Re: Resurrecting a 1951 Henney-Packard Parts Car

Posted by TxGoat On 2023/11/2 12:59:13

I think all US cars had vented caps prior to the canister mandate. Some cars, especially those with V8 & factory AC, had an underhood fuel filter that had a return line going back to the tank. Some of these were of the glass bowl type, such as on circa '59 Buicks and up to '63 Cadillacs, and others, and some later ones were of the steel can throwaway type with an extra hose connection and a restriction orifice to limit return flow. The aim was to prevent flooding and vapor lock in hot weather.