the crank shaft its harmonic balance?
 

Im thinking in get the pulley for the Z...but I want to know if Its the crank shaft harmonic balance????

Please use the search feature


50% think it's internally balanced, 50% think that if you replace the OEM crank pulley you'll fúck something up...


Personally, I know Mike at NST personally, lol


And I run the 20% under drive pulley without an alternator pulley with no issues, I think it's an amazing mod

It's strange that we can't get a straight answer on this. Wouldn't one of the shops on the forum know definitively exactly how it's balanced? Particularly the one that sells the pulleys?

The guys selling pulleys sell THOUSDANDS and ALL say the engines are internally balanced... IIRC Mike@NST says that the Harmonics thing is BS, that it would make a difference if our cars were F1 cars spinning at 18k RPM, not 8K
And Mike is a smart guy


It's like wheel spacers, fúck ups come from bad installs... My pulley has been on for... 8k miles, just checked it whole it was on the lift, no issues I can see!

dont know why u would risk damaging your engine by throwing off its harmonics to pick up 3 hp...

Its a harmonic DAMPER, it does not balance the engine. Yes it is damaging to remove it. That's why almost every single car has one.

Is there a harmonic damper on the engine?

I searched the FSM for "harmonic", "balance", and "damp" with no harmonic damper found. Scanning through the pics in the engine sections, all I could find is a crank pulley.

Looking at my engine, the crank pulley doesn't look like it's attached to a damper, but it's difficult to see without pulling the fans (and maybe the radiator) plus I wouldn't be surprised if a modern damper doesn't look like what I'm used to seeing.

I wonder what nissan would haw to say about this. Maybe they'll have the real answer?

The crank pulley is a harmonic damper it has a vibration absorbing material ring in it.

Thanks.

I had an NST Pulley set installed @ 8k, I'm almost to 43k right now, zero problems. :tup:

^^ THIS. I did a lot of research outside of this forum prior to installing mine and came up with the exact same info that Mike at NST posted on his pulley review thread. Go read that thread, it's extremely logical and informative. I've had my pulley on for ~7000-8000 miles with no problems. It's a cheap mod, it gives you more than 3hp, it helps smooth out your acceleration and makes your motor more responsive.


Sent from my iPizzle using magic and new-fangled science stuff

This is why I installed it, a minute HP gain is just a plus.

Thanks for your answers! Its becajse I have pucharsed the stillen pulley (80% more lightweight than OEM ) and I just want to be sure that its safe before install it.....or sell it

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...