The higher the hp output the more the crank will twist and wiggle around in the motor so you need a damper capable of absorbing this deflection without it's outer ring traveling past the limits of it's bonded construction and shearing.
I-6's have a big long wet noodle for a crankshaft you'd...
The ATI OEM size damper is half the weight of stock so this would explain the lower comparative rating.
I'm guessing the larger ATI is much closer to the stock weight and can absorb the harmonics much better at higher degrees of crank deflection.
LOL nah not slow as such but I see things a little differently than most ;)
For me e-fans have always been a last resort on swaps where I couldn't fit an engine fan as they just don't make sense for all of the above reasons.
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