Don’t buy/install NST pulley

Morfiy · 10-21-2017, 07:36 AM

Yesterday I had a major issue with NST pulley. This situation totally pissed me off, I didn’t know what to do when it happened and I was scared when I saw it.
Now, chronologically I will describe what went wrong.
First, I noticed scratching/rubbing noise at the front of the engine, I didn’t paid attention on that, as I though that this could be the belt or one of the belt pulley. Then this noise turned to knocking sound and I found that it comes out from alternate pulley. Pulley and belt was successfully replaced, but knocking sound remained. When I suspected crank pulley, mechanic told me that, this is impossible, because it doesn’t have any bearing on. Then I decided to drive out my Z and take care of this sound later. I drove around 3 km (1,5 mile) from the service and suddenly herd a weird metal knock under the engine. I did parked my Z with stiffen steering wheel and called mechanic, hands were shacking! What was my surprise, when I saw a broken crank pulley laying on the bottom.
Likely, nothing gets herd, and I came back to the service with broken pulley and removed belt.
Now, I’m installing back my OEM crank pulley and hopefully the crankshaft will not be dissbalanced (going to check)

Those who already have this peace of sh..t installed - take it off immediately! Those who are going to install - don’t risk and better buy some better ones (like ATI)
Again, likely I was driving my Z in calm way and it happened in service vicinity!
Pictures attached

DeliriousClam · 10-21-2017, 09:06 AM

Jesus christ are there any pulleys that are safe for this car?

Morfiy · 10-21-2017, 09:09 AM

Quote:

Originally Posted by DeliriousClam

Jesus christ are there any pulleys that are safe for this car?

I saw a lot of race Z’s running ATI pulley
But from now I rather stay OEM

2011 Nismo#91 · 10-21-2017, 09:26 AM

NST pulleys have been **** for along time, sorry about your troubles. Personally I don't feel there are any good pulleys for our car and the couple HP isn't worth the trouble.

Trips · 10-21-2017, 11:17 AM

Thanks for posting

I've personally have had this happen a few months back.

It was a major pia to remove what was left of the pulley myself with limited tools.

NST lightweight pulleys

Morfiy · 10-21-2017, 11:36 AM

Quote:

Originally Posted by Trips

Thanks for posting

I've personally have had this happen a few months back.

It was a major pia to remove what was left of the pulley myself with limited tools.

I’m not the first one!
Same thing, the hardest job was to remove what was left

Rusty · 10-22-2017, 11:28 PM

The only aftermarket pulley I would run is the ATI.

Juso · 10-23-2017, 10:28 PM

So what do i do with this brand new nst set with the belt? Now I won't be able to sell it. Almost tempted to just put it on. Makes me sad now

Money down the drain for nothin.

Trips · 10-23-2017, 10:48 PM

Quote:

Originally Posted by Juso

So what do i do with this brand new nst set with the belt? Now I won't be able to sell it. Almost tempted to just put it on. Makes me sad now

Money down the drain for nothin.

Don't despair you'll eventually sell it.

There are always non believers.

Juso · 10-23-2017, 11:09 PM

Quote:

Originally Posted by Trips

Don't despair you'll eventually sell it.

There are always non believers.

I just saw a response to an old post of mine that says that nst updated the crank pulley and made the arms a little thicker, and after looking at a the picture in this thread, and a picture i saw of yours in another thread, my crank pulley arms do look a little thicker than the ones yall had. But maybe I'm crazy.

axmea? · 10-23-2017, 11:20 PM

Quote:

Originally Posted by Juso

I just saw a response to an old post of mine that says that nst updated the crank pulley and made the arms a little thicker, and after looking at a the picture in this thread, and a picture i saw of yours in another thread, my crank pulley arms do look a little thicker than the ones yall had. But maybe I'm crazy.

You'll be fine. Mine's fine. Recently changed belts and no issues seen.

Rusty · 10-23-2017, 11:36 PM

Quote:

Originally Posted by axmea?

You'll be fine. Mine's fine. Recently changed belts and no issues seen.

tick....tick...tick...tick...tick...tick.....tick. .....

axmea? · 10-24-2017, 12:49 AM

Yup. Probably, but why worry so much? You make a decision to go for the mod and expect it to run forever? I don't. What I do know is I've had mine for 4 years and happy it's gone this long. Look, we drive our cars for fun, we rake up the miles, we drive them "spiritedly", the car gets old. Somethings gonna break. If it does, fix it and replace. Move on.

Morfiy · 10-24-2017, 02:28 AM

Quote:

Originally Posted by Juso

So what do i do with this brand new nst set with the belt? Now I won't be able to sell it. Almost tempted to just put it on. Makes me sad now

Money down the drain for nothin.

I would not recommend you to install it! Hang it in your garage and never touch
Sorry made you feel sad, but maybe I saved your engine and your wallet

Felix 808 · 10-25-2017, 06:43 PM

Quote:

Originally Posted by 2011 Nismo#91

Personally I don't feel there are any good pulleys for our car and the couple HP isn't worth the trouble.

Yep

I would not change the pully on a street car. Race Car yes, but daily or even seldom driven street car not worth the pay off or the headache.

$.02 YMMV

10-21-2017, 07:36 AM	#1 (permalink)
Morfiy Base Member Join Date: Dec 2012 Location: Russia Posts: 209 Drives: 370Z "Authentic" Rep Power: 12	Don’t buy/install NST pulley Yesterday I had a major issue with NST pulley. This situation totally pissed me off, I didn’t know what to do when it happened and I was scared when I saw it. Now, chronologically I will describe what went wrong. First, I noticed scratching/rubbing noise at the front of the engine, I didn’t paid attention on that, as I though that this could be the belt or one of the belt pulley. Then this noise turned to knocking sound and I found that it comes out from alternate pulley. Pulley and belt was successfully replaced, but knocking sound remained. When I suspected crank pulley, mechanic told me that, this is impossible, because it doesn’t have any bearing on. Then I decided to drive out my Z and take care of this sound later. I drove around 3 km (1,5 mile) from the service and suddenly herd a weird metal knock under the engine. I did parked my Z with stiffen steering wheel and called mechanic, hands were shacking! What was my surprise, when I saw a broken crank pulley laying on the bottom. Likely, nothing gets herd, and I came back to the service with broken pulley and removed belt. Now, I’m installing back my OEM crank pulley and hopefully the crankshaft will not be dissbalanced (going to check) Those who already have this peace of sh..t installed - take it off immediately! Those who are going to install - don’t risk and better buy some better ones (like ATI) Again, likely I was driving my Z in calm way and it happened in service vicinity! Pictures attached

10-21-2017, 09:06 AM	#2 (permalink)
DeliriousClam A True Z Fanatic Join Date: May 2015 Location: NJ Age: 30 Posts: 3,758 Drives: 12 Base Sport Rep Power: 54271	Jesus christ are there any pulleys that are safe for this car? Morfiy likes this. __________________ Stillen, AAM, Shine Auto, Fujimora, Swift, EVO-R, Carbon Fiber Element, Nitrous Outlet MECP Advanced: CEA26671 Most of what I post here are artistic works of fiction and falsehood. Only a fool would take anything I post here as fact.

10-21-2017, 09:26 AM	#4 (permalink)
2011 Nismo#91 A True Z Fanatic Join Date: Mar 2011 Location: NJ Posts: 2,380 Drives: slowly Rep Power: 33858	NST pulleys have been **** for along time, sorry about your troubles. Personally I don't feel there are any good pulleys for our car and the couple HP isn't worth the trouble. Felix 808, Rusty and Morfiy like this. __________________ GTR TT 493Whp/431lbft, Ecutek, Southbend 6puck,Quaife, RPM RollBar 4Point, R888R, JRZ RSPro F(10R/10C) R(10R/6C) 1000f500r inlbs+150inlbs Tender, SPL everywhere.Full Specs Last edited by 2011 Nismo#91; 10-21-2017 at 09:31 AM.

10-21-2017, 11:17 AM	#5 (permalink)
Trips Administrator Join Date: May 2009 Location: Disneyland, Ca Posts: 8,728 Drives: 🔰 Rep Power: 10	Thanks for posting I've personally have had this happen a few months back. It was a major pia to remove what was left of the pulley myself with limited tools. NST lightweight pulleys Morfiy likes this. __________________

10-22-2017, 11:28 PM	#7 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 34,854 Drives: 2011 Nismo GM 6M Rep Power: 2684436	The only aftermarket pulley I would run is the ATI. zguynate, Hotrodz, Morfiy and 1 others like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

10-23-2017, 10:28 PM	#8 (permalink)
Juso Base Member Join Date: Apr 2017 Location: Texas Posts: 120 Drives: 12 Nissan 370z GM 7A Rep Power: 7	So what do i do with this brand new nst set with the belt? Now I won't be able to sell it. Almost tempted to just put it on. Makes me sad now Money down the drain for nothin.

10-24-2017, 12:49 AM	#13 (permalink)
axmea? A True Z Fanatic Join Date: Apr 2012 Location: SoCal Posts: 6,233 Drives: WELL ZED PW 6MT Rep Power: 53240	Yup. Probably, but why worry so much? You make a decision to go for the mod and expect it to run forever? I don't. What I do know is I've had mine for 4 years and happy it's gone this long. Look, we drive our cars for fun, we rake up the miles, we drive them "spiritedly", the car gets old. Somethings gonna break. If it does, fix it and replace. Move on. Rusty and NorthStyle like this. __________________ >MyZ's Album< NISMO Convert/ECUTEK/Takeda CAI/F.I. HFC NR CB Carbon/F.I. 34 Row Oil Cooler/4.08 Final Drive /Powertrix+Swifts/Hotchkis/SPL/Whiteline/TWM/Zoom Engineering/EVO-R/AeroJacket Vented CF Fenders + CF Spoiler/Avant Garde-WORK/NST/Morimoto Halo/STi Clear Lenses/Carbon Signal Automotive/RJM Performance/ZSpeed Clutch Flywheel CSC delete Last edited by axmea?; 10-24-2017 at 12:53 AM.

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