STILLEN Lightweight Pulleys - Introductory Offer!

[Beak]

define large sound systyem... plz

[EzeebMOS3]

The Altima's have a spring-loaded belt tensioner, no tightening is required for either pulley. That's a carry-over from the older school systems with a mechanical tightening system.

So does this mean that after the pulley is installed we will have to revisit the garage and have them retighten it?

Also any ideas on the installation price?

[Team STILLEN]

define large sound systyem... plz

Robert summed it up very well in another thread, and his expertise in this field will probably be the best advice..

It appears that Stillen's 2.5 pulley is a lightweight pulley, not a smaller "underdrive" pulley. I only mentioned the 2.5 cars because they have a 115amp alternator. Adding an underdrive pulley, with a high powered system, with a factory alternator "could" be problematic. BUt, since Stillen's 2.5 pulley is just lighter, and not smaller, my guess is they should be 100% fine with that addition! Kyle, please correct me if I'm wrong.

Now, as Kyle stated, the 3.5's will be underdrive pulleys, thus reducing a bit of power to your alternator. HOWEVER, the 3.5's have a 130amp alternator, which should be more than enough for small or even moderate systems! But for someone like myself who's pulling over 2000 watts RMS with my three amplifiers, plus running 8 TV's, an underdrive pulley would not be a good idea!

So guys, my guess would be that you 3.5ers are gonna be just fine with the Stillen underdrive pulley, even if you have an audio sytem (except for guys like applebonker who's pulling ovr 4000 watts RMS!

And you 2.5ers will be just fine with the Stillen pulley, regardless of your audio system! Sorry if I caused any confusion, that was not my intention.

[Beak]

[spockrock]

Spock, Josh just explained that it is NOT an underdrive pully. It's the same size and diameter of the stock pully, just made of lightweight material, which allows your engine to spin it faster with less energy thus adding to horsepower.

Repeat... no one has to worry about their sound systems with this mod.

Right read my post I was referring to the 3.5 underdrive pulley

Okay, I can see we're going down the path of confusion, let me see if I can set everything straight.. sorry about that.

2.5L pulley is a standard sized pulley - No underdriving of the accessories, no impact on the charging system. Much lighter weight, less weight the engine has to turn, especially when accelerating, where you will benefit from the light weight.

Right I never said the 2.5 pullies are underdriven.

3.5L pulley is an underdrive (smaller) sized pulley - Underdrives the accessories to free additional horsepower. Should not have an impact on charging for MOST users, but for those with large sound systems, consideration should be made.

Right, and thats what I said, only if you have large sound systems, I have not spread any FUD, in fact I think the underdrive pulley is good mod.

spockrock, I can appreciate the desire to quote numbers against these, and I know you've done the research on other boards, but I'd hate to see misinformation spread incorrectly. The pulley discussed on the other boards was an off-brand, no one had really heard of, and is to my knowledge no longer around. Pulley weights, design of the pulley can all have effects on performance and results. To simply use questionable information and postings from those who claim to be engineers isn't really definitive.

We've sold hundreds and hundreds of sets of pulleys over the years, both underdrive and standard, with overwhelming customer happiness.

Look I appreciate everything Stillen has done, but the numbers are math, and apply to any brand. I understand Stillen is a company and if people want magic beans you will sell them magic beans. But you know as well as I know the butt dyno can lie. I am not asking you to stop selling these, I am not asking anyone with a 2.5 don't buy, but to look at the math. The amount of mass involved and radius of the rotational mass are so small and compared to the mass of the car so marginal.

I do have a degree in engineering, I even wear my iron ring proudly, I am confirming what the numbers say. That being said I am not a stubbon man nor am I perfect, I believe stillen has said you wont see anything on the dyno, take a 2.5 do three runs at the track install the pulley and do three more runs at the track, if the pulley makes a difference. I will apologize to Stillen on Nico, and say I was wrong.

As for the 3.5 underdrive pulley, this is a great mod, and anyone wanting to increase performance I think should get it.

[Team STILLEN]

The first part of it wasn't directed at all to you, you stated the different pulleys and their size correctly, I think some had gotten confused so I wanted to reiterate.

I also wasn't referring to you when I stated "engineers", I meant others in the aforementioned thread.

I just would hate for someone to read some of these posts and take them for absolutes, such as the statement of 2hp in first gear and nothing for other gears. Numbers for dynos have not been established (CVT preventing that for us), so claiming anything is really unfair.

Rotating mass is rotating mass, just like a lightened flywheel. The lighter the object, the less effort necessary.

And yes, we hope that no one is expecting this to feel like a turbo when bolting these up, but they will make a difference, and with every additional performance item added, continue to help improve.

[spockrock]

Rotating mass is rotating mass, just like a lightened flywheel. The lighter the object, the less effort necessary.

Mass can be the same but reducing the radius also decreases the effort, and you are also forgetting about sprung and unsprung weight.

[jungleboogie]

i like how these threads remind me of my vector dynamics courses back in college... of course extremely dumbed down yes, but still not a place i wanna revisit.

[Jose3.5]

Josh, how much would it cost for someone in the Stillen shop to install this?

[Strik3r69]

Josh, how much would it cost for someone in the Stillen shop to install this?

And also josh, i thought the gates belt suppose to be around 15 bucks??

[kyle@stillen]

Hey Guys,

Josh wanted me to jump in here and address the question regarding cost of installation. Basically you're looking at an hour of labor in our shop and most others.

I'll be back to answer more questions but I'm BURIED right now...

[Team STILLEN]

And also josh, i thought the gates belt suppose to be around 15 bucks??

Some can be that low, but for whatever reason this belt is a lot more expensive. We were surprised as well.. I haven't seen it, it might be super long, I'll have to pull one out of inventory and get a look at it.

[zerodeefex]

I know this is a go for sedan guys, but any idea if this fits the 2.5L on the hybrid as well?

[Team STILLEN]

I know this is a go for sedan guys, but any idea if this fits the 2.5L on the hybrid as well?

Untested.. but what I can do is call Nissan for the part number of the pulley and compare it to a non-hybrid.. if they match it will absolutely fit. Function will be the same.

[zerodeefex]

Untested.. but what I can do is call Nissan for the part number of the pulley and compare it to a non-hybrid.. if they match it will absolutely fit. Function will be the same.

Freaking awesome. I hope they match. It is the same engine, just putting out less power since it has the 40hp electric motor as well.

[Team STILLEN]

Freaking awesome. I hope they match. It is the same engine, just putting out less power since it has the 40hp electric motor as well.

Hmm.. sorry guys, the part numbers are definitely different. Can't say specifically what that might mean, we'll have to get one in here, or if someone can take pictures we might be able to tell absolutely one way or the other.

[LongBeachCoupe]

I have the 2.5 Stillen Lightweight Pulley on its way to me with one a new belt as well...

I will have one of my friends instal it, but i am going to try to get as much of a "DIY" installation as possible and I will report my experience and feedback on the pulley asap!

[dangeris]

GO BRIAN GO!!!!

[mrodrig2]

I even wear my iron ring proudly

OT post... very jealous, I wish we got those rings in the US. All we get is a job title that's often confused with people who clean up toilets in schools.

[zerodeefex]

Hmm.. sorry guys, the part numbers are definitely different. Can't say specifically what that might mean, we'll have to get one in here, or if someone can take pictures we might be able to tell absolutely one way or the other.

Where would you like me to take the pics? If you can give me a heads up, I can take a peek around with my camera.

[Team STILLEN]

Where would you like me to take the pics? If you can give me a heads up, I can take a peek around with my camera.

The crankshaft pulley and pulley configuration...

[Team STILLEN]

The 3.5L Underdrive Pulleys are now available! Pricing is the same for the introductory period. $149 through 2/15.. Like the 2.5L pulley, we did a limited run to get as many new applications out as possible, first come first serve.





These are a smaller pulley, you'll need a shorter belt, also available from STILLEN.

http://www.stillen.com/product...ltima

[RobPaulson]

zomgzomgzomg

[dldjros69]

Excellent stillen, you guys rock...

Way to keep making us broke...

Whats next any hints

[Ferguson]

Order placed.

[shmack1388]

just ordered my 3.5 underdrive pully!!. god i cant wait for it to come in

[bhs07c]

Just installed my Lightweight Crank PulleyTheres a bit of difference in the speed it revs and unrevs and the acceleration is definately smoother, however, it wasn't close to the gains I expected but I should have known I wouldn't have seen much of a change when compared to a underdrive pulley. Not worth the cost in my opinion.

[mcheddadi]

Just installed my Lightweight Crank PulleyTheres a bit of difference in the speed it revs and unrevs and the acceleration is definately smoother, however, it wasn't close to the gains I expected but I should have known I wouldn't have seen much of a change when compared to a underdrive pulley. Not worth the cost in my opinion.

thanks for the honest review!

[lilojoj]

Just installed my Lightweight Crank PulleyTheres a bit of difference in the speed it revs and unrevs and the acceleration is definately smoother, however, it wasn't close to the gains I expected but I should have known I wouldn't have seen much of a change when compared to a underdrive pulley. Not worth the cost in my opinion.

alright im probably not getting this now. i think i'd rather save up for some eibachs. my car is flying

[michaelthepsycho]

Well, ever little bit helps