Should I Install the UR Stock Size Light Weight CRANK Pulley?
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300ZXTT (03-24-2016)
#17
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First, it's a damper, not a dampener.
It's a pulley with a damper, the damper is for the belt, and peripheral components, not the engine.
USDM 90 degree V8s and older v6s have what is called a harmonic balancer due to the fact they are "Crossplane crankshafts", not "Flat plane crankshafts". And 90 degrees is inherently out of balance.
The VQ is a 60 degree engine with split crank pins to achieve balance of a 120 degree motor.
Thus does not use a "harmonic balancer", its just a crankshaft pulley.
It's a pulley with a damper, the damper is for the belt, and peripheral components, not the engine.
USDM 90 degree V8s and older v6s have what is called a harmonic balancer due to the fact they are "Crossplane crankshafts", not "Flat plane crankshafts". And 90 degrees is inherently out of balance.
The VQ is a 60 degree engine with split crank pins to achieve balance of a 120 degree motor.
Thus does not use a "harmonic balancer", its just a crankshaft pulley.
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300ZXTT (03-24-2016)
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Kris9884 (03-24-2016)
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Kris9884 (03-24-2016)
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dmg6768 (03-24-2016)
#22
i've run them on two previous cars for years without issue.
i'm not going to put one on the G out of pure laziness. other car i had it on only had 230hp - being an oddball car with few mods available, it needed all the help it could get!
i'm not going to put one on the G out of pure laziness. other car i had it on only had 230hp - being an oddball car with few mods available, it needed all the help it could get!
#23
To 'Kris9884'...will the lightweight pulley be safe. Likely yes. If you have engine failure, I doubt it would be from the light pulley. Twinturbo VG owners (including me) have been running lightweight pulleys for many years on cars with significantly more HP than a stock G37. Hard driving for tens of thousands of miles with no I'll effects. Do it, if you choose. That being said, you're likely not going to get much bang for your buck performance-wise with just pulleys. To fully appreciate, you should reduce weight throughout the entire driveline. Lighter pulley, lighter flywheel, lighter driveshaft would be optimal, albeit pricey. I removed nearly 40 pounds from my TTZ doing that. You're not adding HP, you're utilizing it better due to less driveline weight. Adding 4.08 gears would help a lot too. Honestly, if you were looking for better performance, I'd skip the pulley and save for 4.08 gears and install. IMO, it would be much more beneficial, especially on a 3,700+ pound car. My $.02. Best wishes with what you decide...
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Kris9884 (03-26-2016)
#25
For most people, forged wheels at between $4k - $8k a set has no bang for the buck. I agree, lighter wheels (and rotors) are a nice weight savings, but for a fraction of the cost, 4.08 gears would be better financially with a positive seat-of-the-pants difference.
#28
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iTrader: (3)
Sounds good. I'm not expecting to notice much of anything, I'm staying NA w/nitrous so I'm just going to lighten up a few things along the way. Besides these, the aluminum driveshaft and flywheel, that's about as far as I'm wiling to go. Super expensive wheels are a total waste of money just to get curbed/stolen or the .10 1/4 mile gain lol.. Thanks guys!
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