Many a pilot has complained about Carb Ice issues with the twin Bing carburetors used on these engines. There are many products on the market that work to a greater or lesser extent.
SprintAero offer a water based system that uses the hot water to push heat into the carb body at one end of the throttle shaft. There is no need to move or change anything around the Bing’s just secure the CNC machined blocks , run the water lines and you’re in business.
With great protection against Ice in the Carb and no additional load on the charging system. This kits works brilliantly with the Full bypass thermostat system