the crank shaft its harmonic balance?

7419sundat

Compare it to an air filter. Yeah you can run your engine without one and get a little more power and better response but your engine won't last as long...

DEpointfive0

I think your point doesn't hold it's weight, but...
Whatever you say brother, no one is forcing you to install one.

I have yet to see anyone scientifically and empirically show that with an aftermarket pulley your engine won't last as long.

SouthArk370Z

I've done a little research on this site and a few others in the last few minutes and have come to the conclusion, that, on most modern 4- and 6-cylinder engines, the harmonic damper is just not as important as it was on older engines (especially older V8s).
I would put using a non-damped crank pulley in the same class as using the 7AT for minor deceleration - it's not the best thing to do as far as longevity goes, but it's not all that bad, either. For a lot of ppl the small loss in longevity is more than made up for by the gain in fun.
For a DD that seldom gets near the redline, I'd be comfortable running without a damper. For an engine that will see a lot of high RPM use, I'd want some kind of damper on there.
YMMV.

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lemon-fresh

It is such a polarizing issue, I have a set of NST pulleys and I'm still trying to decide whether I should install them. I did see pics of one forum member who had his NST pulley shatter (wish I could remember who), it's what made me not rush into installing mine.

Probably just gonna talk to the mechanic about it.

XwChriswX

As mentioned before, the stigma of pulleys comes from improper installs, not defective parts. Just like with spacers or extended studs or anything else...

I've had my pulleys on for almost 40k, no problems, hell not even any excess oil burn.

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vitinvictor1

Anyone here with the stillen pulley installed?

tiller

ya i got a stillen crank pulley,its been on for 2 summers,so far no problems,still only making a little over 300whp but am interested to see when i go forced induction if any changes occur cuz of it,at stock power pulley works great

DEpointfive0

I know the member personally who had the shattered crank, hell, I uploaded the pics, LOL
It was shitty install/crankshaft was bad

After the OEM pulley was put back on, it wobbled and even the cast iron one shattered

Oh, if you don't install them, I'll lowball you for your kit, lol

I do, it's great