Adding Evaporative Controls to 273 2B
Best advice I can give you is have a look at the 72 shop manual which you can download here
http://www.forabodiesonly.com/mopar/showthread.php?t=132309&highlight=manual,+download
This would be a significant project. Are you ABSOLUTELY SURE you don't have a leak somewhere?
Another aspect may be that the carb/ fuel line is simply boiling over at shutdown and dumping gas into the throttle bores, then evaporating and stinking. It might be that a vapor return system would help or solve it, and this is ALSO a huge help with vapor lock It WILL require some sort of fitting into the fuel tank, or replacing the sender with a "2 line" aftermarket one. (I filled my tank with CO2 from my MIG welder tank, then silver brazed a fitting into the front face of the tank)
After you get that done, and a line run up front, the Wix numbers for vapor return fuel filters are 33040/33041 (5/16 and 3/8) and 33054, which is a 90* angle fitting.
33040/41:
33054:
Here's a screenshot of the 72 shopmanual evaporative control system:
As you can see, back at the tank is a great big expansion/ collector tank, and there's "some" to it. The one line from front to rear is what vents the tank, and if you want a vapor return system as well, you'd need a total of THREE lines front/ rear. One for fuel, one for the carbon can, and one for vapor return.
Best advice I can give you is have a look at the 72 shop manual which you can download here
http://www.forabodiesonly.com/mopar/showthread.php?t=132309&highlight=manual,+download
This would be a significant project. Are you ABSOLUTELY SURE you don't have a leak somewhere?
Another aspect may be that the carb/ fuel line is simply boiling over at shutdown and dumping gas into the throttle bores, then evaporating and stinking. It might be that a vapor return system would help or solve it, and this is ALSO a huge help with vapor lock It WILL require some sort of fitting into the fuel tank, or replacing the sender with a "2 line" aftermarket one. (I filled my tank with CO2 from my MIG welder tank, then silver brazed a fitting into the front face of the tank)
After you get that done, and a line run up front, the Wix numbers for vapor return fuel filters are 33040/33041 (5/16 and 3/8) and 33054, which is a 90* angle fitting.
33040/41:
33054:
Here's a screenshot of the 72 shopmanual evaporative control system:
As you can see, back at the tank is a great big expansion/ collector tank, and there's "some" to it. The one line from front to rear is what vents the tank, and if you want a vapor return system as well, you'd need a total of THREE lines front/ rear. One for fuel, one for the carbon can, and one for vapor return.
