Anyone have issues with nst pullies

Zrider79 · 10-11-2014, 04:59 PM

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 ?

Shawa · 10-11-2014, 05:09 PM

I'm interested in this as well, looking at the nst after I do some other work.
sub'd!

SlowZ · 10-11-2014, 10:55 PM

Iv had mine for a year and a half and no issues

Zrider79 · 10-12-2014, 03:47 AM

Thanks for input.

12nismo · 10-12-2014, 09:51 AM

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

juld0zer · 10-12-2014, 11:29 AM

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

SouthArk370Z · 10-12-2014, 11:48 AM

IIRC, the crank bolt is a non-reusable torque-to-yield fastener. If my memory is correct, make sure you use a new bolt.

12nismo · 10-12-2014, 01:10 PM

Quote:

Originally Posted by SouthArk370Z

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.

juld0zer · 10-12-2014, 03:11 PM

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

SouthArk370Z · 10-12-2014, 03:17 PM

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?

Spooler · 10-12-2014, 08:50 PM

Quote:

Originally Posted by SouthArk370Z

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.

240se · 10-14-2014, 03:03 PM

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.

1slow370 · 10-14-2014, 04:22 PM

3/4" drive impact makes it easy most of the 1/2" impact guns won't budge it.

Spooler · 10-14-2014, 10:32 PM

Quote:

Originally Posted by 1slow370

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.

1slow370 · 10-15-2014, 11:58 AM

Well last time i did a pulley motor was out of the car

Sent from my HTCONE using Tapatalk

10-11-2014, 04:59 PM	#1 (permalink)
Zrider79 Track Member Join Date: Jan 2011 Location: Pensacola florida Posts: 679 Drives: 2010 Rep Power: 17	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 ? __________________ 2010 Monterey blue roadster Z Touring. Blk interior. g3,fast intentions exhaust,more to come. RIP 05 Silverstone 350z roadster mild N/A build.

10-12-2014, 03:47 AM	#4 (permalink)
Zrider79 Track Member Join Date: Jan 2011 Location: Pensacola florida Posts: 679 Drives: 2010 Rep Power: 17	Thanks for input. __________________ 2010 Monterey blue roadster Z Touring. Blk interior. g3,fast intentions exhaust,more to come. RIP 05 Silverstone 350z roadster mild N/A build.

10-12-2014, 09:51 AM	#5 (permalink)
12nismo Base Member Join Date: Apr 2012 Location: Houston, TX Posts: 153 Drives: 2012 370z nismo Rep Power: 17	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 __________________ nismo Z34 12 0209 JTran Motorsports//Stillen//Fast Intentions//EcuTek//Z1 Motorsports//Eibach//BRIDE //Zspeed//Carbon Signal//Houston Halos//Southbend//Whiteline//TWM//NonStopTuning//Doran Racing

10-12-2014, 11:48 AM	#7 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324199	IIRC, the crank bolt is a non-reusable torque-to-yield fastener. If my memory is correct, make sure you use a new bolt. JARblue likes this. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

10-12-2014, 03:17 PM	#10 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324199	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? __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma Last edited by SouthArk370Z; 10-12-2014 at 03:20 PM.

10-11-2014, 05:09 PM	#2 (permalink)
Shawa Base Member Join Date: Apr 2012 Location: New Jersey Posts: 143 Drives: 2012 Fairlady Z MT Rep Power: 16	I'm interested in this as well, looking at the nst after I do some other work. sub'd!

10-11-2014, 10:55 PM	#3 (permalink)
SlowZ Premium Member Join Date: Jan 2014 Location: So cal Posts: 371 Drives: Z Rep Power: 13	Iv had mine for a year and a half and no issues

10-12-2014, 11:29 AM	#6 (permalink)
juld0zer Enthusiast Member Join Date: Nov 2012 Location: Sydney Posts: 428 Drives: 11 Nissan 370Z MB M6 Rep Power: 140	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

10-12-2014, 03:11 PM	#9 (permalink)
juld0zer Enthusiast Member Join Date: Nov 2012 Location: Sydney Posts: 428 Drives: 11 Nissan 370Z MB M6 Rep Power: 140	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

10-14-2014, 03:03 PM	#12 (permalink)
240se Enthusiast Member Join Date: Nov 2013 Location: VA Posts: 260 Drives: Gunmetal 12' Rep Power: 13	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.

10-14-2014, 04:22 PM	#13 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	3/4" drive impact makes it easy most of the 1/2" impact guns won't budge it. Spooler likes this. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

10-15-2014, 11:58 AM	#15 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	Well last time i did a pulley motor was out of the car Sent from my HTCONE using Tapatalk __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

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