why honda made it 90°?
from what i learned 60° v6 has less vibration, and the main reason those car makers manufacture 90° v6 is to share parts with their V8s.
but since honda has no V8 production cars... so why? lower the center of weight?
any idea?

 

two reasons I could think of (not sure if they are the actual reasons) are the lower Center of Gravity and that a 90 degree would make the engine shorter than a 60 degree.

 

forgot... the shorter engine will make it easier to fit in a short stocky vehicle such as an NSX.

 

The Honda engineers know WAY more about that stuff than I do... that is my answer, and it should be yours as well.

 

I think I remember reading about engine "compactness" of the V6 being important to the designing engineers. Honda also had turbo and V8 versions of the NSX running around at the time as well.