Quote:
Originally Posted by Calum
hmmm, I just noticed the two holes in the crank pulley. They look like weight balance holes. That doesn't bode well for underdrive pulleys. (please don't take this as an opportunity to explain why I shouldn't use an underdrive pulley, that was descussed extensively in another thread)
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EDIT: I see you are talking about the crank pulley, not shaft. But the pulley has 4 holes in it, not two?
The holes in the crankshaft are not there to make it lighter.
They provide a passage of better oil distribution/lubrication.