Join Vasser Sullivan Racing mechanic and pit crew member Bozi Tatarevic to go behind the scenes of the Battle of the Bricks IMSA endurance race at Indianapolis Motor Speedway as he works on the No. 14 Lexus RC F GT3.
Welcome to the Bozi Breakdown. TTAC Creator Bozidar “Bozi” Tatarević is a Bosnian-American racing mechanic, writer, and technical consultant born in Sarajevo in 1986. After immigrating to the U.S. in 1995, he learned English in elementary school and eventually turned his passion for cars—fostered by his father Slav—into a full-time career. Laid off from a tech job in 2008, Bozi began wrenching professionally, eventually launching a shop and car export business with his family. His technical message board posts led to a writing career with outlets like TTAC, Motorsport.com, Road & Track and Racecar Engineering.
In 2018, he made his pro mechanic debut at Watkins Glen and now works as a tire carrier and mechanic for Vasser Sullivan Racing in IMSA, with 10 wins and a 2023 GTD Pro title. Bozi also consults via his agency Podium Prime, with clients ranging from race teams to media production companies.
The TTAC Creators Series tells stories and amplifies creators from all corners of the car world, including culture, dealerships, collections, modified builds and more.
A transcript, cleaned up by AI and edited by a staffer, is below.
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Transcript:
My name is Bozi, and I’m an IMSA race mechanic. Today I’ll take you through a day with me here in Indianapolis.
We started early, grabbing coffee and a quick breakfast before heading to the track. I went with a breakfast sandwich, while my colleague Cole chose Flamin’ Hot Cheetos. As we rolled into Speedway, we passed the Pagoda and entered the crew parking lots just as the sun was rising, well ahead of our scheduled 7:15 a.m. arrival.
Things moved quickly as we walked to the transporters. I suited up in my firesuit and safety gear since I wouldn’t have time to come back before the day’s events began. After dropping off my helmet bag in the garage, I joined the rest of the crew on our No. 14 Vasser Sullivan Lexus RCF GT3 to complete final pre-race inspection.
We caught a bit of the F1 race before pushing our car through technical inspection, then brought it back to the garage to warm up the engine. The RCF GT3 runs a 5.4L V8 derived from the production 5.0L engine.
Once that was complete, I welcomed some partner guests and gave a tech talk about the car, followed by media obligations and an interview before heading to pre-grid. Once the car was gridded up, it went out for a recon lap before returning so we could do a pit stop demo for fans. After finishing the demo, we pushed the car to its grid slot and prepared for pre-race ceremonies.
The green flag dropped, kicking off six hours of racing. Rain arrived early, so our first pit stops involved switching to rain tires. Later, as conditions dried, we returned to slicks, making pit lane work a bit less challenging. I also adjusted the rear wing angle to help our drivers adapt to the changing track.
After six hours, the race wrapped up, and the cars returned to the paddock to be cleaned and packed. It took about an hour to move our gear back to the transporter area, where space was tight with everyone loading at once. Teams helped each other to speed things along, and about 13 hours after our arrival, we were packed up and heading back to the hotel.
