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In the discussion thread: Car turbo-charger question. [View all]

Response to Hoppy (Original post)

Sun Apr 24, 2016, 11:18 AM

3. It's the turbo "spooling up"

The high pitch means that it is a relatively small turbosupercharger (full name). At moderate levels of boost, it actually makes the engine a bit more efficent.
Big turbos, like a diesel truck or one of the (really sick) race or rally cars my buddies build, have a lower pitch, and a bit of a whistle when they start to make boost, or spool down off-throttle.
Some considerations for a new turbo owner: Don't stint on oil changes, and full synthetic is a good idea, due to it's ability to handle the heat. Old, dirty oil will turn to burnt carbon in the turbocharger bearing ("Coke the turbo", which means a new turbo, and other engine damage. Be fussy about your fuel, both about octane and cleanliness. Water contamination tends to make ethanol blend fuels (E-10 is pretty much normal gas these days) "fall apart", and there are several ways this can harm the engine "on boost". Personally, if a tank of gas is going to be in the car more than a couple weeks, I'd add an "ethanol stabilizer" shot.
If some "whiz kid" tries to talk you into doing something to "hop up" power by monkeying with boost and other settings, shine 'em on. There is a fair amount of safety margin in the stock "tune", and if you're not into blowing stuff up, that's a very good thing.

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Replies to this discussion thread
Arrow 5 replies Author Time Post
Hoppy Apr 2016 OP
JayhawkSD Apr 2016 #1
Hoppy Apr 2016 #2
LineNew Reply It's the turbo "spooling up"
Mopar151 Apr 2016 #3
Ford_Prefect Apr 2016 #4
Mopar151 May 2016 #5
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