Vent cut behind license plate and fans mounted in the trunk.
The first picture in the series is an idea other people have given me on getting some of the hot air out of the trunk, basically I just cut the fiberglass out from behind the plate and put some spacers on the plate to move it about an inch and a half off the body so air can escape around it. from the outside you can’t see anything any different so that seemed like a good idea to me to do this first thing.
The other pictures are of 2 small 8 inch fans mounted on the inner fenders of the trunk lid. I put them beside the engine on either side so when they are running they are blowing air directly at the engine. I wired them up so they can run with 2 speeds, in series they both run at half speed but are very quiet. They move a surprising amount of air for such small fans. They can be run in parallel so they can run at full speed when I need them, It makes it like a wind tunnel in the trunk when they are on high. I went ahead and finished up the wiring on them and covered it so that part is completely done now except for hooking up a temperature sensor to it but that will have to wait till I find a good one to use. I am thinking I will set the low speed fans to come on when the underhood temp reaches around 120-135 degrees and turn on high when it gets to 160. I figure it will never run on high for more than a few minutes since both fans are able to move 900cfm. There probably isn’t more than 10 cubic feet of air under the hood as tight as everything is, maybe I went a bit overboard with these fans but it is better to be safe than sorry, especially when it is going to discolor the paint job from heat if I don’t do something.