[TR] crank pulley

[terryrs at comcast.net]

Curious:  Timing the engine on the TR3A, I noticed a chunk is missing, broken off.  Doesn't seem to affect the ability to turn the belt, though.  

I know the original fan was balanced.  So, my question is, would a piece that's maybe two inches wide by maybe 1 deep, affect crank balance such that it causes much harm?  ...At a minimum, can I drive another few weeks before snowfall without damage?

Terry Smith, '59 TR3A
New Hamsphire