Whats the best way to find out if turbo whine is due to balance?
 

I swapped compressor wheels out using a pre-balanced compressor wheel. I'm trying to figure out if the increased turbo whine is due to the fact I'm running a bigger trim or if its out of balance.

Re: Whats the best way to find out if turbo whine is due to balance?
 

Whine is caused by airflow dynamics, both on the compressor and turbine sides of things, but predominantly the intake tract.

Imbalance leads to worn bearings--> scraping against housings, leaky oil smoking turbos, and exploded wheels. Not whining.

Re: Whats the best way to find out if turbo whine is due to balance?
 

I'm going to guess a wheels scrapeing from an balance stack. Basicly from the wheels being balanced seperatly, but not indexed together so the assembly is out of balance.

Re: Whats the best way to find out if turbo whine is due to balance?
 

:3

Re: Whats the best way to find out if turbo whine is due to balance?
 

I'm with Wheezer.

:3

Re: Whats the best way to find out if turbo whine is due to balance?
 

The wheel isn't scraping. However I do know that an imbalanced compressor and turbine assembly does create more whine because it wobbles. This wobbling creates instability in the air flow which results in more whine.

Re: Whats the best way to find out if turbo whine is due to balance?
 

You don't know ----, dildo monkey. :3

Re: Whats the best way to find out if turbo whine is due to balance?
 

" With the increasing popularity of small turbos in automotive applications, stackup unbalance has become more of a factor. Due to the light mass and high rotational speeds of these small units, simply balancing the components to an overly close tolerance may not be enough. The typical symptoms of a slightly unbalanced small turbo are oil leakage from the ends of the bearing housing, and “screaming,” an unbalance induced vibration of the rotating assembly. The fastest, most effective method of eliminating the stackup unbalance that causes these problems is to trim balance the moving parts of the assembled turbo CHRA (center housing rotating assembly)."

http://www.---------------.com/old/letter.htm

Apparently I know more than you ... Ass clown :1

Go read some articles on surge and what can induce it.

Re: Whats the best way to find out if turbo whine is due to balance?
 

So your asking questions on here why.... ???

Re: Whats the best way to find out if turbo whine is due to balance?
 

To get advice from people smarter than him