Razerx

I was considering getting underdrive pulleys

Worth doing?

Which Ones? (Unothodox?)

do i do all 4?

WishIhadaRX7

Depends, what do you want to get out of them?



-HP? Not worth the money, spend it somewhere else.



-Longevity of accessories? Depends on how hard (fast) you drive your car, but prolly is worth it.

Razerx

Ok, i have heard HP gains of 10 -20. Is this all BS?

WishIhadaRX7

It doesn't actually ADD any power, it only frees the engine from the power robbing accessories.



Most people notice a slight difference in acceleration, but that's about it.

Razerx

I am still looking for best deal Quality/price. Do you need all 4 or just the main one. Of course having them all the same color is a nice bling, bling. Any recommendations of manufacturer?

WishIhadaRX7

I think Unorthodox makes like almost all of them, the individual vendors just put their own logos on them.



You don't need all of them, but having them all would increase the benefits.

Razerx

Thanks, wishIhadaRX7. Funny some threads gets tons of comments, others.... well i would have thought 10 people would jumped on about these.

WishIhadaRX7

Maybe everyone agreed with me?

rfreeman27

yes, we did. alt. and main pully are the most popular. the kits that come with the belt require airpump removal

jramosrx7

I've had the pulleys since '93 or so. Tested and kept the prototypes from Rotary Performance.



Negligible to no hp gain. Main benefit is when running the car on-track or at high rpm for extended periods of time. Reduces/eliminates cavitation in the cooling system due to turning of pump slower.