lightweight pulleys

[94_AcCoRd_EX]

Originally posted by nonovurbizniz
just fyi there is a big debate over whether or not they damage the engine and accesories...

A. Underdriving an alternator is bad for the elec. system... especially if you have a aftermarket stereo...
B. The aftermarket pulleys are un-balanced... this can cause SERIOUS problems in the long run...

that's about it...

I have no personal experience though... and lots of people get them w/o probs.... but others blame spun bearings on theirs....

I don't think that the AEM set will harm the car. The pulleys are balanced... what you are maybe thinking of is the Unorthodox Racing kit that comes with the crank pulley. This pulley does not have the harmonic balancer and may cause damage.

You say that underdriving the electrical system is bad, which it is, but you have to remember that these ill effects are only happening at idle. After you hit the gas, the effects are pretty much unnoticable. If you have a big system, I'd stay away from them though.