What size fuel filler hose?

[Okie528]

Hey guys,

I just ordered a new tank for my '72 Blazer (standard 21 gallon Counter part tank Kit) that all the online parts guys sell. I'm replacing a leaking aftermarket 37 Gallon tank that was installed in my truck in 1977, so I assume it will not have factory hoses for me to try to match. Based on the above thread I know I will need 1 3/8" hose (what length) and also if you all could tell me what other hoses I should order to install this tank. Also, the description of the tank says "Does not come with the original Blazer filler neck. Spout may need modifications." what modifications are they talking about? Any advise to make my install go smooth will be appreciated.

Thanks in advance.

[71meangreenc10]

Originally Posted by Okie528

Hey guys,

I just ordered a new tank for my '72 Blazer (standard 21 gallon Counter part tank Kit) that all the online parts guys sell. I'm replacing a leaking aftermarket 37 Gallon tank that was installed in my truck in 1977, so I assume it will not have factory hoses for me to try to match. Based on the above thread I know I will need 1 3/8" hose (what length) and also if you all could tell me what other hoses I should order to install this tank. Also, the description of the tank says "Does not come with the original Blazer filler neck. Spout may need modifications." what modifications are they talking about? Any advise to make my install go smooth will be appreciated.

Thanks in advance.

Okie,

The original blazer filler neck coming off the tank was longer and had bends to meet up with the filler neck that comes off the body. You only needed so much of the hose which was straight to connect the two. The new blazer tanks only have a neck that is about a couple inches long so now you have to either cut the old neck and weld it to the new tank or find a hose that has the right bend to make the angle of the tank and connect to the filler hose from the body.

I am looking at a modification that I think will work, once I verify it I will post it.

Smitty

[tjsblazer]

Originally Posted by Okie528

Hey guys,

I just ordered a new tank for my '72 Blazer (standard 21 gallon Counter part tank Kit) that all the online parts guys sell. I'm replacing a leaking aftermarket 37 Gallon tank that was installed in my truck in 1977, so I assume it will not have factory hoses for me to try to match. Based on the above thread I know I will need 1 3/8" hose (what length) and also if you all could tell me what other hoses I should order to install this tank. Also, the description of the tank says "Does not come with the original Blazer filler neck. Spout may need modifications." what modifications are they talking about? Any advise to make my install go smooth will be appreciated.

Thanks in advance.

Yes 1.375" filler hose and 0.500" for the overflow hose. I am unsure of the exact lengths of each off hand. The fill hose is around 12" and the overflow is likely around double that.

As far as the Inlet spout on the tank this is an issue for everyone. The aftermarket tanks typically just come with about a 3" long pipe sticking straight out. The factory had a U shape bent pipe that fit around the Body mount. One solution people use is to swap the filler inlet from a factory tank that is rusted out to the new aftermarket tank. Others come up with something they fabricate whether with metal or rubber fuel hose.
Either way you need to find a way to get it around the body mount. If it is the typical aftermarket tank it will be an interference point.

If you search this same forum for fuel tank you will likely see some threads on the Tank inlet issues on aftermarket tanks.