[s-cars] Dodged another bullet or "Oh My!"

[Mtgadbois at aol.com]

Jim:
 
I had something like that happen to me 3 years ago.  Bolts backed out,  gear 
cracked.  Cost me 4 valves, some money and time,  I used locktite  when I put 
it back together.  So far so good - 34,000 miles.  I also  went RS2 - the head 
was off, why not.
 
Mark near Chicago
 
 
Prior messages:
 
Date: Tue, 29 May 2007 11:46:22 -0400
From: Ingo Rautenberg  <ingo.rautenberg at gmail.com>
Subject: Re: [s-cars] Dodged another bullet  or "Oh My!"
To: s-car-list at audifans.com, audijim at comcast.net
Message-ID:  <A8D21F99-D4DD-4ED7-B029-378771178DCD at gmail.com>
Content-Type:  text/plain;    charset=US-ASCII;    delsp=yes;     
format=flowed

Jim,

You meant here for the  pics:

http://www.tdif.com/phpBB2/gallery2.php?g2_itemId=6179

Looks  like they were all about to be sheared off.  Did you use any  
kind  of lockdown washer on those bolts?

Ingo

On May 29, 2007, at 11:29  AM, s-car-list-request at audifans.com wrote:

> From:  audijim at comcast.net
> Date: May 28, 2007 12:52:31 PM GMT-04:00
> To:  s-car-list at audifans.com
> Subject: [s-cars] Dodged another bullet or "Oh  My!"
>
>
> I have something to confess, my S4 is a problem  child. Over the  
> past few weeks, I have been secretly stressing  about a knock in my  
> engine. I would start the engine in the  morning and get a horrible  
> knock sound what would go away as the  engine warmed up. It was  
> getting worse, and this holiday weekend,  I finally had time to take  
> a look at it. Actually, let me go back  a week when I thought I had  
> it diagnosed as a serpentine belt  tensioner pulley that had a bad  
> bearing. I ordered new stainless  steel bearings from McMaster-Carr  
> and they arrived Friday (hell,  I ordered them Friday and they were  
> waiting for me when I got  home from work the same day! Unbelievably  
> fast) Side note:  looking at the pulley, the bearing does not look  
> to be pressed  in, it is riveted in place by the two halves of the  
> pulley. I  have a spare serp tensioner and before I replaced any  
> bearing, I  swapped on to the AAN, no change in knock sound! But  
> while I had  the tensioner off, I put tension on the belt with my h
>  ands  a
> nd I saw the serp belt pulley portion on the crank pulley move!  I  
> found my knock! Some how, some way, the four bolts holding  the  
> crank pulley to the crank's timing belt gear wore away and  the serp  
> pulley started getting loose. When the tensioner was  applying  
> tension to the serp belt, it was putting force on the  pulley and  
> making a knock sound at the same time as RPM would on  a single  
> cylinder. I had a spare crank balancer/pulley assembly  and  
> installed. Check out the pictures on what I found. http://  
>  www.tdif.com/phpBB2/viewtopic.php?t=1432#13621
>






************************************** See what's free at http://www.aol.com.