Track Day Prep (1/2) - Rear Engine Bay Venting
I saw a thread over on another forum talking about opening up the rear engine vents - the ones in between the front tires and the front doors.
-Under hood pressure causes both the radiator and TMIC to loose air flow. Our car has big 'innies' and not so many 'outies'.
-They are in one of the few generally accepted low pressure areas around the hood. The windshield area is a hot topic.
-While the pressure differential will be about the same, these should allow for better flow given the same pressure differential.
-Cheap, easy, and non-intrusive. Little chance for something to go wrong.
-My car kinda felt like a fat kid running a mile at the first track day by the end of each session. I figured anything I can do on that end will help.
-Pop off fender vents
-File down rough edges
-Tape off surroundings, apply some primer and touch up paint
-Dig up metal disks from side skirts
-Put back together
Crappy picture. Pre-filing. Crappy hole saw as well. Still worked.
For the second half of the track day prep, I plan on replacing ~50% of my coolant mixture with distilled water as per a suggestion by Crawford and some other track guys. They lean towards more of an 80/20 water/coolant mixture to help with heat transfer (circulates faster to my understanding). I will have to be careful to add coolant towards winter. I will also sand down the surface of my race pads and make sure they are smooth and good to go. Will open up each caliper for a second just to make sure there is no air in there as well.