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STILLEN lightweight crank pulley

Originally Posted by Musashi Let me chime in and tell you I've had the pulley on for over a month. It's fantastic. I feel a difference in my throttle response

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Old 05-29-2009, 02:29 PM   #1 (permalink)
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Originally Posted by Musashi View Post
Let me chime in and tell you I've had the pulley on for over a month. It's fantastic. I feel a difference in my throttle response and I can't feel any loss in power from my air conditioner. I drive my car daily and drive it on the track weekly. It's an inexpensive mod that you will be able to enjoy the results.

Also, the engine is a lot less harsh at the higher RPMS since I added my stillen exhaust and intake.
You and I have the UD pulley though. Phimosis' skepticism is directed at the lightweight pulley from Stillen that's stock diameter, not the one we have.
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Old 05-29-2009, 04:06 PM   #2 (permalink)
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You and I have the UD pulley though. Phimosis' skepticism is directed at the lightweight pulley from Stillen that's stock diameter, not the one we have.

PS.... The reason I am taking such a critical eye on this issue is that I really want to put a lightweight pulley on my Z..... I'll do just about anything to make it faster and it already has a plethora of Stillen parts on it. I just want to make sure I understand the risk/benefit ratio on each piece before I take the plunge.
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Old 05-29-2009, 03:13 PM   #3 (permalink)
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You're absolutely correct.. I should have been more clear.

The stock pulley is balanced via the removal of material, but is not a harmonic balancer.. please forgive my mistake. But no where near as precise as a billet cut CNC'd piece, hence the NVH ring in the center. You couldn't have it be just the pure cast piece with slag hanging off different areas.

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Old 05-29-2009, 03:22 PM   #4 (permalink)
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so to simplify all this stuff for newbs like me. if i get the lightweight one, WILL IT HURT ANYTHING?
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Old 05-29-2009, 04:10 PM   #5 (permalink)
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Curious on why lightweight vs. U/D for you Phimosis?

(and thank you for your orders.. you're practically a rolling STILLEN billboard!)
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Old 05-29-2009, 06:19 PM   #6 (permalink)
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Curious on why lightweight vs. U/D for you Phimosis?

(and thank you for your orders.. you're practically a rolling STILLEN billboard!)
LOL..... I'm waiting for that damn supercharger!
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Old 05-29-2009, 04:14 PM   #7 (permalink)
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Maybe he's planning to SC in the future?
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Old 05-29-2009, 04:51 PM   #8 (permalink)
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Maybe he's planning to SC in the future?
I kinda am too, long term, but given the cost and complexity of the SC install, it's not like it would be a big deal to swap the pulley at the same time.
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Old 08-02-2009, 09:49 PM   #9 (permalink)
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quick question, is it possible to get both the underdrive pulley and lightweight pulley installed on the car?
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Old 05-29-2009, 04:56 PM   #10 (permalink)
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I still havent installed mine, I may swap it with a UD one.
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Old 05-29-2009, 06:22 PM   #11 (permalink)
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So am I! You have no idea. I get to see the progress and can't talk about it..
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Old 05-29-2009, 07:02 PM   #12 (permalink)
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Aw...sure you can, Josh. We'll be discreet, won't we guys?
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Old 05-29-2009, 07:27 PM   #13 (permalink)
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I'm not saying that some lucky owners that came by picking up product and got the tour haven't seen our progress.. but they signed a release to give up their car if they spoke about it to the forums..
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Old 05-30-2009, 06:29 AM   #14 (permalink)
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By the way, I was looking at the light-weight pullie, (not the ud pullie) and was wondering if you're seeing about 8-10HP from the crank or to the ground. I'd be uber impressed (and probably still skeptic) if it were to the ground.

BTW, hate to dig up a dead horse to kick, but have you seen then RST-V8 putting out 500BHP? 2.4L weighs 90Kg dressed! Talk about power-to-weight! <-- I'd take one of these over a plastic motor any day.
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Old 05-30-2009, 01:07 PM   #15 (permalink)
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Crash, this thread may interest you if you haven't seen it already: Stillen Underdrive Pulley - Review/Pics/Dyno/Vid
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