[V8] squealing serp belt oddity

[Scott Simmons]

Why is there a difference between auto and manual?  The difference of 
30mm isn't much.



urq wrote:

>TFA indicates the following lengths:
>
>    PT Automatic  - 2460mm
>    PT Manual     - 2433mm
>    ABH Automatic - 2480mm
>
>HTH!
>Steve B
>San José, CA (USA)
>
>-----Original Message-----
>From: v8-bounces at audifans.com [mailto:v8-bounces at audifans.com] On Behalf Of
>Ron Wainwright
>Sent: Monday, September 24, 2007 1:09 PM
>To: Coleman, David
>Cc: v8 at audifans.com
>Subject: Re: [V8] squealing serp belt oddity
>
>Not sure. They looked the same when I was doing
>George's swap. I think I used the 4.2 pully in any
>event.
>
> But find out which pully you have Dave.
>& not sure if the 3.6 too 4.2 Auto belts are the
>same...but I do know the Manual 3.6 belt is shorter.
>
> Ron
>
>--- "Coleman, David" <David.Coleman at blackrock.com>
>wrote:
>
>  
>
>>Is there an easy way to tell the pulleys (3.6, 4.2,
>>manual, automatic)
>>apart?
>>
>>I still have a pulley on my old motor; I'll have to
>>run out to see if
>>it's still torqued down.
>>
>>
>>
>>
>>
>>
>>    
>>
>>>-----Original Message-----
>>>From: Ron Wainwright [mailto:ron_01056 at yahoo.com]
>>>Sent: Monday, September 24, 2007 4:00 PM
>>>To: Coleman, David
>>>Cc: v8 at audifans.com
>>>Subject: Re: [V8] squealing serp belt oddity
>>>
>>>So if he used the 3.6 pully from you'r old 3.6
>>>      
>>>
>>motor
>>    
>>
>>>than you need the Manual belt.
>>>Conti part#, 6K2433.
>>>
>>> Ron
>>>
>>>--- "Coleman, David" <David.Coleman at blackrock.com>
>>>wrote:
>>>
>>>      
>>>
>>>>Alignment double and triple checked.   And every
>>>>pulley spins freely.
>>>>
>>>>Interesting note on the belt size... I believe I
>>>>have the right size, as
>>>>the first one I got was too big.  I thought that
>>>>        
>>>>
>>was
>>    
>>
>>>>due to the crank
>>>>pulley size difference between 3.6 and 4.2.
>>>>Perhaps there's a smaller
>>>>one still, the one for the 5-speed?  Does that
>>>>        
>>>>
>>mean
>>    
>>
>>>>there are three
>>>>different belt applications for the V8?
>>>>
>>>>Regarding the above, by the way, I believe the
>>>>        
>>>>
>>3.6
>>    
>>
>>>>crank pulley was used
>>>>when Keith swapped the 4.2 motor...
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>        
>>>>
>>>>>-----Original Message-----
>>>>>From: Ingo Rautenberg
>>>>>          
>>>>>
>>>>[mailto:ingo.rautenberg at gmail.com]
>>>>        
>>>>
>>>>>Sent: Monday, September 24, 2007 2:13 PM
>>>>>To: Coleman, David
>>>>>Cc: v8 at audifans.com
>>>>>Subject: Re: [V8] squealing serp belt oddity
>>>>>
>>>>>IMO there is obviously something that either
>>>>>          
>>>>>
>>isn't
>>    
>>
>>>>aligned properly
>>>>        
>>>>
>>>>>(doubt it) or one of your accessories is
>>>>>          
>>>>>
>>putting a
>>    
>>
>>>>severe drag
>>>>        
>>>>
>>>>>relative to everything else.  A/C clutch
>>>>>          
>>>>>
>>going/
>>    
>>
>>>>compressor seizing?
>>>>        
>>>>
>>>>>PS:  You DO have the correct size belt, right?
>>>>>          
>>>>>
>>>>There are two sizes -
>>>>        
>>>>
>>>>>I believe the automatic is bigger and the
>>>>>          
>>>>>
>>5-speed
>>    
>>
>>>>is shorter (forget
>>>>        
>>>>
>>>>>why) -- at least on the 5-speed.
>>>>>
>>>>>Ingo
>>>>>
>>>>>On Sep 24, 2007, at 12:51 PM, Coleman, David
>>>>>          
>>>>>
>>>>wrote:
>>>>        
>>>>
>>>>>>SO - My '91 5-speed with 4.2 has been
>>>>>>            
>>>>>>
>>enduring a
>>    
>>
>>>>squealing
>>>>serpentine
>>>>        
>>>>
>>>>>>belt for several months.  In a nutshell:
>>>>>>
>>>>>>*       It started squealing only at idle,
>>>>>>            
>>>>>>
>>and
>>    
>>
>>>>would go away with
>>>>        
>>>>
>>>>>>higher
>>>>>>RPMs
>>>>>>
>>>>>>*       Broke under load, nursed back home,
>>>>>>            
>>>>>>
>>>>replaced with new, still
>>>>        
>>>>
>>>>>>squealed
>>>>>>
>>>>>>*       Replaced the coil spring behind
>>>>>>            
>>>>>>
>>t-belt
>>    
>>
>>>>cover with known good
>>>>        
>>>>
>>>>>>used; squealing stopped for a month or so
>>>>>>
>>>>>>*       Started squealing again, this time
>>>>>>            
>>>>>>
>>more
>>    
>>
>>>>apparent with higher
>>>>        
>>>>
>>>>>>RPMs; nearly silent at idle.
>>>>>>
>>>>>>*       Replaced shock absorber / tensioner
>>>>>>            
>>>>>>
>>with
>>    
>>
>>>>factory new;
>>>>squeals
>>>>        
>>>>
>>>>>>like a mofo still.
>>>>>>
>>>>>>
>>>>>>
>>>>>>The shock tensioner is fully compressed
>>>>>>            
>>>>>>
>>(i.e.
>>    
>>
>>>>can't make the belt
>>>>any
>>>>        
>>>>
>>>>>>tighter), yet under load, I can watch from
>>>>>>            
>>>>>>
>>>>underneath the belt walk
>>>>        
>>>>
>>>>>>back
>>>>>>and forth across the lower idler pulley -
>>>>>>            
>>>>>>
>>like
>>    
>>
>>>>the belt is just
>>>>still
>>>>        
>>>>
>>>>>>too loose.
>>>>>>
>>>>>>
>>>>>>
>>>>>>Does anyone know if any of the pulleys
>>>>>>            
>>>>>>
>>(aside
>>    
>>
>>>>from the harmonic
>>>>        
>>>>
>>>>>>balancer
>>>>>>/ crank) are different sizes from 3.6 to
>>>>>>            
>>>>>>
>>4.2?
>>    
>>
>>>>The 4.2 belt is way
>>>>        
>>>>
>>>>>>too
>>>>>>big; the 3.6 belt is the one in question.
>>>>>>
>>>>>>
>>>>>>
>>>>>>If no one knows about the pulley sizes,
>>>>>>            
>>>>>>
>>perhaps
>>    
>>
>>>>the Gates number
>>>>        
>>>>
>>>>>>for the
>>>>>>next smaller size???
>>>>>>
>>>>>>
>>>>>>
>>>>>>Any ideas welcome!
>>>>>>
>>>>>>
>>>>>>
>>>>>>-DaveC.  (nice car except it's embarrassing
>>>>>>            
>>>>>>
>>to
>>    
>>
>>>>drive)
>>>>        
>>>>
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