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Manute Manute is offline
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Join Date: Aug 2003
Location: Madrid,Spain
Posts: 728
Turbo normal sound

Hello!

I've been a member of this community since 2003, it's been a while! However I lacked time to connect and I've been absent a few years.

My background is,I have an 86' 951 i bought in a less than perfect state...was not expensive but the poor car was beaten up, eating almost 1 liter oil per 160 miles or so. Imagine...
5 year ago I overhauled it, was a timely and very expensive overhaul, a few times the price of the car, itincluded new piatons with rings, new transaxle, new turbo (k26/6 since I wanted original specs) head work...etc etc. Quite expensive but I got an almost perfect mechanical state, no oil consumption at all and great performance. I also added a lindsey boost enhancer that really did it's job.

More recently I did some maintenace changing part of the steering, new shocks, new clutch pump, etc. This was the last maintenance, 2 months ago. Not cheap also....

So with this background, here is my question related to the topic...

Yesterday was driving through a tunnel, when I noticed the sound ofthe turbo spooling up and down while accelerating. And I thought "how cool the turbo spooling"... But after exiting the tunnel I turned off the stereo and while accelerating, I still heard the turbo spooling up and down...very subtle, a very light " pssttttt.....psssssst". Then i tought "did I heard this before?? Is this normal?" I kept driving and I still heard the very subtle sound of the turbo spooling up and down. When above 3k rpm, I heard nothing, and at the end of the trip when the car was hot, the sound was even more sobtle, almost non noticeable.

So now I dont know if i'm too paranoid about this...I remember when the car was not repaired and i had the original busted turbo that it was quite noisy, but i cant remember hearing it after the overhaul.

So...are you supposed to hear a little bit of turbo spooling on a stock car? Or should you hear nothing? I checked hoses and apparently they are ok, and oil consumption semms normal, almost zero.

I'd like to know if i'm too paranoid or not...what is your opinion??

Thanks!!
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