My Renault 5 GT Turbo had a heat problem in that the heat of the exhurst would boil the fuel in the carb.......I took a fan off a Fiat X1/9 that was used to draw hot air out of the engine bay. The engineering dept of the firm I worked with built some duct-ing & as able to "Dump" the hot air out of the car.

Many 5 GT Turbo owners suffered from "Hot start" trouble........not me !