Pulleys Worthwhile?

[moite]

Hi all,

Looking at getting lightened pulleys for my 200sx putting out 240rwkW/500rwNm and just not quite sure about what the benefits are.

The normal pulley replacement kit seems to just be the underdrive crank pulley - is this the most important one?

What I'm trying to achieve is less strain on the engine down low so that it's a little easier off the start - it brings me pain to go as slow as a Barina until boost hits... okay maybe not quite that bad but still.

I see there are also "harmonic balancer" kits which seem to be water and accessory pulleys - are these worthwhile? I assume anything that makes the load lighter is good - as long as it doesn't then lessen the power to the accessories due to the lower momentum of the pulley wheels...?

Thanks in advance for your wisdoms!

[moite]

Hmmm hasn't been whole lot of discussion here! I've had some good info from over at NSCC forums though. Is public forum I believe, but you will still have to register to see:

http://www.nissansportscarclub.org/bbs/vie...2060&highlight=

The basic info is that lightened crank pulleys can be an issue on cars with more than 4 cylinders, and also engines that are not internally balanced - the stock crank pulleys have a dampening/balancing effect on the engine which can be lost by the lighter weight and lack of dampener on most lightened pulleys.

Underdriving the water pump, etc. separately can be a wiser move.

Alloy crank pulleys can also cause premature crank seal wear which stock cast iron ones don't suffer as the seal can bed in better or some such thing.