Pulley Size/Fitment: Z34 vs. R35

sloboi

I apologize if I'm a bit aggressive with my counterpoints. I deal with "factless" arguments a lot, so I get annoyed with them easily.

NOW, with that being said, I admit that my presumptions are rather baseless as well. I am going into this dampening business with two basic premises:

1) That overall, the GT-R and 370Z share a similar engine configuration
-I base this on the apparent similar fitting of the crankshaft pulley, size of shortblock (similar bore, stroke, and intake manifold fitting/size), and of course, an eyeball estimation of width to height ratio of the two engines.
2) That these similarities will mean similar crankshaft vibrations at similar RPM's.
-I base this on...well, nothing. It just makes sense to me that if 1 were true, there is no reason 2 wouldn't be.

Lastly, unless the harmonics of the engine were COMPLETELY off, I still believe that an engineered dampened pulley, at any RPM range within it's designed specifications (which is the same for the 370Z and GT-R), will out dampen the OEM 370Z pulley--which is practically undampened--save the little rubber ring. The added weight of the ATI pulley will also serve to dampen the vibrations by adding additional inertia.

I really don't mind people challenging me, or my ideas. I just don't like it when they make a comment w/o any support. It's like your grade 12 mathematics teacher always said, "show your work."