Does anyone out their have a performance crank pulley? If so what brand and how much power and tq did it free up? Any info would be appreciated.

 

they on ly free up the load from your a/c unit , the n1 crank pulley is very popular.

 

any idea on how much power that would be? I want one that retains all stock components. link for a n1 pulley for my 00 si?

 

not worth it man, the n1 pully is used for race motors,drag, just to free up the revs. Less load =rev faster. the ligthweigth pulley dont do much, get an other power adder. header,intake,exhaust,throthle body.

 

I have all those except the throttle body and everyone has told me ther are not worth it. do you have a different opinion? I have a skunk2 intake mani thats not installed but I don't even know if it would be worth my time to install it.

 

skunk 2 pruduct work good and add a throtle body like a 68mm, it should run better than now, try itr cams

 

wouldn't a 68mm be a little big for a n/a motor? I was thinkin 64. I don't want to have to do valve springs if I do cams so do you know the lift and duration on the itr cams?

 

itr cams are good with your stock retainers, dont recal the specs but trust my they work, even ctr are god

 

CTR cams are better than ITR, and they can be used with the stock valve train. Yes, 68 sounds too big for N/A. Check out Unorthodox racing for their pulleys http://www.unorthodoxracing.com/. You can purchase the pulleys at http://www.stillen.com/.


Edit: You will have to delete A/C to run any of those pulleys.

 

But are ctr cams safe to use with a factory valvetrain? motor has 102k miles.

 

well that is a issue. i guess just go all out and add skunk2 stage 2's and valvetrain

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mtownek9 &raquo;</TD></TR><TR><TD CLASS="quote">CTR cams are better than ITR, and they can be used with the stock valve train. </TD></TR></TABLE>You just have to be careful not to redline your motor alot because you will risk valve float. BTW on the Stillen website it will tell you the amount of HP that the new pulley will free up, I think the set I was looking at awhile ago said between 10-14.