Whats the best way to find out if turbo whine is due to balance?
3.0 BAR
Joined: Oct 2006
Posts: 2,329
Re: Whats the best way to find out if turbo whine is due to balance?
Originally Posted by Obscene_CNN
My faux pah, I guess my mind couldn't imagine that someone would actually boast about working with a SSAC turbo so it read it as SCCA.
I guess your just to stupid to realize I was the master all along.
Now go ---- your mom some more and tell her a real man might stop by some day.
I guess your just to stupid to realize I was the master all along.
Now go ---- your mom some more and tell her a real man might stop by some day.
JD can defend himself, but I know hes not all about bragging.
You should know that the last ssac turbo car Joseph tuned put down about 406hp. Not bad for a $200 turbo.
Just because you "rebuilt" a turbo (a fairly easy one I might add) doesnt mean you know everything. The capability to use a micrometer is also as such.
If you do know something about engines, turbos, cars, etc. then show us.
This is not the place to come asking questions and then attack ppl who give you an answer, you cant always be right. This isnt honda-tech.
0.0 BAR
Joined: Feb 2003
Posts: 0
Re: Whats the best way to find out if turbo whine is due to balance?
Originally Posted by Obscene_CNN
My faux pah, I guess my mind couldn't imagine that someone would actually boast about working with a SSAC turbo so it read it as SCCA.
Thread Starter
0.5 BAR
Joined: May 2006
Posts: 83
Re: Whats the best way to find out if turbo whine is due to balance?
I was polite and respectful to those who were actually of some help. JD was just an *** hole and an ignorant one at that. Besides JD started this ---- and if he can't take it he should join one of those hybrid prius forums with the rest of the emotionally sensitive ****.
"Turbochargers are now commonly used in passenger cars especially in application with diesel engines because of their numerous advantages. The use of this machine greatly improves engine performance, while at the same time allowing pollutant emissions to be reduced. However, one of the important issues to take into account when a turbocharger is used in passenger cars is the whistling noise due to unbalanced forces that can be perceived by the driver, which causes discomfort. The manufacturer's efforts to reduce the whistling noise are centred on reducing the unbalanced forces by a correct balance of rotating parts. However, improving the balance means increasing the manufacturing cost as this process is very expensive. Selecting the maximum unbalance admissible is a key activity during the development of a new application. In this paper, a procedure to control the turbocharger whistling noise vs. unbalanced forces variation has been suggested in order to maintain the acoustic comfort of the vehicle."
http://inderscience.metapress.com/li...trw5arm7m0j3tp
HiProfile was actually some help.
I disassembled my housing and checked the thickness of the gasket. It was 25 mils thick after being compressed. A second gasket I bought was only 15 mils thick uncompressed. It turns out the first gasket I used was actually two stuck together.
The whine has dropped quite a bit with the new gasket. It is still louder than the original wheel but I will chalk that up to imbalance.
With the new gasket boost comes on sooner and is higher at cruise.
"Turbochargers are now commonly used in passenger cars especially in application with diesel engines because of their numerous advantages. The use of this machine greatly improves engine performance, while at the same time allowing pollutant emissions to be reduced. However, one of the important issues to take into account when a turbocharger is used in passenger cars is the whistling noise due to unbalanced forces that can be perceived by the driver, which causes discomfort. The manufacturer's efforts to reduce the whistling noise are centred on reducing the unbalanced forces by a correct balance of rotating parts. However, improving the balance means increasing the manufacturing cost as this process is very expensive. Selecting the maximum unbalance admissible is a key activity during the development of a new application. In this paper, a procedure to control the turbocharger whistling noise vs. unbalanced forces variation has been suggested in order to maintain the acoustic comfort of the vehicle."
http://inderscience.metapress.com/li...trw5arm7m0j3tp
HiProfile was actually some help.
I disassembled my housing and checked the thickness of the gasket. It was 25 mils thick after being compressed. A second gasket I bought was only 15 mils thick uncompressed. It turns out the first gasket I used was actually two stuck together.
The whine has dropped quite a bit with the new gasket. It is still louder than the original wheel but I will chalk that up to imbalance.
With the new gasket boost comes on sooner and is higher at cruise.
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