hey everyone, just thought I would share this link with you all...

I have had some of these pulleys on my cars for several years with great results and there are now some stuff for the Scion tC available...

NST, www.NonStopTuning.com 8)


-Quoted from NST-

Crank pulleys, attached to the outside of the crankshaft, are the source of power for a car's accessories. The alternator, power steering, water pump, and air conditioner are all belt driven units, attached to the crank pulley, that use horsepower from an engine to provide their own services. Underdrive pulley systems increase an engine's horsepower by reducing the power required to drive the external engine accessories. By replacing factory pulleys with carefully resized units, the accessories are slowed enough so that their performance does not suffer, but just enough so that more horsepower is sent to the wheels and put to the ground. Where horsepower should be!

Another great benefit in replacing factory pulleys with underdrive units is reduced weight. Factory units, also referred to as OEM, are generally constructed from steel or cast iron. Pulley systems like those found at NonStopTuning are constructed of aircraft quality aluminum, making them extremely durable while at the same time much lighter than their steel counterparts. This increased weight reduction results in less rotating mass on the engine's crankshaft which drastically increases the engine's ability to rev up to speed faster. Better throttle response = big grin on a driver's face!

Hope this is useful info for some fellow scion tuners :)

High quality 6061-T6 aircraft aluminum
Each pulley tested and balanced to high tolerances
Hard anodized for exceptional durability
One piece construction, Reduced belt slip
One year warranty, Built in the U.S.A

Weight reduction
- Average of 60% - 80% over stock!

Increased horsepower
- Average of 6-10 wheel horsepower!

Lower ET's & higher trap speeds
- Average of .25s & average of 2MPH!

very nice for $99, not available until June 15th though. I think I'll be getting it.

Looking for more power mods and to free up untaped horse power, I have this thread marked to watch.

wow thats going even further with the engine....

dont they cause engine failure?

good find. will this pully reduce the alternator output?

dont they cause engine failure?
If you're not kidding (I never can tell around here) then the answer is "no". I have heard of cases where installing an underdrive pulley has caused problems, but the problems were either with the engines to begin with (and the underdrive pulley just added to it) or the pulleys were manufactured incorrectly.

99% of the time, an underdrive pulley is a safe and easy addition to an engine. Unless it is a stock size aluminum replacement pulley (which technically wouldn't be an underdrive pulley) then it will spin the alternator, A/C compressor, water pump and power steering pump a little slower, but it shouldn't make a difference if all those things are functioning properly to begin with. Also, the main gain from the pulley is due to it being lighter than stock, and not because it spins everything slower.

Underdrive pulleys do spin the accessories at a slower rate, so theoretically the alternator output would be reduced. The reduction however, will not be so dramatic that there will be any noticeable loss in power output from the alternator or any other accessory. Sometimes people with VERY high output audio or video systems go with bigger alternators. Another option would be to swap a different pulley for the alternator to make it spin faster, but again this is not necessary unless very very high levels of watts are being run.

As far as pulleys damaging rotating assemblies in the engine block, in my opinion this is an age-old, but very highly spread myth! People who support the theory do make very good theoretical arguments, but I have never seen anyone that I know of, having problems as a result of a crank pulley. I have had crank pulleys on two different toyotas for at least 50,000 miles with no ill effects. I have also seen several friends of mine run these NST units on their 240SXs, MR2s, and Civics.

I've heard lighter pullies can cause a rougher idle, is there any truth behind that?

and my AC is underpowered as it is, don't want to add fuel to the fire. Whenever I turn on my AC I can feel the car shaking at idle more than it was before because of the added strain on the engine.

nice find, i think i will order one, not bad at all for 99.00

I've heard lighter pullies can cause a rougher idle, is there any truth behind that?

and my AC is underpowered as it is, don't want to add fuel to the fire. Whenever I turn on my AC I can feel the car shaking at idle more than it was before because of the added strain on the engine.
Well, you'll actually have slightly less drain on your engine, so it might not shake as much at idle (or it might have no noticable difference.) It definitely won't make it shake more. The problem with the A/C isn't that the compressor doesn't spin fast enough, it's probably that the system is rather small and takes a while to cool the car down. I really don't see any downside to the underdrive pulley.

Also, if you worry about the accessories not spinning fast enough, consider how much of your driving is done above idle. Overall, the pulley shouldn't harm anything by spinning those things slightly slower taht small portion of your total driving time.

not to get off topic, but i was wondering if the Prius' A/C compressor would mount up...it's not belt driven, all internal electric...

i think i'd want to see dyno sheets with these pullies first before buying

Theres been plenty of proof with just about all cars from camaros and mustangs to civics that show pullies will increase power. Not so much by themselves, but when combined with other mods it can make a difference well worth the price.

awesome find but for gods sake dont let oldman see this post.

I've already read it, I've had my say. I build performance cars and know engines, I've already told you I let the performance of my car do the talking.

Bearing busting mickey mouse el cheapo power pulleys arn't on my ride. If I want to find 10x more inertial mass reduction, I'd buy a light weight flywheel which at least does not destroy the bearings of the engine. Simple toys for simple boys, :silly:

ya know i was merly joking, but you coming on here insulting people is getting old.

Ive read what you have to say oldman, but one thing you are forgetting is that these pulleys usually dont replace the engines harmonic balancer. they bolt directly to it replacing the heavy pulley that was there. If they actually replaced the harmonic balancer, I would agree with you...but from what Ive seen on pulleys ive used myself and seen on other cars, the harmonic balancer stays. In a lot of ways, this will make the harmonic balancer work more efficiently as it doesnt have to help balancing the heavy pulley itself.

i thought that Inline 4's are already balanced?

The tc runs a combination harmonic balancer and main crank pulley, I'm 98% sure that any "power pulley" made for the tC will replace this.

The harmonic balancer is not for reciprocating weight balance, it is deign to cancel crank based harmonics out, these harmonics destroy soft parts due to the ringing (propagation of sinusoidal harmonic waves) through the crank. Parts that fail in general are: crank driven oil pumps, main bearings, rod bearings, front timing chain, any gear attached to the crank. In specific to the tC this would include the ultra small timing chain and the plastic gear used to drive the counter rotating shafts in the crank case. Ringing is much more pronounced on larger, long stroke engines with a steel crank: read that as a tC.

I have a full post on the subject and it should be noted that pulley can easily void at least the engine warranty straight off and may void other warranties such as any electrical device, cooling device, or air conditioning device, or power steering….. near endless.

i'm waitin for unorthodox racing to release theirs

The tc runs a combination harmonic balancer and main crank pulley, I'm 98% sure that any "power pulley" made for the tC will replace this.

Then I agree with you 100%. My camaro pulley was a bolted onto the balancer...if the balancer is removed, then no deal for me.

i thought that Inline 4's are already balanced?

As long as the individual part ie: pistons, and rods are balanced, the crank is spun balanced without weights, this is what is considered a balanced engine. But I'm sure oldman knew that already, or we've all fallen for his ruse as online posser of knowledge

As long as the individual part ie: pistons, and rods are balanced, the crank is spun balanced without weights, this is what is considered a balanced engine. But I'm sure oldman knew that already, or we've all fallen for his ruse as online posser of knowledge

:rofl: :rofl: too funny at least I have a "ruse of knowledge" you sir on the other hand are um completely and totally WRONG. I think I'll pick "ruse of knowledge" vs plain wrong any day. :loser:

http://www.centuryperformance.com/balancing.asp

If you read you will find the crank is spun balanced with bob weights. :doh:

my point being you don't have to use bobwieghts on an inline four cylinder crank, which, was in response to the quote in my first reply... but I'll repeat it slowly for you. The rods and pistons do get balance. The crank, along with the flywheel, crank pullys, and anything else that is on the crank is spin balanced without bobweights. That clear enough for you or do I need to write a disertation about all three degrees of hamonic balance on every posible engine configuration. :no:

Agency-power is comming out with a TC pulley soon, I'll post more info as I get it.

www.agency-power.com

Thanks Chico I will check them out :bow: .

Oldman and Seven53, I have done my fair share of American building, I would agree that both are veterans in the engine world and can offer lots of wisdom and advice. Not everyone is as knowledgeable as we would like to be with engine tuning and rely on people such as you :bow: to guide us in the right direction. I know I would and appreciate any accurate actionable data than can be offered, I have seen to many good threads gone bad.

I you have any links or articles that can enlighten us that would be greatly appreciated. :wink:

i was thinkin about it for a second but my friend said he bought it for RSX-S and he felt no improvement.... plus its a pain in the ___ to install because theres no room to clearly install it...

so my aim is for the s-pipe!

you might also check out perrinperformance they are working on alot of things for the tc http://www.perrinperformance.com

how hard are these to put on?

Basic instructions for a crank pulley...

1. Jack up side of car and place on jack stands.

2. Remove wheel and plastic wheel well shroud.

3. Loosen crank bolt and remove. You will need air tools to remove bolt.

4. Loosen tensioner and remove belt.

5. Use puller to remove stock crank pulley.
(rent for free from Autozone)

6. Install new crank pulley applying grease to bore .
This will aid in the install.

7. Tighten crank bolt to 110 ft. lbs.
(check your manual for exact specs)

8. Install new belt.

9. Tighten tensioner.

10. Replace wheel shroud and wheel.

11. Lower car and start to check for proper installation.

It is a pretty simple process, mine took about 40 minutes. Also, any mechanic shop should be able to install a crank pulley for less than 50dollars if it is not something you wish to tackle yourself. If they try to charge you more, leave!

would this effect the supercharger at all?

man this thread make me feel dumb, but yet very interesting and kinda learn something :clap:

Does anyone have the NST pulley kit installed on their tC? I want to know more about it. Should I wait for another company? If I buy this pulley do I need a new belt? If so what kind?


It's hot down here in Houston and I need my AC so will the pulley affect this?

would this effect the supercharger at all?

if its an underdrive pully then yes it will affect the blower

It's hot down here in Houston and I need my AC so will the pulley affect this?

Thats kind of like saying that the AC system gets colder the faster you are driving, which isnt true. It wont have any affects on the AC system.

reduces the power going to it

If you guys are worried about that then, just get the Unorthodox pulley. It's the same size as the stocker just lighter like the Perrin Pulley for the Xa and Xb.

Basic instructions for a crank pulley...

1. Jack up side of car and place on jack stands.

2. Remove wheel and plastic wheel well shroud.

3. Loosen crank bolt and remove. You will need air tools to remove bolt.

4. Loosen tensioner and remove belt.

5. Use puller to remove stock crank pulley.
(rent for free from Autozone)

6. Install new crank pulley applying grease to bore .
This will aid in the install.

7. Tighten crank bolt to 110 ft. lbs.
(check your manual for exact specs)

8. Install new belt.

9. Tighten tensioner.

10. Replace wheel shroud and wheel.

11. Lower car and start to check for proper installation.

It is a pretty simple process, mine took about 40 minutes. Also, any mechanic shop should be able to install a crank pulley for less than 50dollars if it is not something you wish to tackle yourself. If they try to charge you more, leave!

I may do a DIY on this here soon... It will be in the tech section with the others...

I have had several NST pulleys on my own cars, the A/C will not suffer as a result. There are two things gained as a result of aftermarket pulleys....

1. Weight reduction - NST pulleys are built out of aircraft aluminum. This means that the pulley will weigh much less than the OEM piece built out of steel. Less weight means better throttle responce, it does not mean more HP.

2. Underdrive - This is when you change the size of the pulley. Changing the size of the crank pulley results in less power going to accessories and more power going to the wheels to drive the car. This is how more HP is sent to the wheels.

Getting a stock sized lightweight crank pulley will make the car feel faster, it will definitely be more responsive and FEEL faster, but it will not necessarily make more WHP on a dyno. A pulley that is lightweight AND underdrive will add both throttle responce and will yield WHP.

Finally, taking a look around the NST website shows that they have stuff in development for the TRD supercharger as well!

i got one on my car. i felt the difference right after the install. better throttle response.

so whats the final verdict? yes or no to NST pulleys
even if it does remove the balancer thing is that really that bad? because seriously this is a modern engine and is suposed to have modern internaly balanced parts

i just really wanna know because they were looking to be soo good and only $99 but were then instantly shot down

so whats the final verdict? yes or no to NST pulleys?


It seems to me that of the people who posted on this topic so far, several people speaking on the topic have had first hand experience with these pulleys on their current or previous cars. Those of us who have these pulleys seem to like them and have not had any failures as a result. I also looked around in the xA xB forums and found that many people seem to like the perrin pulley available for their motors.

There also seem to be a few who do not like the idea of these pulleys, have not had any on their cars, and will never use any. So that is their stand on the topic.


Does anyone else have NST or any other similar pulleys who can give us any insight on the subjet?

if anyone at all has these on your tC now would be the best time to speak up

i just mentioned, i have an NST pulley on my car.
and i put at about 5,000 miles on my car since i 1st got it. it did make a difference in how the engine runs. i got better throttle response. the engine doesn't idle louder. and as far as your a/c and stuff running slower...ya it does, but it'll slow it down to where you cant even tell the difference. everything in my car is fine.

oh sweeet its just thet when u said in MY car i wasnt sure if u were talkin about the tC ir sumthin else or wut, its the tC right? and kan u actualy feel that power gain?

ya, i felt the difference right away.

i got one on my car. i felt the difference right after the install. better throttle response.

do you have just ONE pully or the whole kit?

It looks like there is only one pulley out for the tC right now. Underdrive Crank pulley. Check it out for yourself....
NST, www.NonStopTuning.com

daam then thats one expensive pully

daam then thats one expensive pully
That's cheap for an underdrive pulley. Look around and you'll see what I talking about. Unorthodox wants $150+ for their pulley and it's not even underdriven, but it is lightened kinda like the Perrin pulley.

daam then thats one expensive pully
That's cheap for an underdrive pulley. Look around and you'll see what I talking about. Unorthodox wants $150+ for their pulley and it's not even underdriven, but it is lightened kinda like the Perrin pulley.
as underdrive pulley yeah thats cheap but as small circular metal disks go its expensive

daam then thats one expensive pully

Dude, are you really serious? Yes, it is a piece of aluminum, but we all need to consider the fact that reputable companies spend tons of money in R&D, then spend money on advertizing, then spend money on mass production, then have to wait an X amount of time to sell these products and maybe then when it is all said and done they may have made a few bucks. Yes you can say "well they wouldnt do it if they didnt make money off it" but we still have to consider all the hard work they put into delivering us a great product.

http://www.unorthodoxracing.com/Merchant2/0212101.jpg
Unorthodox, Stock size, not much horsepower, better throttle responce, $151 MSRP

http://www.nonstoptuning.com/images/NSTunderdriveB.JPG
NST, Underdrive, positive horsepower, better throttle responce, $99 MSRP

blah blah blah

dude, sensay...lighten up. you see the price comparison right there.

Well he DID spell his own name wrong...

(please tell me that was on purpose)

well you spelled woozy wrong :rofl:

That was on purpose though. wOoZy just doesn't look good. It has to be symetrical, so I added an O and a Z to make it wOoOzZy. That just looks better. :silly:

u talkin about sensai? bro i take japanese beleive me i know how to spell it i just like sensay better always have

wakatte. As long as it was on purpose then nevermind. Though I like sensei better. :P

when i came up with the name a long time a go i had a reason for spelling it like that but now i just dont remember

senSAY sAYS blah blah blah

This pulley is worth it and I would recomend it. I have noticed no problems with my A/C and it has been over 100 in CO for all of July so i know. All i can say is if you dont belive it works DONT BUY IT!

can anyone that has this pully installed on their tC offer anymore input about the changes it made performance wize?

can anyone that has this pully installed on their tC offer anymore input about the changes it made performance wize?
I'll let everyone know after i install it tomorrow. I just got home and my pulley is here. Now I'm off to Pep Boys to get a belt for it and I will put it on tomorrow.

sweet

Sweet just hurry up or else!

yeah... or else we'll take a dump in your zen garden

I have this pulley on my 05 TC and it makes a response difference. By that it feels as if the rpms climb faster and chirping gears is almost all the time. ITS WORTH IT

I have this pulley on my 05 TC and it makes a response difference. By that it feels as if the rpms climb faster and chirping gears is almost all the time. ITS WORTH IT
sweet wut else can u say, and how about the instal were the instructions clear?
how does it compare to say... an intake

I belive this is a helper part. By that i am saying it helps all your other parts perform just that much better. I would say about a 2-4hp maybe. Instal was a sinch but i have a lift and a snap on truck in my house.

what did u have to do?

Ok everybody the pulley is on. It took about 30 minutes to install.The only thing I don"t like about the pulley is, instead of them making the pulley a 7 rib pulley they made it a 6 rib pulley. I guess they couldn't find a 7 rib belt that would have worked. First impression of the pulley was it is lightas hell compared to the stock pulley. I took the car for a spin and y7ou can tell it's there but it really didn't add too much to the overall way the car reved or accelerated. Like I said before you can feel that it's there but it's no 35 shot of nitrous :no: . All in all it's an ok mod, but I would do a intake or exhaust before I got one of these things if you already didn't have one. My Fidanza flywheel and clutch kit is next on my agenda. I will probably install these next week along with some Redline gear oil. I'll keep everyone posted.

would you say the performance gains are worth the 99$ plus the 10$ for the belt?

would you say the performance gains are worth the 99$ plus the 10$ for the belt?
Any gain is a good gain. I just say go for the other performance parts before this one. It's just ok to me. Nothing special. I liked the Perrin puley for my xb better than this one as far as performance gains go. The sad part is the Perrin pulley wasn't even underdriven :yawn: . $100 bucks is chump change and not really a big deal to me anyway.

I personally think this is a better bang for the buck than any intake or exhaust component. The thing is that with an intake or exhaust you are fooled a little bit by the "ear" dyno, hehe. The tone of the car changes so much and you think the car sounds more powerful than it actually may be.

Intake, 200+ dollars, maybe 3 or 4 HP?
Exhaust, 400+ dollars, maybe 3 or 4 HP?
Pulley, 100 dollars, maybe 3 or 4 HP?

I guess if someone were to put a stock tC on a dyno with one of these pulleys the results would be more believealbe? Who knows. I think it is a good mod anyway :)

I personally think this is a better bang for the buck than any intake or exhaust component. The thing is that with an intake or exhaust you are fooled a little bit by the "ear" dyno, hehe. The tone of the car changes so much and you think the car sounds more powerful than it actually may be.

Intake, 200+ dollars, maybe 3 or 4 HP?
Exhaust, 400+ dollars, maybe 3 or 4 HP?
Pulley, 100 dollars, maybe 3 or 4 HP?

I guess if someone were to put a stock tC on a dyno with one of these pulleys the results would be more believealbe? Who knows. I think it is a good mod anyway :)
Not me sorry bro.

i was thinkin of putin the pully and the s-pipe on at the same time so i would feel a lil more pull and would hear a lil diffrence in sound

i was thinkin of putin the pully and the s-pipe on at the same time so i would feel a lil more pull and would hear a lil diffrence in sound
You're not gonna feel much from the pulley.

so are you saying its not worth it...

so are you saying its not worth it...
If you got $100 to burn get it. If not don't bother.

ok... but you DO feel somthing right...

ok... but you DO feel somthing right...
a very little almost unnoticeable boost. But you know it's there i guess :? .

ok... but you DO feel somthing right...
a very little almost unnoticeable boost. But you know it's there i guess :? .

ehhhhhh.... doesnt sound too good

munch your experince with the pully seems to be not nearly as good as the other people

munch your experince with the pully seems to be not nearly as good as the other people
I guess people spent there money and wanted to feel something.

Here is a picture of my pulley installed and the stock one.
http://memimage.cardomain.net/member_images/3/web/2055000-2055999/2055283_17_full.jpg

A few pics I found posted on the NST website. There is a installation guide and some comparison pics on NST, visit the link and click on installation guide....
http://www.nonstoptuning.com/pKitToySciTC.htm

http://www.nonstoptuning.com/images/NSTScionTC/NST02020comparison.JPG

http://www.nonstoptuning.com/images/NSTScionTC/NST02020Installed.JPG

For those of you who ordered a NST pulley other than the crank pulley, how long was your wait for delivery? The pulleys that say "Special Order Only" is what I am refering to because I just ordered the Lightweight Water Pump Pulley and im curious as to when i should expect it to arrive. :pray:

Only took me a couple days to get the whole set....

For those of you who ordered a NST pulley other than the crank pulley, how long was your wait for delivery? The pulleys that say "Special Order Only" is what I am refering to because I just ordered the Lightweight Water Pump Pulley and im curious as to when i should expect it to arrive. :pray:

If you get lucky and they have a few sitting around then 1 week tops. If not 4-6 weeks.

I just ordered mine & spoke with their reps. They were actually manufacturing some when I was inquiring them. They told me if I get my ordering in quick, it should be about 2 weeks or so for them to arrive.........

Patience is a lesson learned in the tuning world... I'm waiting for so many things to come out, be figured out.... 2 weeks is nothing....

Ehh.. I still haven't installed mine yet.. dont ask why.. cause I dont even know. :lol:

Well I got my NST LT Water Pump Pulley yesterday :P Ordered on 2/6 Got it 2/15 so that wasnt bad at all for being "Special Order". Anyways heres a pic of my soon-to-be setup, NST LT WP Pulley & ZPI V.2.0 Crank pulley. :eyebrow:

http://memimage.cardomain.net/member_images/2/web/122000-122999/122100_157_full.jpg

http://memimage.cardomain.net/member_images/2/web/122000-122999/122100_160_full.jpg

:silly:

^^would be nice to see the NST crank pulley next to that WP pulley. lol

it would me nice, and to the guy who said it wasnt worth it...i think 90% if the owners who have would be....i plan of my the 91th %

it would me nice, and to the guy who said it wasnt worth it...i think 90% if the owners who have would be....i plan of my the 91th %



Wow... I almost understood that... Guess I need to sniff some paint, then mabey I would know what you just said!

^^ haha, ya i didnt understand that either.

drinking and typing is not a good combo

drinking and typing is not a good combo

ha, i did that one time. didnt turn out too well. :P

crank pulleys rule my dad has some on his xa

^ LoL

And yes.... they do rule. :P

Your dad has NST pulleys on his xA?! That is one cool dad :)

I Finally got my NST water pump pulley installed w/ a ZPI V.2 crank pulley and wanted to share some install pictures and weight reduction details. The stock water pump pulley weighed in at 13.40 Oz. or .84 LBS. The NST WP PULLEY weighs in at only 5.85 Oz. or .37 LBS. This totals to a weight reduction of 7.55 Oz. or .47 LBS. Below are two NST install pix. The ZPI pulley details and pix are posted in the ZPI pulley thread. :lalala:

http://memimage.cardomain.net/member_images/2/web/122000-122999/122100_188_full.jpg

http://memimage.cardomain.net/member_images/2/web/122000-122999/122100_189_full.jpg

becides the crank pulley - is there any update on the other pulleys nst has?

I Finally got my NST water pump pulley installed w/ a ZPI V.2 crank pulley and wanted to share some install pictures and weight reduction details. The stock water pump pulley weighed in at 13.40 Oz. or .84 LBS. The NST WP PULLEY weighs in at only 5.85 Oz. or .37 LBS. This totals to a weight reduction of 7.55 Oz. or .47 LBS. Below are two NST install pix. The ZPI pulley details and pix are posted in the ZPI pulley thread. :lalala:

http://memimage.cardomain.net/member_images/2/web/122000-122999/122100_188_full.jpg

http://memimage.cardomain.net/member_images/2/web/122000-122999/122100_189_full.jpg

That water pulley seems to be slippery, like if the belt would just go out of rails because of that. Any info?

Not at all, the Anodized coating on both pulleys along with the high tension of the belt eliminates any slippage possibilities. They spin together like they’re glued! :clap:

niceeeee 8) No, really. Good to know. :P