hi every one ..

i have a Q about the STILLEN Pulleys is it good for the CVT maxima ??

Because I think its not good after 200km !!

any Suggestions ??

 

i have it, running fine. i dont think any 7th gens have over 200km yet, thats quite a bit of mileage

 

because in my country we race to 255km ..and when i race a stock maxima i win but after 200km i see him come to me .. maybe there is far between me and him but i saw him come and come but i got first 255km

sorry about my ENGLISH =$

 

there are a lot of other factors when you race someone such as; did they get a good launch, what kind of tires/rims are they running, how good is the driver, what model Maximas were racing (bone stock S is lighter), etc

 

I understand These cases .. But I do not mean to exaggerate i am the best driver for 2009-2013 maxima " auto" in my country .. we try all the car on D mode .. all the race i go and go but after 200km they come and come

the TIRES both car 19inch

This happened after I installed Pulleys !!

 

interesting. dont know what to tell you man, I've never tracked the car so I've only felt the gains in the speed ranges you felt them in too.

 

Thank you very much to say what you think on the subject .. =)

 

Any lightweight part added onto the rotating assembly MUST be balanced with the crank. Failing to do so will cause premature wear.

 

How can you be so sure you are the best driver in your country who has a Maxima..You know everyone in your country.

I agree with Ghozt: Tires, Launch, Driver, Other Mods, Wheel Balance, Gas full vs Gas on quarter E, etc etc..all have its ups and downs of course!

 

The VQ doesn't benefit from the pulleys like other engines and I've seen a couple do some damage to the VQ. How ever it was due to long term use an multitude of other mods and factors.


In regards to mods, the VQ series is pretty much topped out, anything short of FI is usually money wasted compaired to the gains you get. What kind of racing is it? AutoX?

 

because if there is a race .. as ex maxima vs avalone
i let the owner of maxima try diver with the avalone
if the avalone win after that i drive the maxima after it i win !!

simply example

in my country i have a club for nissan and infiniti

we have
Altima 2005-2013
Maxima 2009-2013
370z
350z
G37
G35
M45
M35
M56
M37

WHAT CAN I SAY MORE

I WANT SAY MORE BUT MY ENGLISH NOT SO GOOD

 

where have you heard of UD/lightweight pulleys damaging the VQ? i have NEVER heard of this. to be clear we're talking about Stillen's UD/lightweight pulley which is properly designed; if you get your pulley from somewhere else I don't know what experience you'll have.

I've read countless forum reviews of the Stillen pulleys on VQ35 engines that they're great and people have run them for thousands of miles no problems. regarding harmonic balancing, the VQ is internally balanced there is no harmonic dampener on the OEM pulley either. if you have questions about the UD pulley and VQ you can talk to Josh @ Stillen, he knows quite a bit about these engines.

and yeah none of the mods we do are really gonna "unleash the beast" or whatever, but they all do add up. realistically if you're modding an import without plans of tuning then I wouldn't expect much in the form of gains down the road, your ECU holding you back at this point.

 

here read this other thread where a bunch of us already discussed the UD pulley - http://forums.maxima.org/7th-generat...t-out-cvt.html

 

^ try google translate for any deeper thoughts

 

LMAO ^

I am about to buy the pulley..but figured I wait after the cold weather to install because its not exactly a nice cool spring day out in NY

 

ill post links when I get home but if you look over at the my350z and g35driver forums you'll find them.

Plus they have been proven to be a waste of money. You dont gain any thing from them. Dyno proven.

 

Never seen an orange 7th gen.... Its different. Kinda like it

 

You're confusing there being gains with the pulley freeing up lost power and allowing it to rev up more quickly which equals quicker acceleration. Here's a quick physics lesson for you that uses a flywheel as the example. The same laws of physics apply to both the flywheel and crank pulley for the same obvious reasons.



"Although a lightened flywheel does not increase horsepower, decreasing mass and rotational inertia will free up power quicker. Inertia is the property of matter resisting a change in motion. The flywheel resists a change in the speed of rotation of the driveshaft, consuming power during acceleration. A flywheel has mass and inertia. It takes torque, the rotational equivalent of force, to start and stop its turning. The rotational equivalent of mass is the moment of inertia. The more mass an object is, the harder it is to get it to start or stop moving. Moment of inertia depends on the mass of an object and where it is concentrated close to the axis of rotation. Think of the flywheel as a disc. This oversimplifies the properties of a flywheel since a flywheel is not a homogenous mass but thicker in the center than the edges. However, it will make calculations easier to understand and still offers a good estimate. The formula for the moment of inertia, I, is: I=0.5mr^2. Holding r constant since the size of the flywheel is not changing you'll notice mass has a large effect on the moment of inertia. Substitute rotational equivalents for straight-line motion variables in Newton's second law of rotation to determine the amount of force exerted on an object. Use torque for force, moment of inertia for mass, and angular acceleration for acceleration.

If moment of moment of inertia (mass) decreases, less torque is needed to keep the acceleration variable the same. If the same torque is applied, the angular acceleration increases. Now that you've gotten the Physics 101 lecture, let's take this to a more advanced level course. Let's apply this to the 1993 Sentra which weighs about 2,500 pounds and makes about 140 horsepower at 6400 rpm in 3rd gear. Using 3rd gear and final drive ratios, the 3rd gear wheel rpm is 1192 (6400 rpm x 1.286 3rd gear ratio x 4.176 final gear ratio). Calculating for 3rd gear torque and assuming a stock tire radius of 175mm (0.574 feet), this gives a forward rate of acceleration of 0.43 g, or about 13.8 ft/sec^2. Angular acceleration, or how fast the rate of rotation of the flywheel is changing, is 24.1 rad/sec^2 (linear acceleration/tire radius). Multiplying this by 3rd gear ratio and by the final drive ratio, the flywheel is accelerating at 129.4 rads/sec^2. The stock flywheel weighs 18 pounds and is about 0.365 feet in radius, giving a moment of inertia of 0.0434. Flywheel torque is the flywheel angular acceleration times the moment of inertia, or 4.8 ft/lbs and the power consumed by the flywheel is torque times angular velocity, or 5.86 hp. Changing the flywheel weight to a 9 pound lightened flywheel from Unorthodox Racing while holding all other variables constant, the flywheel only consumes 3 hp, freeing up 3 hp in 3rd gear. A lightened flywheel frees up more power in the lower gears since it is harder to begin momentum that to continue it. Solving for 1st and 2nd gears, the lightened flywheel frees up 16 hp in 1st and 6 hp in 2nd. Gains in the higher gears are negligible, 1.7 hp in 4th and 1 hp in 5th.
A car with a heavier stock flywheel will obviously benefit more from a lightened one. The Spec V flywheel weighs in at almost 29 pounds, a heavyweight in the Nissan lineup. Switching to the 12 pound Jim Wolf Technologies flywheel will free up 16 hp in 2nd, 7 hp in 3rd, 4 hp in 4th, 2.5 hp in 5th, and 2 hp in 6th. Amazing, the stock QR flywheel consumes 50 hp more than the lightenend one in 1st gear! It revs happier and has more pickup than a Playboy bunny at a Wall Street bar during happy hour! This engine is already a torque monster so invest in sticky tires to make the most traction of that power.

Since a flywheel absorbs some of the energy generated by the engine during acceleration, lightening the flywheel increases the torque on the driveshaft since less energy is used to accelerate it and more is used to turn the drivewheels. Keep in mind it's not just how much mass is removed from the flywheel but where it is removed. The concentration of mass affects how much resistance the flywheel offers to changing rpm. Rotational inertia increases with the square of the distance of the axis or rotation. Removing weight on the edge of the flywheel is 4 times as good as from the midpoint between the center and the edge. Finally, a flywheel will not show much of a gain in horsepower on a dyno because it doesn't increase fuel or air and can't increase horsepower. Remember, you're not actually improving your car's power, just how quickly it can get to that power. An inertial dyno will show gains by the engine reaching a predetermined rpm sooner with a lightened flywheel. "

 

Freeing up power is different than gaining but I doubt its noticeable. Last time I had luck with a pulley was on My SR.

 

I have the pulley system and i love the quick response i get from it....

 

I have it too. I posted on a thread early 2012 on the install and performance change.

Car revs quicker and you can definitely notice the faster pull. The pulley doesn't give any more crank hp. It allows more hp to transfer to the wheels.

Great easy and quick mod with decent performance gains.

 

Thanks for the reviews..I shall purchase this mod next then! after my strut bar!