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Old 12-08-2014, 09:00 PM   #9
mike the snake
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What are your thoughts on the warnings and reports of failures from lightening both ends of the engine? I've gathered it seems OK to lighten one, or the other, but not both, something to do with harmonics and pounding bearings.

I ask because most people looking to lose weight are likely to get both lightened flywheel And lightened pulleys, and I' won'der if they might be setting themselves up for possible premature wear/failures.

I don't know how much actual proof there is to these claims, but I know a lightened flywheel makes a MUCH bigger difference in rotational mass, throttle response, so much so that the lightened pulley improvements are negligable in comparison.
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