Reply To: Eighty Degree “V”””

[Randy Roberson]

I opine in general here: while the 60 degree included angle is technically perfect in terms of even firing for the V-twelve, often compromises are made for other reasons. In this case, perhaps making more room in the included angle for the manifolds, at the expense of very minor vibrations. Ease and expense of manufacture could also be factors. A search of SAE technical papers often reveals a design analysis of a new engine of significance authored by the proud “father”” (designer). I will search and see what there might be.”