My friend bought a ebay underdrive pulley thats similar to this
http://cgi.ebay.com/ebaymotors/1992-...#ht_2362wt_934

he never used it so he gave it to me and i was wondering if its something to use over stock pulley on my 95 d16z6? I know most things from ebay are crap but i'm wondering about this.
And is all honda motors externally balanced or internally balanced?

 

DO NOT I REPEAT DO NOT USE THAT ON YOUR MOTOR!!!!!!! you will blow it if not fully balanced

 

Not only will it not make a difference in performance but it will more than likely cause reliability issues.

 

Ok thanks, I put it on before winter and haven't drove it since the snow hit because the tires are crap and i got a truck so this spring i will take it off and put the stock one on.