turbo whine

3ddiver · #1 (**permalink**) 01-31-2007, 02:31 PM

I was just wondering why the turbo whine goes away at about 2000 rpm. Is this normal or do I have a problem because it seems like it should get louder as you push it harder. Thanks for the input because I am still learning about these beasts.

**Rodslinger** · #2 (**permalink**) 02-01-2007, 04:13 AM

BUMP for one of the smart guys.

3ddiver · #3 (**permalink**) 02-01-2007, 02:03 PM

I dont understand ?

**Dave** · #4 (**permalink**) 02-01-2007, 02:05 PM

what year truck

**Rodslinger** · #5 (**permalink**) 02-01-2007, 02:13 PM

Quote:

Originally Posted by 3ddiver

I dont understand ?

Sorry - "BUMP" just means I responded to your post to get it back up to the top of the list for better visibility. That way one of the Techs or someone smarter than I, with regard to your question, will see it and help answer.

Oh and WELCOME to Powerstroke.org!

**sea71** · #6 (**permalink**) 02-01-2007, 02:27 PM

Nope, Im not one of the smart guys!!

I just wanted to Welcome you to the site!!

3ddiver · #7 (**permalink**) 02-02-2007, 03:16 AM

Sorry, I thought I put the truck info in the post. It is a 2005 F-250 crew cab 4x4. Rodslinger, thanks for trying to help the vis.

aycedad · #8 (**permalink**) 02-02-2007, 01:25 PM

The turbo is spooled by the exhaust and really starts to spin about about 1300-1500 rpms and then. Your boosting at that point but not real high. As RPMS increase, the more air passes over the exhaust wheel and spins turbo even faster, thus causing it to build higher pressures and creating the whine that you hear. It whines at lower RPMS but not as noticeable in the cab.

Keith

3ddiver · #9 (**permalink**) 02-02-2007, 02:40 PM

Mine whines only at the lower rpms and not at all at the higher ones.

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