Just today, when I shut off my car I noticed the turbo spinning down, I've never noticed this before. At first I thought it was my a/c/heat fan still spinning.

www.handsonkitchen.com/turbo.mp3

It seems a bit loud/grainy doesn't it? or am I just hearing things.

Sorry for the low volume, sound clip taken from my digital camera.

turbo has around 200 miles on it. (gt35r)

 

Sounds fine had the same turbo and they seem to do that. make sure you let the car idle for 30 sec to a minute before you shut it down,

 

i think its fine....
liek they told you, remember to always let the car idle a bit before shutting it down.

 

Yes, you'll cook the bearings if you don't let it idle for about a minute. Turbo timer is your friend

 

Not my first turbo car, even if I were to run it hard right before shutdown, I doubt in 200 miles if not less, it would show signs of cooking. Also with both oil and water cooling, it shouldn't be anywhere near as much of an issue VS the old school non ball bearing oil cooled turbos like I had on my Civic. Either way, I always take it easy right before putting it up and still let it sit for a bit before getting out.

Main thing that throws a flag is that I've never noticed it before, and after today (good bit of driving as with A LOT of standing still due to traffic) I noticed it. It's not the fact that I can hear it spinning, its that it has a slight grainy sound to it, it reminds me of my old roller skate wheels when I spin one.

Next time I have the front bumper off I'll remove the air filter pipe and check for any extra play in the turbo.

 

Didn't realize you had a water cooled turbo, cool
If I had read a little deeper I would've noticed the GT35r in your post.

 

you guys are talking about "COKING", not "cooking." .....and coking happens to the oil, not the bearing. When the oil cokes, it will impede oil flow to the bearing surface.

 

Which will in turn do what? COOK the bearings

 

my setup is watercooled, but i still run the turbo timer. I've have a turbo leak before and it made the car louder than it should.

 

i think its just a bad *** free spinning turbo. smile at your own badness!

 

what did your turbo leak sound like?

 

Brahhhrrr... lol..