Pulley Install (NST, Underdrive Crank) - Scionlife.com

Go Back  Scionlife.com > Tech and DIY > xD Tech and DIY
Reload this Page >

Pulley Install (NST, Underdrive Crank)

Notices
xD Tech and DIY Info for the Scion xD

Pulley Install (NST, Underdrive Crank)

Old 03-10-2009, 10:05 PM
  #1  
Former Sponsor
SL Member
Thread Starter
iTrader: (1)

 
Join Date: Sep 2007
Location: USA
Posts: 2,098
Default Pulley Install (NST, Underdrive Crank)

Originally Posted by Garage1217
Hey guys, installed my pre-production pulley and install was a breeze! Everything was spot on. Made a couple hundred mile trip over turkey day and it seems my MPG definitely increased! With 2 adults, 3 kids and a load of educational books for the kids in the back of the car, I managed 34.5mpg! Not to shabby. More testing to come on my normal route to work and back.

Things that stood out immediately.
- Car revs much more freely
- 1st gear & a little in 2nd gear pull harder
- No issue with anything at all including ac

All in all a WIN for the product. Here is a quick how to guide... With the right tools you can install this bad boy in about 25 minutes.

Jack up the car & place jack stands under the car for safety



Next, take off the rim or hubcaps, whatever you have....



Remove the two 10mm bolts holding on the inner plastic fender cover and pull it aside



Loosen the tension on the belt. The XD has a mechanical tensioner system.


Wait for rain to stop.... DOH!!!!!


Next, remove the crank pulley bolt. It is a 19mm. I recommend an impact gun in this case which makes it a snap. I was lucky and my pulley just slid right off.



Have a gear puller set on hand in case the pulley does not just slide off... which it most likley will not "I was lucky"


Put new pulley in place. Chances are it will not just slide on as NST pulleys are TIGHT tolerance. Make sure the keyway is lined up with the key inside the pulley.


Tighten the crank bolt by hand with a socket wrench which will draw the pulley over the shaft and in place. The torque to spec... I did not have the proper torque spec with me so I used the German "goodntight" method.



Last, slap the belt back on & re-tension it. Take her for a test drive and SMILE!

Great product guys. I highly recommend it!
TWO THUMBS UP TO GARAGE1217!

NonStopTuning is offline  
Old 03-10-2009, 10:06 PM
  #2  
Former Sponsor
SL Member
Thread Starter
iTrader: (1)

 
Join Date: Sep 2007
Location: USA
Posts: 2,098
Default

Please share your thoughts and comments with us in this thread everyone.
The more user reviews, the better.





FAQ #1: I am interested in this pulley. Where can I order one?
ANSWER: http://www.nonstoptuning.com/pKitToySciXD.html

FAQ #2: Will I need to use a shorter belt for this pulley?
ANSWER: No, the OEM belt is compatible with this pulley.

I will add more FAQs as the are brought to my attention.

NonStopTuning is offline  
Old 03-10-2009, 10:25 PM
  #3  
Senior Member
10 Year Member
5 Year Member
SL Member
 
pickledchang's Avatar
 
Join Date: Apr 2008
Posts: 956
Default

pulley is on! started it up and took it around the block. fairly noticeable difference in 1st and 2nd gear, and the shifting seems a lot smoother between all gears, especially when downshifting because the engine matches its rpms better with less rotating mass. no difference in any accessories from what i can tell, but i havent thrown the AC on yet because its snowing a little now. i dont expect any difference though.

i also noticed that when i shift at lower rpms, i get more popping and whatnot from my exhaust. i like it.

all in all, its the same kind of benefit you get from the SSK, making your car that much more fun to drive (and you do get a little stronger pull in 1st and 2nd). a must have!







also, i thought i would try and write up some tips for those with questions about the install:

1. the splash guard is held on by 5 bolts/screws. save yourself the heartache of having it in your way and take it all the way off instead of just removing 2 or 3 screws bending it out of the way. its just as easy to put back on.

2. most important tip probably, you are going to need a STRONG impact wrench. im sure it varies some from car to car, but a 250ftlb wrench wasnt coming close to moving that thing. i used a 550ftlb wrench from home depot at 90psi (the max suggested) and it was able to break it free after a few seconds.

3. you will notice that the inside wall of the wheel well comes low enough to get in the way of your impact wrench getting a good bite on the bolt. be careful not to put it on there at an angle or you could strip the bolt. this didnt work for me, but you could try putting an extension on the wrench to give you room to work with. in my case, the joints between the gun, extension, and sockets absorbed too much of the 'impact' from the wrench to break it free. do what you can to use just the wrench with the socket on it.

4. moving the alt can be a pain. you will see the two bolts on top that youll want to loosen to let it slide fore and aft... but the process would be a lot easier if you could loosen the bolt below the alt. i didnt have any luck getting it loose, there is not much room down there to get a wrench on it also. nonetheless, you can still move the alt once you loosen the tension assembly bolts with a rubber mallet/block of wood method.

5. after youve got the pulley on, tightening that bolt to 140ftlb can be a pain because its hard to hold that pulley still. the best thing if you cant get a torque wrench to work is to dial your impact gun down some and put it on that way. i put my weak impact gun (250ftlb) on and turned the air pressure down a little. this bolt isnt responsible for turning the pulley (that is the key/keyways job) - it just keeps the pulley from sliding off the end of the crank.

6. belt tension - looks like the spec was posted on the previous page, but you need to move the alt about a half inch or so more forward than stock to make up for the slightly smaller pulley. you may even think to yourself that you are about to max the tension out, but you wont, so keep tapping with that mallet until the belt is taught.

i cant think of anything else at the moment, but those are the 'hiccups' that i ran into. it took me about 2 hours to get it on, but that includes putting the car back together halfway through and running to the store for a new impact wrench. i could probably do it again in 30min tops, so dont let this install scare you.
pickledchang is offline  
Old 03-11-2009, 12:49 AM
  #4  
Member
 
PUMPKIN1230's Avatar
 
Join Date: Sep 2008
Posts: 35
Default

.

I'm thinking of purchasing this product. Nice tips pickledchang. So, How tight should the belt be? Should it be real tight as in no slack whatsoever when pushing on the belt after install or should have some slack. If needs some slack, how much slack when pushing on the belt? Will it cause any damgages to any part if the wrong tension is installed.

Would like to know what is the correct tension so I can DIY this baby.
Thanks for all the info.

*EDIT* I saw the other thread for the belt deflection specs. Thanks anyways guys. I just need to press SEND to order. LOL.


.
PUMPKIN1230 is offline  
Old 03-11-2009, 12:55 AM
  #5  
Senior Member
10 Year Member
5 Year Member
SL Member
iTrader: (7)

 
ack154's Avatar
 
Join Date: Apr 2005
Posts: 16,700
Default

You guys got yourselves an xD Tech article.
ack154 is offline  
Old 03-11-2009, 01:06 AM
  #6  
Former Sponsor
SL Member
Thread Starter
iTrader: (1)

 
Join Date: Sep 2007
Location: USA
Posts: 2,098
Default

Originally Posted by PUMPKIN1230
.

I'm thinking of purchasing this product. Nice tips pickledchang. So, How tight should the belt be? Should it be real tight as in no slack whatsoever when pushing on the belt after install or should have some slack. If needs some slack, how much slack when pushing on the belt? Will it cause any damgages to any part if the wrong tension is installed.

Would like to know what is the correct tension so I can DIY this baby.
Thanks for all the info.

.
The tension should be the same as with the OEM setup. You should take a look at your belt, perhaps press down on it, and get a feel for how much tension there is. You would also want to pay attention to the way your belt sounds with your OEM setup, so that can you can compare after your NST install.

After installing your new pulley, you should apply tension and get a similar feel when applying pressure to the belt. There will be no negative effects if you apply the incorrect amount of pressure. You just may need to make an adjustment or two.

You would want to start the car after your installation is complete and listen to your car. If your belt sounds the same while spinning as it did before your pulley install, then you are good to go!

The worst thing that could happen would be that you may break a belt prematurely, in which case you would need to spend a whole $12 on a new belt!!!

You can read customer reviews, feedback, and comments from other NST pulley owners on the following forums... You will find nothing but happy customers...

www.ScionLife.com (tC, xA, xB, xB2 owners)
www.YarisWorld.com (similar setup as the xD)
www.8thCivic.com
www.club4ag.com
www.XR-Underground.com
www.86garage.com
www.MicroImageOnline.com

NonStopTuning is offline  
Old 03-11-2009, 02:35 AM
  #7  
Senior Member
SL Member
 
w_kary's Avatar
 
Join Date: Jan 2009
Posts: 200
Default

According to the xD technical manual the deflection is 7.5 to 8.0 mm for a new belt or 8.0 to 10.0 mm for a used belt. You check it at the mid point of the belt up and away from the air conditioner pulley. The crankshaft pulley nut is to be torqued to 140 ft lbs.
w_kary is offline  
Old 03-11-2009, 02:55 AM
  #8  
jct
Senior Member
10 Year Member
5 Year Member
SL Member

 
jct's Avatar
 
Join Date: Jul 2004
Posts: 13,945
Default

is that oil on the OE pulley?
jct is offline  
Old 03-11-2009, 03:35 AM
  #9  
Senior Member
10 Year Member
5 Year Member
SL Member
 
pickledchang's Avatar
 
Join Date: Apr 2008
Posts: 956
Default

Originally Posted by jct
is that oil on the OE pulley?
yes, it comes from the bearing seal behind the pulley. when you pull the bolt off, it leaks out a little bit.
pickledchang is offline  
Old 03-11-2009, 04:32 AM
  #10  
Member
 
Join Date: Jun 2008
Location: Aurora, CO
Posts: 31
Default

Well I got mine installed and am very pleased. Over all it was a fairly easy install. I would say that it was easier than installing a Fujita CAI but the main thing was having the right tools. A impact gun is a must, but other than that it was super easy. A special thanks to Non-Stop Tunning for seeing this project to the end and hopefully we will see a few more performance parts for the xD from NST.
coloskydiver is offline  
Old 03-11-2009, 05:16 AM
  #11  
Former Sponsor
SL Member
Thread Starter
iTrader: (1)

 
Join Date: Sep 2007
Location: USA
Posts: 2,098
Default

Originally Posted by coloskydiver
Well I got mine installed and am very pleased. Over all it was a fairly easy install. I would say that it was easier than installing a Fujita CAI but the main thing was having the right tools. A impact gun is a must, but other than that it was super easy. A special thanks to Non-Stop Tunning for seeing this project to the end and hopefully we will see a few more performance parts for the xD from NST.

Thank you for the kind words sir, we certainly do appreciate it!
Good luck and have fun with all your future projects!!!

NonStopTuning is offline  
Old 03-12-2009, 12:05 AM
  #12  
Senior Member
5 Year Member
SL Member
 
Yang's Avatar
 
Join Date: Apr 2008
Location: San Diego
Posts: 245
Default

i just got mine installed today and i was able to do it with a craftsman electric impact wrench rated at 250 lbs. and the pulley slid right off so it was pretty simple to do. review will come later.

Yang
Yang is offline  
Old 03-12-2009, 02:30 AM
  #13  
Senior Member
10 Year Member
5 Year Member
SL Member
 
pickledchang's Avatar
 
Join Date: Apr 2008
Posts: 956
Default

Originally Posted by Yang
i just got mine installed today and i was able to do it with a craftsman electric impact wrench rated at 250 lbs. and the pulley slid right off so it was pretty simple to do. review will come later.

Yang
really?? i guess it really varies from car to car then.
pickledchang is offline  
Old 03-12-2009, 02:36 AM
  #14  
Senior Member
SL Member
 
Join Date: Dec 2008
Location: Virginia
Posts: 211
Default

well two out of the three people who have confirmed their installations say that it was difficult to remove
c2iix is offline  
Old 03-12-2009, 03:28 AM
  #15  
Senior Member
10 Year Member
5 Year Member
SL Member
 
Zefoxe's Avatar
 
Join Date: Mar 2008
Posts: 1,052
Default

Originally Posted by pickledchang
Originally Posted by Yang
i just got mine installed today and i was able to do it with a craftsman electric impact wrench rated at 250 lbs. and the pulley slid right off so it was pretty simple to do. review will come later.

Yang
really?? i guess it really varies from car to car then.
could depend on age/miles driven too maybe?
Zefoxe is offline  
Old 03-12-2009, 04:31 AM
  #16  
Senior Member
10 Year Member
5 Year Member
SL Member
 
pickledchang's Avatar
 
Join Date: Apr 2008
Posts: 956
Default

maybe... ive had mine since march of 08, 14k miles.

have any of you noticed how much smoother downshifting is? the engine braking is a little weaker, not that its a bad thing or that bugs me. ill be real curious when the mpg reports start coming in.
pickledchang is offline  
Old 03-12-2009, 05:02 AM
  #17  
Senior Member
10 Year Member
5 Year Member
SL Member
 
Andyman's Avatar
 
Join Date: Nov 2007
Location: CNY
Posts: 125
Default

Has anyone needed a gear puller (as mentioned in the initial installation guide), or had any problems getting the pulley off AFTER the bolt is off? I'm thinking about giving this a try with my elec impact wrench (claims 250 ft-lbs). If it doesn't work, I'll have to wait until next weekend ( ) when I can get to a friend's garage and borrow a bigger air impact!
Either way, I'm very excited to get this on soon... :D

Andy
Andyman is offline  
Old 03-12-2009, 04:26 PM
  #18  
Senior Member
5 Year Member
SL Member
 
Yang's Avatar
 
Join Date: Apr 2008
Location: San Diego
Posts: 245
Default

i got mine in April of 08, but only have 6k miles on it. and shifting have been so much smoother now like you said pickle.

Yang
Yang is offline  
Old 03-12-2009, 07:38 PM
  #19  
Senior Member
10 Year Member
5 Year Member
SL Member
 
pickledchang's Avatar
 
Join Date: Apr 2008
Posts: 956
Default

andy, i did not need a puller at all. the pulley slides right off. the shaft it sits on is not tapered, so its not wedged on or anything. and you might be one of the lucky ones to be able to get it off with a 250lb electric. maybe the electrics apply the force differently from air and thats why i needed a higher rated air impact. i dunno.
pickledchang is offline  
Old 03-12-2009, 08:33 PM
  #20  
Senior Member
10 Year Member
5 Year Member
SL Member
 
Andyman's Avatar
 
Join Date: Nov 2007
Location: CNY
Posts: 125
Default

Thanks Pickle! Good to know. The main reason I was going to wait and use my buddy's garage is that he has a gear puller set... (and the bigger air impact!) But I might see if I can give it a go before then. I'll definitely report back!
Andyman is offline  

Thread Tools
Search this Thread
Quick Reply: Pulley Install (NST, Underdrive Crank)


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.