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Anyone have issues with nst pullies

It's been a little time since these have been out, I haven't installed mine yet, I get different opinions here and there, has anyone had any issues with these or

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Old 10-11-2014, 04:59 PM   #1 (permalink)
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Default Anyone have issues with nst pullies

It's been a little time since these have been out, I haven't installed mine yet, I get different opinions here and there, has anyone had any issues with these or stillen pullies ?
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Old 10-11-2014, 05:09 PM   #2 (permalink)
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I'm interested in this as well, looking at the nst after I do some other work.
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Old 10-11-2014, 10:55 PM   #3 (permalink)
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Iv had mine for a year and a half and no issues
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Old 10-12-2014, 03:47 AM   #4 (permalink)
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Thanks for input.
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Old 10-12-2014, 09:51 AM   #5 (permalink)
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No issues here. Before installing mine, I was skeptical and did a lot of searching and found that the reasons against installing pulleys are based on theory. Aside from an issue with a cheap pulley welding itself to the block, (which won't happen with the NST or stillen) i couldnt find one person with a motor issue that was caused by an aftermarket crank pulley. I know several people who have had pulley kits on their Zs for years with track duty and no issues. Go for it
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Old 10-12-2014, 11:29 AM   #6 (permalink)
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i've had mine for about 1.5 years too. my Z is my daily but hasn't been on a track yet. it's been troublefree to the point where i forget it's there! zero wobbles.

most of the issues occur during installation.. the bolt is notoriously hard to crack and hard to tighten to spec. and some pulleys are a very snug fit
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Old 10-12-2014, 11:48 AM   #7 (permalink)
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IIRC, the crank bolt is a non-reusable torque-to-yield fastener. If my memory is correct, make sure you use a new bolt.
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Old 10-12-2014, 01:10 PM   #8 (permalink)
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Quote:
Originally Posted by SouthArk370Z View Post
IIRC, the crank bolt is a non-reusable torque-to-yield fastener. If my memory is correct, make sure you use a new bolt.
Good point, you need to purchase a new crank bolt since it's a torque to yield bolt. As long as it's installed properly, it's a great mod.
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Old 10-12-2014, 03:11 PM   #9 (permalink)
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there's a bit if debate re: reusing the crank bolt. i followed the service manual and bizzarely, it's not marked as a single use item. for mission critical stuff, i usually replace but in my planning before the job, i didnt buy one because the manual didnt say it must be replaced. Maybe it's marked as a single use item in the manual for other years? mine is a 2011
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Old 10-12-2014, 03:17 PM   #10 (permalink)
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If the tightening instructions have "and then 1/x turn more", it's a TTY fastener and only meant for one-time use.

Edit: IMNSHO, if you have any doubts, put in a new bolt. Why risk it for a cheap bolt?
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Old 10-12-2014, 08:50 PM   #11 (permalink)
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Quote:
Originally Posted by SouthArk370Z View Post
If the tightening instructions have "and then 1/x turn more", it's a TTY fastener and only meant for one-time use.

Edit: IMNSHO, if you have any doubts, put in a new bolt. Why risk it for a cheap bolt?
I have never ever seen an issue with reusing the crank bolt. I would reuse it in a heartbeat and never think a thing about it.
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Old 10-14-2014, 03:03 PM   #12 (permalink)
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Way back when I had my 97 240sx I ran a light weight underdrive pulley for 70k miles with no issue. They are very popular on smaller light weight lower powered cars.

My installation tip is if you have a manual have someone sit in the car with it in the highest gear and hold the brake while you loosen and tighten the crank bolt.
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Old 10-14-2014, 04:22 PM   #13 (permalink)
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3/4" drive impact makes it easy most of the 1/2" impact guns won't budge it.
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Old 10-14-2014, 10:32 PM   #14 (permalink)
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Originally Posted by 1slow370 View Post
3/4" drive impact makes it easy most of the 1/2" impact guns won't budge it.
That and some salad spoons to wiggle the pulley off the crank. Too bad you have to pull the whole radiator to use your impact.
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Old 10-15-2014, 11:58 AM   #15 (permalink)
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Well last time i did a pulley motor was out of the car

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