considering one of these but in the description it says SOHC only.. would it fit my ZC? also how easy is it to change the pulley.

http://cgi.ebay.co.uk/88-91-Ho...wItem

 

the crank bolt is the only hard thing to get off. you have to have a decent impact gun to get it loose. Although ive seen it done with a 3/4 inch brakerbar with a 5 foot long pipe extending it. while someone held the crank still with a chain wrench.

I put one of that style pullys on my b i like it. im pretty sure you want a single over head cam pully for the ZC but im not sure because there are a bunch of ZC motors.

 

waste of time

 

you don't need a crank pully. The oem crank pulley may be heavy, it is. Yet, the oem crank pully is also harmonically balanced, which doesn't create a lot of vibration compared to this aftermarket one.

you might free up enough rotating mass to gain 1 whp, maybe a little more... but the stress on you're bearings is not a considerable trade off.