Re: Fuel Pump conversion for 1930 733

Posted by Tim Cole On 2015/5/8 15:19:09

The usual method is to bypass the vacuum tank completely and go directly to the carburetor. However, this also requires a new needle and seat to work properly because the vacuum tank is gravity feed.

The vacuum tank can be repaired as noted and will work without the need for cheesy pumps. I personally like the vacuum tank because those cars can sit for years and years and years and still run whereas fuel pumps break.


It does, however, require a good clean tank and the pickups in those cars develop pin holes that suck air, so your problem may not be the vacuum tank at all. As well the fuel lines need to be air tight. I always used Permatex #1 hard setting sealer on the fittings so the they would seal without excessive force although Permatex #2 will work as well.