A carb will heat soak on an engine and the mechanical pump will also heat the fuel. With the OEM pump and carb there is not much that can be done. I would put an electric fuel pump on the firewall, or near the fuel tank. Then I would re route the fuel line so it goes directly to the fire wall and down. Putting heater hose over the fuel line insulates it further. Make sure the carb heat stove system on the air cleaner is not turning on, allowing the intake to draw air from around the exhaust manifold. My preference is to put a "summer" aircleaner on it with a snorkel that draws cold air from beside the radiator or other non heated air. Many times a ducted fan can be used to direct cool air on the carb from the front. This can be switch controlled from the cab to allow situational use. Winter grade gasoline is still in the pipeline and tanks at gas stations. It is substantially higher in volitiles and will vaporlock much easier. I know of no fuel solutions or gimicks that work. I have used all of the above methods at one tome or in combination to cure (successfully) vapor lock. These are not snake oil magnet on the line garbage. Jim
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Today's Featured Article - New Life for an Old Allis - by Tyler Woods. My friend Jon, has an old '39 Allis Chalmers B. He thought it a marginal tractor that had long since served its time. She smoked terribly and never had much power but he couldn't afford another so he was limping along with what he had. Jon's Allis has a small front loader and though it doesn't carry much, it serves his needs. It was the hard starting and low power that made him think it was time to replace the old girl. Jon called me to help him discover why his tractor wouldn't start
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