Good question. But the GY6 engine is "force air cooled" (as are some 150cc air cooled Vespas, Yamahas etc). There is a shroud around the cooling fins of the cylinder and the inlet on the right side of the engine "sucks in air" and ducts it to the head. Its a great and simple solution to ensure that the engine gets the proper air it needs to stay in operating range. However in a lot of stop and go traffic with prolonged stops etc, could cause some heat issues on days like the ones around here in Philly (90+). But that is an extreme situation and one of the reasons to use Syth oil after your engine is broken in. Proper oil changes with a high quality oil is important. Especially since this version of the GY6 uses a strainer and not an paper/medium oil filter like the Genuine Buddy's. I would not think removing panels would be necessary in this heat. There are also enough little slots and vents all over the Like.
