They're also engineered *WAY* past what they need to be for reliability. The spacing between cylinders, the mixing of metals on mounted surfaces, the insistence on getting the maximum horsepower out of every cubic centimeter of displacement. A reliable engine would only need to be 10-15% heavier.

March 21, 2026 - 16:42 UTC

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I remember when Toyota gave us the Mk4 Supra with a 2JZGTE which Toyota over engineered so much tuners were getting deep four figure hp numbers on the dino reliably and all because Toyota wanted to not repeat what happened with the Mk3's engine, and this was also during the Gentlemans Agreement era.
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I wouldn't call that "overengineering". If anything, I would call it "overbuilding", and in support of my point. The blocks of those engines also went into various other Toyotas/Lexuses (Lexii?) outside Japan and were renowned for going *WAY* past 300k miles. They were heavy and built well.
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