In 1936 Toyota held a contest to create a new logo for their brand, this was the contest winner and it stayed for a very long time. It was later replaced by the logo we see now, but stuck around on the engine blocks of iconic engines like the 2JZ way into the 90s. 
 
I wanted to make a more stylized version of the original Emblem so i foujnd the actual way that these symbols would be hand written in Japanese Katakana.