I switched to 15x8 wheels for this year to get better gearing. For tires, I am using 225/45/15 Hoosier R6s. The wheels were only available in flat black so I painted them to fit my theme a little better.
I gutted my headlights to save weight and made an airbox out of aluminum to house my air filter. I then cut holes in the driver's side headlight and sealed it up against the airbox to ensure no pressurized air gets into the engine bay. Also show here is the air diverter I made to block air from going through the location of the stock side mount intercooler, which is being replaced with a front mount intercooler.
I am changing to 850 lb/in springs in the rear. I previously had 550 lb springs. By doing this, I will be able to run my rear swaybar at a softer setting which should reduce my end link failures.
I cut holes in my hood to let extract heat and high pressure air. The aluminum strips in front of the hole create a low pressure area above the openings in the hood to pull air out. They are angle aluminum, so they also add to the rigidity of the hood.
I test fit my new wheels on the car after installing the new rear springs and lowering the car 1".
Pictures from Front Mount Intercooler installation.
I installed a net style window net which is a huge improvement over the ribbon style. It improves visibility a lot. Also added some padding on the door bars for some arm and leg protection.
My new undertray.
Because I cut holes in my hood for heat extraction, I added hood pins to make sure it is locked down in enough places.
Grattan Raceway with NASA June 11 & 12
What a busy and exciting weekend at beautiful Grattan Raceway in Belding, Michigan. Saturday morning started in a way most anyone would not prefer, a trip to the junkyard. During preparation for the event Friday night, I found a failed driver’s side front hub. A steering knuckle assembly with a good hub and bearing was found in a junkyard a couple hours from the track. After getting the assembly and arriving at the track, I unloaded the car and replaced the assembly. By that time, there was only one session remaining for TT. With new Carbotech brakes on the front of the car and new Hoosier tires front and rear, I decided to go out and scrub everything in for Sunday. It turns out, the car was handling so well that without feeling I was pushing too hard for the new tires and brakes I was able to push the car to a second place finish out of five drivers in TTD with a time of 1:32.5 to a leading time by Stefan Kleine in his Porsche 911 of 1:30.6. Mark Domo held on for third place in his Mazda RX8.
Sunday, the car was ready to go and the warm up session already showed an improvement over my time from Saturday, with a new track record and a time of 1:30.3. After this session, I was starting to really see the huge improvement the changes made to the car in the offseason made to the car. The bigger rear springs made the low speed corners very quick by causing the car to rotate extremely well. On the high speed corners, the rear wing came into play and kept the car stable, which really helped out my confidence. After some alignment changes and familiarization with the track I was able to lower the track record two more times eventually winding up with an extremely pleasing time of 1:29.099. Stefan Kleine came in second place and Mark Domo was able to get another third place.
The next event will be at MidOhio Sports Car Course in Lexington, Ohio on July 16 & 17. This will be the real test and the first event for real development of the car leading up to the National Championships at MidOhio in September.
Brake proportioning valve
To make removal of the front bumper cover easier and to support the bumper cover better, I installed 1/4 turn fasteners to mount the rear. ddIt makes removal and installation so much easier!