Quote:
Originally Posted by mikyFIA
A gas tank in the back and a metal line from that (sending unit) to the mechanical fuel pump on the block.
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Depending on the proximity of your fuel line to the exhaust the vapor lock is possible, but unlikely. Unless you have a fuel pump that pumps sufficient volume, a return line may not really help. It looks like you have a fuel regulator in the pic with the carbs. If that is the case, does it have provision for a return? If so, the increased fuel flow from a return will all but eliminate the potential for vapor lock.
If my fuel line were close to the exhaust, I'd throw on an insulating sleeve before I ran a return. Exception would be a high volume mechanical designed to use a return.