NST (NonStopTuning) 370Z VQ37HR Pulley Kit Review w/ Dyno Charts

Sh0velMan · 02-07-2013, 02:07 PM

lolserskates

XwChriswX · 02-07-2013, 02:09 PM

Quote:

Originally Posted by DEpointfive0

... You need to sleep more... If the crank is UD, all your accessories are UD

Dude, read the OP:

Quote:

The NST Kit includes a 10% Underdrive Crank Pulley along with a 10% Overdrive (faster) Alternator Pulley. This means that the alternator will run at OEM speeds when the NST kit is used. Extra power, torque, and response... no need to worry about a weak battery, dimming lights, or poor a/c performance at idle.

-10% + 10% = 0% difference...

Everything else runs at normal speeds. I'm used to being sleep deprived.

DEpointfive0 · 02-07-2013, 02:10 PM

Quote:

Originally Posted by XwChriswX

Dude, read the OP:

-10% + 10% = 0% difference...

Everything else runs at normal speeds. I'm used to being sleep deprived.

And sh0velman asked about Power steering

You need more sleep, LOL

SS_Firehawk · 02-07-2013, 02:12 PM

I saw no difference. Voltages are same as stock as well.

Sh0velMan · 02-07-2013, 02:13 PM

Chris,

If the crank pulley is underdriven, everything on the belt is underdriven. They offer an alternator pulley to offset that difference for the alternator, but not for the PS pump. Hence my question.

XwChriswX · 02-07-2013, 02:25 PM

Quote:

Originally Posted by DEpointfive0

And sh0velman asked about Power steering

You need more sleep, LOL

Hmm, coulda swore "Everything else on the belt..." Included the PS pump..

Quote:

Originally Posted by SS_Firehawk

I saw no difference. Voltages are same as stock as well.

Quote:

Originally Posted by Sh0velMan

Chris,

If the crank pulley is underdriven, everything on the belt is underdriven. They offer an alternator pulley to offset that difference for the alternator, but not for the PS pump. Hence my question.

I understand that point, but if you underdrive one pulley, and overdrive another pulley, it is my understanding all Other pulleys operate as if there were no difference. It's a system because they're all connected to the same belt.

If you only installed the Underdriven crank pulley, and not the overdriven alternator pulley, yes the entire system would be underdriven. This is the point behind overdriving the alternator pulley.

DEpointfive0 · 02-07-2013, 02:33 PM

Quote:

Originally Posted by XwChriswX

Hmm, coulda swore "Everything else on the belt..." Included the PS pump..

I understand that point, but if you underdrive one pulley, and overdrive another pulley, it is my understanding all Other pulleys operate as if there were no difference. It's a system because they're all connected to the same belt.

If you only installed the Underdriven crank pulley, and not the overdriven alternator pulley, yes the entire system would be underdriven. This is the point behind overdriving the alternator pulley.

It doesn't work that way. If the net change is nothing there would be no reason to go under driven
They overdrive the alternator so that your voltages don't drop

XwChriswX · 02-07-2013, 02:38 PM

Quote:

Originally Posted by DEpointfive0

It doesn't work that way. If the net change is nothing there would be no reason to go under driven
They overdrive the alternator so that your voltages don't drop

Hmm, then my understanding of the belts/pulleys is all fuq'd up.

Sh0velMan · 02-07-2013, 02:39 PM

Under-driving the crank pulley (the one doing the work) decreases the belt speed. Each individual accessory would need its own undersized (over driven) pulley to compensate for that fact.

XwChriswX · 02-07-2013, 02:40 PM

Quote:

Originally Posted by Sh0velMan

Under-driving the crank pulley (the one doing the work) decreases the belt speed. Each individual accessory would need its own undersized (over driven) pulley to compensate for that fact.

In that case, I've had my pulleys on for going on almost 35k mi now, and have had no problems with PS or voltage or coolant flow/temps.

antfd3s · 02-17-2013, 10:43 AM

I received my kit last week. My main concern would be looking forward to the rev increase. As i know this motor climbs under my expectations a whole lot. Any little increase would make me feel somewhat relieved. Least faster then the slow setting on my wipers blades. Lol
Works getting done @ RT this weds. I'll let u guys know how I make out.

CTD-Germany · 03-04-2013, 01:16 PM

@antfd3s .. when you have ordered your set? did you order directly from NST? i ask, because we have ordered a couple of sets in end of november and still no delivery. on the phone is everytime the answering machine... no response on emails. does this company still exist?

tino

G35Robby · 03-05-2013, 05:03 PM

Been trying to contact NST as well with no response. I find this very unprofessional. How can I contact NST.
I see them active on facebook. I don't get it

SS_Firehawk · 03-05-2013, 05:47 PM

It took me 2 months to get mine. They sell them faster than they make them.

Chuck33079 · 03-05-2013, 07:14 PM

Quote:

Originally Posted by SS_Firehawk

They sell them faster than they make them.

That doesn't surprise me. I picked my clutch and flywheel from NST. It's not a huge operation. I can't imagine more than a few people work there.

02-07-2013, 02:07 PM	#526 (permalink)
Sh0velMan A True Z Fanatic Join Date: Jan 2012 Location: Dallas/Ft.Worth Posts: 3,349 Drives: Noisily. Rep Power: 20	lolserskates __________________ Buy My Car! \| Build Thread

02-07-2013, 02:12 PM	#529 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	I saw no difference. Voltages are same as stock as well. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

02-07-2013, 02:13 PM	#530 (permalink)
Sh0velMan A True Z Fanatic Join Date: Jan 2012 Location: Dallas/Ft.Worth Posts: 3,349 Drives: Noisily. Rep Power: 20	Chris, If the crank pulley is underdriven, everything on the belt is underdriven. They offer an alternator pulley to offset that difference for the alternator, but not for the PS pump. Hence my question. DEpointfive0 likes this. __________________ Buy My Car! \| Build Thread

02-07-2013, 02:39 PM	#534 (permalink)
Sh0velMan A True Z Fanatic Join Date: Jan 2012 Location: Dallas/Ft.Worth Posts: 3,349 Drives: Noisily. Rep Power: 20	Under-driving the crank pulley (the one doing the work) decreases the belt speed. Each individual accessory would need its own undersized (over driven) pulley to compensate for that fact. __________________ Buy My Car! \| Build Thread

03-04-2013, 01:16 PM	#537 (permalink)
CTD-Germany Base Member Join Date: Jun 2009 Location: Rheinberg, Germany Posts: 5 Drives: 05 Nissan 350Z SL M6 Rep Power: 16	@antfd3s .. when you have ordered your set? did you order directly from NST? i ask, because we have ordered a couple of sets in end of november and still no delivery. on the phone is everytime the answering machine... no response on emails. does this company still exist? tino Last edited by CTD-Germany; 03-04-2013 at 01:34 PM.

02-17-2013, 10:43 AM	#536 (permalink)
antfd3s Base Member Join Date: Dec 2010 Location: Cherry Hill NJ Age: 53 Posts: 219 Drives: 11 STI Rep Power: 14	I received my kit last week. My main concern would be looking forward to the rev increase. As i know this motor climbs under my expectations a whole lot. Any little increase would make me feel somewhat relieved. Least faster then the slow setting on my wipers blades. Lol Works getting done @ RT this weds. I'll let u guys know how I make out.

03-05-2013, 05:03 PM	#538 (permalink)
G35Robby Base Member Join Date: Feb 2010 Location: SoCal ~818~ Posts: 5 Drives: 2008 G35 Sedan Rep Power: 15	Been trying to contact NST as well with no response. I find this very unprofessional. How can I contact NST. I see them active on facebook. I don't get it __________________ 2008 V36 Sedan with some mods ~Team OutCast~ ~Street Works Automotive~

03-05-2013, 05:47 PM	#539 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	It took me 2 months to get mine. They sell them faster than they make them. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

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