7.3 Turbo Howling - Ford Powerstroke Diesel Forum
 
LinkBack Thread Tools Display Modes
post #1 of 6 Old 08-15-2011, 05:50 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Apr 2011
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
7.3 Turbo Howling

I had excessive axial end play on my original turbo, so I replaced it with a used turbo that has ~25k miles on it. After replacing the turbo I can hear a howling noise. At idle it isn't very apparent, but it increases as the RPMs increase and decreases as they decrease. Before I put the turbo on, I removed the compressor housing and checked the bearing clearances. I had 0.030" radial movement at the end of the compressor wheel and 0.002" axial movement. Both end play measurements were within spec. Has anybody experienced similar problems with a turbo that doesn't have excessive end play? If so, any help is appreciated.

Thanks,
Jake

99.5 F350 Crew Cab Short Box
6.0L Cooler
4" turbo back Diamond Eye exhaust w/5" tip
6637 Intake
DP F5 Tuner - 80 econ, 80 tow, 60 tow, 1500 rpm idle
Autometer Z-series pyro, trans temp, boost gauges
ATS ported housing
jake7995 is offline  
post #2 of 6 Old 08-15-2011, 03:28 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Apr 2011
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Here is a video of the sound.
I listened to the bearing housing with a stethoscope and I can hear a slight howling. I do hear a howling at the compressor housing and at the y pipe. I forgot to mention also that I have an ATS ported housing. Any thoughts?

99.5 F350 Crew Cab Short Box
6.0L Cooler
4" turbo back Diamond Eye exhaust w/5" tip
6637 Intake
DP F5 Tuner - 80 econ, 80 tow, 60 tow, 1500 rpm idle
Autometer Z-series pyro, trans temp, boost gauges
ATS ported housing
jake7995 is offline  
post #3 of 6 Old 08-15-2011, 07:25 PM
Compression Ignition Addict
 
Join Date: Mar 2011
Posts: 1,013
Thanks: 0
Thanked 9 Times in 8 Posts
Mentioned: 0 Post(s)
Quoted: 14 Post(s)
Feedback Score: 0 reviews
So it doesn't sound like turbo whistle, but actual bearing howl? If so, pull that thing down and figure out what's up before it eats itself. Does it spin ok by hand with slight drag from the seals but no metal-to-metal type feeling?
ttyR2 is offline  
post #4 of 6 Old 08-16-2011, 05:02 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Apr 2011
Posts: 11
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
I was trying to convince myself it was something else, but I pulled it apart last night to check it out. It spun fine by hand and the end play was within spec, but the rotating bearing assembly was touching off on the compressor back plate. Here are some pictures in this video.


99.5 F350 Crew Cab Short Box
6.0L Cooler
4" turbo back Diamond Eye exhaust w/5" tip
6637 Intake
DP F5 Tuner - 80 econ, 80 tow, 60 tow, 1500 rpm idle
Autometer Z-series pyro, trans temp, boost gauges
ATS ported housing
jake7995 is offline  
post #5 of 6 Old 03-29-2013, 05:27 PM
Member
 
Join Date: Oct 2012
Posts: 30
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
How did you fix this?
Johnny1 is offline  
post #6 of 6 Old 03-29-2013, 05:43 PM
Compression Ignition Addict
 
jesilvas's Avatar
 
Join Date: Feb 2009
Location: Nacogdoches, TX
Posts: 11,148
Thanks: 0
Thanked 27 Times in 25 Posts
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Feedback Score: 0 reviews
Last Activity: 01-21-2013 11:04 AM
Join Date: 04-14-2011
Thread is from 2011, probably not a good chance of resolution.
If it was a stock turbo, most likely just rebuilt it.



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
330,000 + miles
jesilvas is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome