hose-16664/bulk-hose---fuel-hose-18164/0a74c36f4425/gates-barricade-1-4-inch-hose/27313/4349937?q=27313&pos=0
>
https://www.oreillyauto.com/detail/b/barricade-3759/belts-hoses-16454/hoses-25069/crankcase-breather-hose-14015/df8b1723839a/gates-barricade-5-16-inch-hose/27314/4349938?q=27314&pos=0
https://www.oreillyauto.com/detail/b/barricade-3759/belts-hoses-16454/hoses-25069/bulk-hose-16664/bulk-hose---fuel-hose-18164/0a74c36f4425/gates-barricade-3-8-inch-hose/27315/4349939?q=27315&pos=0
https://www.oreillyauto.com/detail/b/barricade-3759/belts-hoses-16454/hoses-25069/bulk-hose-16664/bulk-hose---fuel-hose-18164/0a74c36f4425/gates-barricade-1-2-inch-hose/27316/4349940?q=27316&pos=0
I get mine from Oreilly?s because they stock it. The newer manufactured
hoses have a black color liner. The Goodyear hoses originally came with a
blue colored liner. Just be sure to ask for the SAE 30R9 hose.
Gates also does make a SAE R10 Submersible hose as well and it is very
expensive as you only really need it to replace any hose that you might
have inside the fuel tank if you have in tank pumps.
https://www.oreillyauto.com/detail/b/gates-3728/belts-hoses-16454/hoses-25069/bulk-hose-16664/bulk-hose---fuel-hose-18164/0a74c36f4425/gates-3-8-inch-hose/27097/4330538?q=27097&pos=0
My first choice would be the Gates hose and the Goodyear SAE 30R9 hose
would also be a good. The SAE 30R9 hose is rated for fuel injection and
higher pressure, but it is NOT the pressure that I am using this hose for
but rather the durability of the hose.
Get a roll of 3/8? hose, 10? of 1/4? and 20? of 5/16? hose.
Be sure to replace all your hose clamps with SS clamps, go new throw the
old stuff away. I get mine from Lowes in the plumbing dept.
https://www.lowes.com/pd/AMERICAN-VALVE-1-4-in-to-5-8-in-Dia-Stainless-steel-Adjustable-clamp/1000341875
The price listed is for a bag of 10 and they are all SS construction, a lot
of the auto parts store clamps are NOT all SS and they cost much more.
I replaced all my lines on top of the tanks with metal lines, I used steel
brake lines. I use the barrier hose to connect the lines to the tanks and
also replace rubber fuel line down the frame rails with 3/8 brake lines and
put those on the outside of the frame rails.
http://www.gmcmhphotos.com/photos/g6928-fuel-tank-system-rebuild.html
Again this are my SUGGESTIONS, you can do what you want!
Regards,
JR Wright
GMC Great Laker MHC
GMC Eastern States Charter Member
GMCGL Tech Editor
GMCMI
78 GMC Buskirk 30? Stretch
1975 GMC Avion (Under Reconstruction)
Michigan
>
> William,
>
> You're wise to replace those old rubber lines. Personally, I'd replace as
> much of them as possible with metal lines. Just as important: Unless the
> tank selector valve is new, I'd replace it with TWO electric pumps, one
for
> each tank. That gives you tank, filter, and pump redundancy while
> eliminating that potentially troublesome valve (they can stick in one
> position or, worse, between positions, admitting air). The cost vs
> replacing the valve should be insignificant.
>
> JWID,
>
> Ken H.
> Americus, GA
> '76 X-Birchaven w/Cad500/Howell EFI & EBL,
> Manny Brakes & 1-Ton, Troy-Bilt APU, etc., etc., etc.
>
www.gmcwipersetc.com
>
>
> On Thu, Nov 8, 2018 at 12:42 PM william weyrowski <
William>
>
>> Looking to replace some old rubber in my 2 month old baby.
>>
>> First, I am going through the gas lines and replacing everything. I
found
>> some severe soft spots so I figured that should be the very next thing on
>> my list. I have ordered a couple of rolls of 1/4 and 3/8 hose so in the
>> next week or so I will start laying things out. My plan is to add an
>> electric pump in line, consisting of running the lines from the tanks, to
>> in line filters, then to the fuel selector switch and then to an electric
>> pump, then to the front.
>>
>> As for the fuel tank sending unit, is there an actual need to replace
this,
>> or will a little clean up and new filter sack suffice. My understanding
is
>> that no one ever gets a true reading anyways, so its not a big concern of
>> mine.
>>
>> Next, I would like to replace all of the rubber bushings in the front.
>> Does anybody have part numbers for these..or is there a convenient kit
that
>> someone has put together to help tackle the entire front end?
>>
>> Any advice is greatly welcomed.
>>
>> --
>> William D. Weyrowski
>> Midland, MI and Surfside, FL
>> 73 - 26' Sequoia
