Alfa Romeo Forums banner

1 - 13 of 13 Posts

·
Registered
Joined
·
282 Posts
Discussion Starter #1
I'm pretty sure this must have been done before but I could not find it.

My recently purchased GTV6 starts to leak fuel right by the hose that connects the filler neck to gas tank. After looking around, it appears that the original part is long gone and IAP replacement part is shorter than the OE. To make the issue more complicate, the connector by the neck end is bigger than the one by the tank. This makes replacing the original piece with a straight hose difficult.

Today, I went to a local part store and bought a foot of 2 1/4" ID and a foot of 1 7/8" ID hoses. They are from Gates and sold by the foot. I then syphoned about 4 gallon of fuel from the gas tank. This is necessary to remove any fuel from the connecting hose. I then removed the original connector.

Next, I cut about an inch from the 1 7/8" hose and then 5 inches from the 2 1/4" hose. I slipped the 1-in hose into the gas tank's connector, and then slipped the 5-in hose into the neck's connector. Note that the 1-in hose needs to go in as far as possible from the connector's end to make room for maneuvering the 5-in hose into the neck's connector.

Next, I slid the 1-in hose to the end of the tank's connector and then slid the 5-in hose over the 1-in hose. In effect, the 1-in hose forms a ring to make up for the difference in diameter. To finish off the job, just clamp the two ends. So far no leak. Let's see how long it will last.
 

·
Registered
Joined
·
69 Posts
I used this 57 to 51 mm aluminum reducer (2.25'' to 2'') Revotec Aluminium Hose Reducer 57mm 51mm Fuel Hose Reducer | eBay to connect two appropriate short sections of hose. It makes it very easy to fit and remove any of the two sections of hose when needed. The link to ebay won't last long, so if you need it, look for the seller Demon Tweeks. They're in the UK.

it wasn't cheap but works nicely with no leaks, no fumes, after a few years. Any subsequent hose replacement will be a lot cheaper. I double-clamped the hoses, especially as I could only find a 2'' diameter for the narrower section which was a bit loose ( 1 7/8 may have been preferable).
 

·
Registered
Joined
·
15 Posts
Thank you all for your quick replies.
Both solutions seems to me very easy. I will try to find houses for the "sriswit" solution in my local part store, if it works fine the work is finish. If not, I am thinking about to mechanize, with my lathe, a piece of aluminium 57 and 51 mm as middle section and joint this with the filler neck and tank using apropiate houses.
Thanks for these ideas.
sergio.
 

·
Premium Member
Joined
·
15,978 Posts
Turns out you have to do a filler hose change in the Milanos as well, not for cracking but for being gas permeable. You get a faint (or more) gas smell in many stock Milanos because the OEM hose lets gasoline smells pass through the material and fill the cabin with that smell. Changing the filler neck to a Goodyear gas impermeable hose fixed that for sure. No smell since. All else was in fine condition.

Bottom line, you should make sure that the hose you buy for the Alfetta/GTV6 change is guaranteed gas impermeable.

This change is written up in the BB somewhere.
 

·
Registered
Joined
·
92 Posts
I would like to share my solution to this problem. You can purchase silicone repair tape at most home improvement centers. This stuff is very stretchy and clings to itself very easily. For less than $8, you can wrap your existing hose with close overlapping wraps and it should work to seal up small cracks. It may not work if the hose is totally split, but then again you could rotate the hose so that the crack is on the "top" if it's not very large. My hose was cracked but had not started leaking yet. I wrapped it three years ago and no issues. One tip is to arrange the overlap so that it falls under the clamp. This way the silicone tape cannot unwind itself. Of course you'll need to make sure the hose is clean on the outside before you attempt the tape! The tape does not have an adhesive, it sticks to itself so it's critical to keep dirt off of it while you are winding the tape on.
 

·
Premium Member
Joined
·
15,978 Posts
That self-fusing tape, which I've used on the sailboat, is good for carrying in the 'get home' box along with a roll of duct tape, just in case.

Still, I think that if one is getting cracking in the hose, I'd prefer getting a new better material hose. The older OEM Alfa hoses were never all that long lasting, in my experience. I would worry a little about the taped up cracks getting bigger with time, regardless of the tape, as the material slowly gets harder, as it already has, and continues to disintegrate.
 

·
Registered
Joined
·
69 Posts
filler hose pics

Testing to see if my pictures will post. This is the 51—57mm reducer with standard hoses prior to clamping (old leaky hose also shown–it had a crack along the molding line). The replacement hoses are significantly thicker than the fitted hose it replaces. What i like about this is I can find a replacement anywhere.
 

Attachments

·
Registered
Joined
·
15 Posts
Radicalsquare, could you tell me the inner diameter of the hoses you have used? Next week I will paid a visit to a local specialist in hoses, and I need to be sure about this. I'll machine a reducer like yours in my lathe.
Many thanks in advance.
 

·
Registered
Joined
·
69 Posts
Hello. I used 2.25'' and 2'' hoses for the 57-51mm reducer. "sriswit" said he was able to get 1–7/8'' and not 2'', which might be preferable, but I couldn't find it locally. 2'' was kinda loose on the tank side, and i don't recall how tight or slack they were on the reducer. I used 2 hose clamps for each junction (total of 8) and have had no problems with fumes even when taking hard corners. hope it goes well for you.
 

·
Registered
Joined
·
1,047 Posts
The Alfetta Coupe should have the same diameter on both ends. A GTV6 has different diameters on each end, so trickier to replicate. Here is a copy of the post I just left on another thread here:

Here's a couple of sources you can try in the US for GTV6s. As this part was NLA and many needed fresh ones, I approached Greg Gordon at HPSI in Oklahoma to consider making new ones. His company supplies many rubber solutions for ALFAs. I sent him a sample of a filler neck, a beat up hose, and measurements off the gas tank neck. Within a coup[le of months he was producing new replicas. A few of us placed a group order, and the replies I got from others was that the new ones were an improvement over the originals.

When this came up more recently, I had heard that IAP/Centerline in Denver may now be marketing these hoses purchased from HPSI. The rubber was formulated to handle gasoline. Probably easier than making something from scratch, since each end has a different diameter. Let us know what you find out, and good luck.
 
1 - 13 of 13 Posts
Top