I FINALLY ORDERED MY STILLEN CRANK PULLEY FOR MY 3.5!!!

[terrellshedrick]

I HAD A CURIOUS QUESTION FOR ALL THE GUYS WHO KNOW ABOUT GAINS?

SINCE I ORDERED THE PULLEY, PLUS I ALREADY HAVE MY GREDDY TI-C EXHAUST + AEM COLD AIR INTAKE. I WANTED TO KNOW WHAT MY POSSIBLE RANGE OF HP WOULD BE? KEEP IN MIND (AUTOMATIC / TRIP TONIC) PLEASE GET BACK TO ME WHEN POSSIBLE THANKS!

[Ricko]

Maybe 10 at best?

[jdeb101]

Why does your rear end look raised??

[Throckmorton]

I see on the Stillen website that they only offer an underdrive pulley for $180.00, and the new drive belt for $40.60. Is this what you purchased?

Underdrive Crank Pulley

Applications:2008-2009 Nissan Altima Coupe 3.5L2007-2009 Nissan Altima Sedan 3.5L2009-2009 Nissan Maxima 3.5L

OEM Pulley Weight: 4.32lbs

STILLEN Pulley Weight: 1.00lbs

Approximate Underdrive: 20%

From the Stillen website: Up to 80% lighter weight than stock steel and up to 10% lighter than other aftermarket pulleys, we’ve seen power gains of up to 10+ HP at the wheels.

Are you planning to install the pulley yourself, or have a mechanic do it?

Let us know how it goes for you.

[terrellshedrick]

i was trying out some volk racing rims my boy had for his 09 gt-r but they didnt fit.

[terrellshedrick]

u got me wrong. i wanted to know the total amount of horse power that i had with everything included. AEM COLD AIR INTAKE+GREDDY TI-C EXHAUST+UNDERDRIVE CRANK PULLEY= WHAT?

WOULD YOU KNOW

[terrellshedrick]

ONE OF MY BOYS ARE GOIN TO INSTALL IT FOR ME FOR FREE BUT IMA PAY HIM A LIIL TIP

[dangeris]

Is it me or does it look like you have air shocks in the back..

[Throckmorton]

I am of the opinion that you will never 'feel' the difference that this pulley will make. I think all you are doing is slowing down your A/C compressor, your power steering pump, and your alternator by 20%.

The Altima 3.5 is rated by the factory as having 270 HP @ 6000 rpm. Will the addition of the new pulley allow you to rev your motor to even higher rpm's?

I realize that the A/C, P/S and alternator are parasites, and drain HP from the motor. It does take horsepower to spin them. How much HP and at what rpm is the question.

I am in no way bashing Stillen, as I know they are a first class organization. I know they make quality products, and have a very good reputation.

Stillen's comment on their website that " we’ve seen power gains of up to 10+ HP at the wheels." to me is meaningless taken at face value.

Questions that need to be asked of Stillen are:

What vehicle got 10 more HP? What size engine got 10 more HP? What belt driven accessories did the engine that 'gained up to 10+ HP "have? A/C, P/S, or did it only have an alternator?What other modifications did this engine have?Was the engine factory stock?

Where are the dynamometer test results that prove the claimed horsepower gain?

Specifically, what HP gain was observed in a L-32 Nissan Altima 3.5 V-6?

Notice that Stillen does not claim a specific HP gain, only a general statement.

Here are some questions that you should be asking yourself about this pulley change:

Did Nissan put a 4.32 lb pulley on the end of the crankshaft, instead of a lighter 1.00 lb. pulley, because it acts as some type of harmonic balancer?

Will this pulley change void my warranty?

Will this pulley subject my engine to undo stress?

Good luck, and I hope this works out for you.

[terrellshedrick]

i know i forgot why that was like that. the volk rims would of looked real good if they fit. he had the the new GTR THIS IS A PIC OF HIS CAR AT SEMA THIS YEAR IN LAS VEGAS AND HE JUST BOUGHT OUT THE CARBON FIBER COMPANY "BULLETPROOF" THE ONLY BAD THING IS THAT THEY DONT HAVE ANYTHING FOR OUR CAR. I WILL ASK HIM IF THE COMPANY CAN START PRODUCING PRODUCTS. PLUS HE ALREADY HAS ALOT OF SPONSORS AS YOU CAN SEE ON THE CAR. PLUS HE GOT A CUSTOM TURBO AND HE IS PUSHING 900+ TO THE WHEELS!

HERE'S HIS SEXY BEAST.

[terrellshedrick]

THANK YOU FOR THE INFORMATION. I APPRECIATE IT.

[Team STILLEN]

I am of the opinion that you will never 'feel' the difference that this pulley will make. I think all you are doing is slowing down your A/C compressor, your power steering pump, and your alternator by 20%.

The Altima 3.5 is rated by the factory as having 270 HP @ 6000 rpm. Will the addition of the new pulley allow you to rev your motor to even higher rpm's?

I realize that the A/C, P/S and alternator are parasites, and drain HP from the motor. It does take horsepower to spin them. How much HP and at what rpm is the question.

I am in no way bashing Stillen, as I know they are a first class organization. I know they make quality products, and have a very good reputation.

Stillen's comment on their website that " we’ve seen power gains of up to 10+ HP at the wheels." to me is meaningless taken at face value.

Questions that need to be asked of Stillen are:

What vehicle got 10 more HP? What size engine got 10 more HP? What belt driven accessories did the engine that 'gained up to 10+ HP "have? A/C, P/S, or did it only have an alternator?What other modifications did this engine have?Was the engine factory stock?

Where are the dynamometer test results that prove the claimed horsepower gain?

Specifically, what HP gain was observed in a L-32 Nissan Altima 3.5 V-6?

Notice that Stillen does not claim a specific HP gain, only a general statement.

Here are some questions that you should be asking yourself about this pulley change:

Did Nissan put a 4.32 lb pulley on the end of the crankshaft, instead of a lighter 1.00 lb. pulley, because it acts as some type of harmonic balancer?

Will this pulley change void my warranty?

Will this pulley subject my engine to undo stress?

Good luck, and I hope this works out for you.

You're posting in multiple threads, I'll try to keep up.. and answer the questions as you've presented them.

If you have the chance to drive a car with the pulley installed, you will feel the difference, as many people have. It's reducing the rotating mass on the crank pulley, most people describe the sensation as it "revs faster".

The factory rating of 270hp @ 6000 rpm is describing the RPM at the peak of it's horsepower performance. The rev limiter is controlled by the ECU, and is unaffected by the installation of a pulley.

Anything that is connected to the motor and needs power to turn is going to rob the driveline of horsepower. The pulleys free this up in the exact relation to the power needed from the accessories (in the underdrive configuration).

Thank you for the kind words regarding STILLEN.

Lightweight and underdrive pulleys have been used for years for countless vehicles, and are regarded as a nice upgrade in line with the typical bolt-ons. We did not dyno the 3.5L Altima, the vehicles we've done development on have been CVTs, which will not provide a consistent dyno run.

Most do not pay the expense to specifically have the pulleys dyno'd.. more likely to do a combination of parts, exhaust, intakes, headers etc, which explains the lack of specific dynos on each vehicle.

The 3.5L engine in the Altima is internally balanced, and does not require a harmonic balancer. If you look at the OEM crank pulley, you will see that the steel pulley does contain a rubber ring separating the outside area from the inside, which actually provides some NVH (noise, vibration, harshness) from actually heading back into the engine, due to the cast design. With a perfectly balanced aftermarket pulley, this isn't a concern.

Regarding your warranty.. this is similar to typical bolt-on accessories offered from the aftermarket. It's been discussed a 1,000 times over, I won't rehash it, except to say there are laws in place to help unfamiliar dealerships from voiding warranties regarding non-OEM parts. We have a tremendous relationship with Nissan, and all of our parts are available and installed at hundreds of dealerships across the country, and these pulleys are no different.

This pulley will not add stress to your engine, it is in fact increasing the efficiency by removing rotational mass from the driveline, hence the performance increases. The pulley is CAD machined from a solid block of aluminum, and is perfectly balanced.

That was a lot of typing.. I appreciate your questions, and hope I was able to shed some light on this for you.

[Throckmorton]

Josh@Stillen,

You are to commended for taking the time to respond to this thread.

Your candid answers are much appreciated. You have cleared up a few misconseptions that have been spread on these forums.

You and your company are first rate.

Keep up the good work.

[Team STILLEN]

No problem at all.. happy to answer any questions we can. There is a lot of R&D that goes into product development, and perhaps at times we don't do enough to explain some of what's going on to those that want a more detailed explanation.. so I'm glad you voiced your questions, and I'm sure others reading will also benefit.

[rjdmmfl1]

JOsh, 1st let me say please excuse my ignorance. My niche is in car audio/video... much of the mechanics is foreign to me...

My question is, is the Stillen crank pulley an underdrive pulley? i.e., will I lose power to my other components by installing this pulley. I've heard that its not a good idea to install an underdrive pulley if you're running a heavy duty stereo system... do you think my aftermarket sound system would be negatively affected by installing the Stillen pulley?

Thanks for any light you can shed on this!

[LongBeachCoupe]

Sheeeeeeit... Doc I am surprised to see you asking questions instead of answering them!

The 3.5 pulley IS underdriven (2.5 is not) and WILL take some of the juice from your stereo... Will it be noticeable is the real question....

None of the guys have reported any issues with power that I have read, but none of the guys have as much juice running as you do, but they also dont have a good battery either.

The final result: Not sure... but I think with your battery, and a cap, you should be fine.

[rjdmmfl1]

Sheeeeeeit... Doc I am surprised to see you asking questions instead of answering them!

The 3.5 pulley IS underdriven (2.5 is not) and WILL take some of the juice from your stereo... Will it be noticeable is the real question....

None of the guys have reported any issues with power that I have read, but none of the guys have as much juice running as you do, but they also dont have a good battery either.

The final result: Not sure... but I think with your battery, and a cap, you should be fine.

thanks LBC.. couldn't remember if the stillen 3.5 pulley was an underdrive pulley or not.... and no, I can't afford to have ANY less power going to my system... one thing I have found out the hard way is that our car does NOT like to be underpowered! It is VERY, VERY sensitive to correct voltage... and when the voltage is off, a number of things do not function correctly...

I have recently discovered that having 7 monitors running at one time , all the time is NOT good for the electrical system.... I've drained my battery 3-4 times like this... at first, I thought it was the system itself and the 2000+ watts of sound... but that's not it... its the phucking monitors.... so I no longer drive with all of the monitors on, not even the rear quarter panel monitors.... I think the monitors without the system would be OK, and the system without the monitors would be ok... but the two in combination are wreaking havoc....