I have an 07 tc with an ap lightweight crank pulley. I have a few questions that i need answers to please. First i want to know if i can use the nst lightweight water pump and alternator pulley kit with the ap crank pulley, if so will i have to change the belt? Second, if i cant do that set up i will purchase the nst full pulley kit which requires a new belt right? Also i checked out dezod website and that kit shows for n/a models only. Will it not work properly for turbo applications or can i still use it if i have a turbo installed? Finally, what would you guys recommend if i am able to do either one, should i just get the full nst kit or should i just get the water pump and alternator pulley kit with my ap crank pulley? Which one will i see more hp gains? Thanks

 

okay, you can use the other nst pullys, since the alternator pully is a 20% overdrive, and your ap crank pully is stock size, your altnator will put out 20% more power than before, which is good if you run alot of stereo stuff, but it can cause it to overload and burn out. you can also use the lightweight water pully, it is stock size and will not have any complications.

if you change the size of any of your pullys, you will need a new different sized belt.

it says for n/a applications mainly because superchargers compressures are driven by the same belt, and the crank speed determins how much boost is made, so if you change pully sizes, it will change supercharger psi levels which can be bad if it is not tuned right.

you can use them with turbos just fine, turbos are not run by pullys and belts like superchargers are.

 

So i can use ap crank pulley with the other nst pulleys and i won't have to change the belt right?

Also will i see more hp gains that way or will i see more if get the whole nst set up with since they use an underdriven crank pulley?

 

okay, you have the ap pully, it is the same size as the stock pully, so you did not have to change your belt. the nst water pully lite is same size as stock, but just lighter again, you can use the same belt. the alternator pully however is a 20% overdrive, which means it is smaller, therefore, you would need a new belt.

as for more whp with a whole nst set up, it would be an absolute minimal difference since you already have the lite weight one.

but the idea is you use the 20% underdrive crank pully, with the 20% overdrive alternator pully so that you even and maintain a stock voltage with the pullys. but with those you would need a new belt too.

the optimal hp gain would be 20% underdrive crank pully+20% overdrive altnator pully+waterpully lite.

that would be optimal, but not much a difference since you already have a crank pully. you can also get the water pully lite and not have to get a new belt and make alittle more power if you want though.

 

So what belt do i need if i get the nst kit and where can i buy it?

 

When in doubt, it would be best to go to the source. NST is on AIM, screen name NSTonAIM.

The NST alternator and water pump pulleys do NOT require the use of a new belt. The OEM belt will work fine with these pulleys.

The NST underdrive crank pulley does need a new belt. Belt number K06747.

The NST underdrive crank pulley can be used with either n/a or turbo cars. The more power you start with, the more power NST pulleys will free up.

NST FTW

 

Can you actually feel a difference with these pulleys?