What is a "vented" gas cap?

[Hawklover]

Can one be utilized on a Studebaker Avanti?

[Dwight FitzSimons]

I guess, if one used a vented gas cap, there would be the possibility of gasoline coming out of the hole (in the gas cap) and down onto the paint on the quarter panel. I had an Avanti once to which that had happened. The paint in that area was ruined. That would probably happen only when the gas tank is full. I assume that is the reason the Avanti's gas cap, unlike the Lark & Hawk, is unvented.

You may have the same problem that I have: gas fumes in the cabin. I haven't resolved that problem yet on my '64.

--StudeDwight

[Hawklover]

I guess, if one used a vented gas cap, there would be the possibility of gasoline coming out of the hole (in the gas cap) and down onto the paint on the quarter panel. I had an Avanti once to which that had happened. The paint in that area was ruined. That would probably happen only when the gas tank is full. I assume that is the reason the Avanti's gas cap, unlike the Lark & Hawk, is unvented.

You may have the same problem that I have: gas fumes in the cabin. I haven't resolved that problem yet on my '64.

--StudeDwight

Dwight for years I have chased a problem that a dozen folks have attempted to solve, all to no avail. Every-time I drive my Avanti at the end of the day I need to wash my clothes and shower, why?...........exhaust stink!!!! Trust me I have done everything from new trunk lid gasket, tighten the trunk lid when it closes, brand new SS exhaust system, closed all the holes in the fire-wall, replaced many times the exhaust manifold to exhaust type gaskets with the FoMoCo type.............Nada. Even pulled the gas tank out and spot welded all the the places the baffles are prone to weep. Just have learned to live with it.

[Hawklover]

PS only one time since 1967 did the gas actually come out of the vent hose from the gas tank to the hole under the car.

[garyash]

Most Studebaker cars have a vent in the filler pipe, don’t use a vented cap. However, for reasons I don’t understand, Wagonaires don’t have a vent in the filler pipe and do require a vented cap. If you drive a Wagonaire some distance after filling the tank and don’t have a vented cap, the tank will soon be under vacuum and the tank will collapse. I can testify that this will happen!

[64studeavanti]

Dwight for years I have chased a problem that a dozen folks have attempted to solve, all to no avail. Every-time I drive my Avanti at the end of the day I need to wash my clothes and shower, why?...........exhaust stink!!!! Trust me I have done everything from new trunk lid gasket, tighten the trunk lid when it closes, brand new SS exhaust system, closed all the holes in the fire-wall, replaced many times the exhaust manifold to exhaust type gaskets with the FoMoCo type.............Nada. Even pulled the gas tank out and spot welded all the the places the baffles are prone to weep. Just have learned to live with it.

Did you try sealing the hole under the rear seat? As near as I can tell, it serves no purpose.

[8E45E]

Most Studebaker cars have a vent in the filler pipe, don’t use a vented cap. However, for reasons I don’t understand, Wagonaires don’t have a vent in the filler pipe and do require a vented cap. If you drive a Wagonaire some distance after filling the tank and don’t have a vented cap, the tank will soon be under vacuum and the tank will collapse. I can testify that this will happen!

1962 was the first year for the Lark/Lark types to have a filler-pipe vent. Unlike the sedans, the wagons for that year probably also used a vented cap.

Craig

[Hawklover]

Did you try sealing the hole under the rear seat? As near as I can tell, it serves no purpose.

Yes done many years ago! Another place mice can sneak into;-(

[62champ]

This one came off my 1960 Lark - not original Studebaker but it worked for the time I used it.