MBRP 4" install now clunking sound - Ford Powerstroke Diesel Forum
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post #1 of 22 Old 01-31-2011, 09:41 AM Thread Starter
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MBRP 4" install now clunking sound

So here is another shameless plug of my you tube video...

Now that that is out of the way. Since the install was completed by my local shop there is a clunk sound when I go around a sharp corner. Is this typical or should I take it back and have it looked at?

Brian


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post #2 of 22 Old 01-31-2011, 03:36 PM
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Get under the truck and shake the piping. Helps me find the squeaks and bumps.


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post #3 of 22 Old 01-31-2011, 04:37 PM
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Yea most definitely get under there and shake it. I would suspect its near the tail pipe. I know in the front off the down pipe its super tight due to the turbo. As it goes father back it has a little movement from the hangers.

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post #4 of 22 Old 01-31-2011, 06:10 PM Thread Starter
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Quote:
Originally Posted by HeavyAssault View Post
Get under the truck and shake the piping. Helps me find the squeaks and bumps.
yea I tried that... I couldn't really tell. I was wondering for those that have the same exhaust do they have anything like that. Also another weird thing is there is a vibration coming from under the floor. It is most notable on the gas pedal at about 1500 RPM on the highway at 65ish.

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post #5 of 22 Old 01-31-2011, 06:16 PM
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I had a similar issue, and found it was one of the hangers slamming against the frame rail. Just cut that bugger a little shorter with a sawzall, and bingo.

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post #6 of 22 Old 01-31-2011, 06:18 PM
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The vibration could be due to the down pipe touching the pinch weld. Try taking a pry bar and create more space between the pipe and pinch weld

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post #7 of 22 Old 01-31-2011, 06:20 PM
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My buddies 4" was rubbing on a transmission line, it was jingling more than clunking. May want to look at it
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post #8 of 22 Old 01-31-2011, 06:33 PM
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Quote:
Originally Posted by dz4swamper View Post
The vibration could be due to the down pipe touching the pinch weld. Try taking a pry bar and create more space between the pipe and pinch weld
I had to do the same thing


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post #9 of 22 Old 01-31-2011, 06:37 PM
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yay so mine that i just did myself on saturday in my gargage the biggest thing i had an issue with was the down tube. It was eighter on the frame rail, on the corss pipe or the clamp was on the trans tupe. Its realy a fine line up there and you just have to get a good 1/2 clearence.

I ended up cutting the tail pipe hanger off and i didnt use it. I have my last hanger right behind what was the muffler. I tested it and its pretty firm so i left it. So fare i havnt herd any banging or ratteling. I will have to recheck it in a few day.

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post #10 of 22 Old 01-31-2011, 07:32 PM
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Quote:
Originally Posted by dz4swamper View Post
The vibration could be due to the down pipe touching the pinch weld. Try taking a pry bar and create more space between the pipe and pinch weld
Quote:
Originally Posted by LNS4x4 View Post
I had to do the same thing
Yup! This is quite common...

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