Unorthodox underdrive crank pulley

I wanted to get one of these for my b16 swap. I was gonna try and get the ultra R because I dont have PS and I'm taking a/c out. I read on the unorthodox racing site that the belt needs to be a little longer, and they give a PN for gates belts. Is this belt the same as any honda belt? I guess the only belt driven is the alternator belt (water pump?) Any info appreciated.

i had to get a 28 inch 3 rib for my dx hatch just my input i noticed a difference in acceleration on my automatic i currently have no powersteering and i have the option of putting an ac belt on i think i might when it starts gettin hotter. i bought the arospeed brand one by the way its hella light the box feels empty when you get it from www.speedoptions.com 120 dollars pluss shipping .

perhaps I'm just ignorant, but what good does it do to take the AC belt off?

well for starters when you buy a lightened underdrive crank pulley none of your factory belts will fit and i was too lazy to try and find the right sized one after i made countless trips to the belt store to find one for my alternator. :)

Unorthodox Racing was nice and supplied the right size belt dimensions on their website :p.

Are their any issues I should know about before I buy a new crank pulley? Am I in for odd harmonic problems due to the low weight of the new pulley? All new belts are required, you can't just adjust the tension pulleys? Please help...

I called Unorthodox Racing about harmonics and they said that there should be no issues. I have had the pulley on for 3k miles or so and it hasn't blown up yet and I rev it high. I'm not sure about tensioning the belts, I just shelled out the couple bucks for a new one.

yeah, a 4-banger isn't likely to see a crank failure from removing the tv damper (I know I raised the concern in another thread, but I've had more time to think about it). The possibility does exist, but it's fairly remote. A more likely problem would be early failure of the accessories (due to transmitted vibrations), and potentially some noise (less of a problem with a belt-driven cam than with gears or a chain).