The RE Miata on the trailer was drawn by a CX-9 loaned from Mazda USA and traveled over a distance of approximately 650 miles (1,040 km) for over 13 hours. Okamoto left Los Angeles on August 8 with a friend who lives in California and a staff member from Japan who participated at his own expense. He participated in the F / GMS class, for modified sports cars mounted with naturally aspirated gasoline engines with a displacement of between 2-liters and 3 liters. Thus the thought was that a close-ratio 6MT would allow for further acceleration and he went in expecting it possible to break a target speed of 188 mph (approx. The RX-7 standard 5MT, which was designed based on the premise of long highway driving, has a gear ratio in which the 4th and 5th gear are spread too far apart. For this reason, he replaced it with a RX-8 use 6MT, with a 6th speed of 0.87. His Bonneville Challenge Machine, which swaps the 13B naturally aspirated engine used in the North American specification FC RX-7 into an NA-MX-5 Miata, recorded 174.756 miles per hour (280.2km / h) at Bonneville last year, but struggled with a gear ratio unsuited to the conditions. He brought his machine out to the venue as he has for the last several years. ![]() ![]() ![]() Sumito “Sam” Okamoto, who lives near LA in California, is a self-made Bonneville challenger. This year Bonneville Speed Week, a speed challenge that is held annually on a huge salt lake in the highlands of Utah, started on August 9th.
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