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

kannibul · 08-28-2009, 10:42 AM

Quote:

Originally Posted by semtex

I'm curious too. With the Stillen pulley, you need a new (shorter) belt. You don't need a new belt with NST. That makes me wonder if it's really underdriven. Looking at the original post, NST wrote "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." I guess that's why they still use the OEM belt. But if the alternator is running at OEM speeds, doesn't that kinda cancel out the effect of the underdrive crank pulley? I'm by no means an expert on this stuff, so I'm just asking the question.

Alternator doesn't "soak" much in the way of power from the engine.

The power steering pump, water pump, and A/C do.

The idler pulley might be more towards it's upper range of extension with a 10% underdrive and the OEM belt. Is Stillen's underdrive 10% also, or is it higher?

Also, the alternator pulley would be smaller to run at OEM speeds - which would increase the need for a shorter belt even more - like I said, I suspect the idler pulley for belt tension is just more at it's upper range of tolerance...

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
STILLEN Longtube G3 Intakes. Review, Dyno and Impressions.	RCZ	Intake/Exhaust	270	06-03-2015 02:25 PM
Stillen Underdrive Pulley - Review/Pics/Dyno/Vid	semtex	Engine & Drivetrain	73	11-24-2014 01:25 AM
Stillen Headers installed - Review/Pics/Vid/Dyno	semtex	Intake/Exhaust	120	06-25-2014 12:15 PM
Turbo-kits.com VQ37HR TT kit	nq23	Forced Induction	21	06-07-2009 12:25 PM
JWT Pop Chargers - Pictures - Review - Dyno	RCZ	Intake/Exhaust	31	03-30-2009 09:50 AM