Howl After Replacing Up Pipes
Thread Starter
|
Junior User
Joined: Aug 2010
Posts: 50
Likes: 0
From: so-cal
Howl After Replacing Up Pipes
Ok, So last weekend I replaced my up pipes on my 2000 excursion with 210K miles on it. When taking everything apart I noticed that all 4 of the bolts that hold the turbo together (the exhaust housing to the compressor housing) were either loose or completely backed out. I then replaced the bolts and snugged the turbo back together. I put everything back together, finished installing the up pipes and then I went for a test drive. My boost level on my econo tune went from 20 lbs max (before the new up pipes) to 21-22 lbs max after the up pipes, however whenever the turbo begins to spin or when I shut the truck off I can hear a howl that I never had before. As soon as my ex begins to have any boost (1+ psi) the howl disappears. If I am at highway speeds (turning 1300+ rpm) coasting then I apply the throttle there is no howl, it seems to be at very low rpm with very little throttle. I checked for play in my turbo and I did not feel any (side to side or in and out). The howl is not very loud, if I have the radio barely on I can't hear the howl.
I have checked all my boots on my IC and everything I took apart. Am I missing something or is my turbo on its way out?
I have checked all my boots on my IC and everything I took apart. Am I missing something or is my turbo on its way out?
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
I can think of two possibilities, without having a vid to hear it:
- One of your IC tubes are seated too deep into your upper boot, allowing it to vibrate against the hard-mounted spider.
- Your intake sucks. Many people with 6637s (and the like) get a lot of noise from a properly-working turbo.
Laughing Gas
Joined: Nov 2010
Posts: 1,193
Likes: 2
From: D.C. but heart's in TEXAS
I don't mean this to be a silly question, but what in the heck are "chonies" 
I have no idea what you are talking about. 
I have no idea what you are talking about.
Posting Guru
Joined: Aug 2009
Posts: 1,025
Likes: 0
From: ellensburg
Ehhh I'm betting its some frequency related vibration. I'd go back over everything and see if your new uppipes are touching the firewall anywhere, or your downpipe. If not that, then check intercooler pipes etc.
Lastly, forget the 20's for boost number. Havent experienced a permagrin until you catch 5th gear and hit 40psi of boost out of a s468 flowing right around 1350 CFM....That right there is a beautiful feeling.
Lastly, forget the 20's for boost number. Havent experienced a permagrin until you catch 5th gear and hit 40psi of boost out of a s468 flowing right around 1350 CFM....That right there is a beautiful feeling.
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
Trending Topics
Cargo Master
Joined: Jan 2009
Posts: 2,800
Likes: 31
From: OKC, OK
I believe it is actually Spanish right? Not.slang.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
I've seen references to it in urban dictionaries (there's an exciting read), so I can't always keep my English from my Spanish from my Spanglish.
Pinche lengua.
Pinche lengua.
Thread
Thread Starter
Forum
Replies
Last Post
Christof13T
1999 - 2003 7.3L Power Stroke Diesel
21
Oct 3, 2012 09:09 AM
60RatRod
1999 - 2003 7.3L Power Stroke Diesel
12
Nov 7, 2009 06:26 PM