z noises are killing me ...
 

a few noises i cant get to the bottom of. first of all. there is a creaking squeaking sound. i dont know how tyo explain it. i thought it might have been the blown shocks that were on there, buty i upgraded to konis and the noise is still there. also, a low pitched whurrr sound kinda like that of a fan when im excelerating ....

We need more information than this to help you, dude. Is the cracking noise coming from the interior of the car, or do you hear it when the windows are down? Do you hear them all the time, or only when going over some bumps?
What suspension upgrades have you done? Do you have your original tension rods on?
Noises like those could be coming from anywhere. The "low pitched whurr" coming from the trunk is something typical of these cars and there's little you can do about it. Some of these low or even high pitch noises could be coming from the tires, and they only get worse with a stiffer suspension and poly bushings, for example.
Give us more information and we might be able to help you...
Good luck, Diego.

a buddy of mine had a talon with a bent turbo fan, and his whined really funny too. Eventually the whining got worse and the engine blew but it was his own dumb fault, but ya might wanna check that if the whining is coming from under the hood

Does the creaking/squeaking sound get worse on bumpy roads? Does it sound like it's in the front? If so, try lubricating your hood latch. Use a fairly think grease. WD-40, or similar doesn't last long.
As far as the whurring sounds. It could be a bad fan clutch. The info you provided is a bit vague. Does it sound like the cooling fan?

sounds like it could be the cooling fan, ive only noticed it since its been kinda hot here, but its pretty loud. i dont wanna take it to nissan dealer just so they can charge me 100 bucks to tell me its nothing tho.

Try this. When you spin the cooling fan by hand when the engine is cold, there's resistence that prevents the fan from spinning freely. When you try to spin the fan when the engine is hot, it should spin freely. If it doesn't spin freely, then you likely have a bad fan clutch. I had a similar problem on my Z31 years back. It's easy to change and not incredibly expensive. I think the Z31 fan clutch was $50 or so.

thanks. ill give that a try in a few minutes actually. should i order from dealer? aftermarket? ??

The fan clutch is a basic item. No need for the dealer (unless you want to pay double). Call around to auto parts stores to get the best prices (NAPA, Kragen, Pep Boys, etc.).

so, in the morning, before i drive, the fan should spin slightly and stop, right? after a moderate drive when the engine is hot, after i shut the car off, the fan shoul spin freely if i push it and not stop like it does before i drive?

That is correct.