Air intake duct comes loose

[AlfaNeely@domain.elided]

       Fred and the others who suggested new motor mounts are quite correct.  
However, I have had the same problem on Bosch spiders that had new motor 
mounts.
      I suspect that over tightening the clamp at the air flow meter end can 
cause it to creep off.  There is a bit of a taper at the very end and even 
carefully getting the clamp on the flat part is not always successful.
       My 84 SCCA ITB Spider race car is the biggest problem.  I ended up 
gluing it in place.  It was at the track and all I had was 3M black Weather 
Strip Adhesive.  The duct pulled part way off again before the glue 
completely set up.  It has been partly off but well glued the past year or so.
       However my hose split on the other end and I now have to replace it.  
I may try to cut some grooves in the mounting surface.  Or I may glue it 
again.  It depends on how successful I am at getting the air flow meter 
chucked up on the lathe.
 
       I once put Armor All on the hose, inside and outside.  That was not a 
success story!
       
Ciao,
Russ Neely
Oklahoma City


In a message dated 05/15/2002 4:43:06 AM Central Daylight Time, 
owner-alfa-digest@domain.elided writes:


> Date: Wed, 15 May 2002 02:04:52 -0400
> From: "Dave Martin" <dwmartin@domain.elided>
> Subject: Air intake duct comes loose
> 
> Hello listers, you have been so helpful - here is another question -
> The air intake duct on my 87 Spider Quadrifoglio keeps coming loose.
> This is the duct that connects to the air flow sensor and goes across the
> top of the engine to another duct that then connects to the throttle body.
> It is the duct-to-air flow sensor joint that keeps coming loose.  This
> connection is just a slip fit, with a clamp like a large hose clamp.  There
> is no ridge or lip on the mating surface of the air flow sensor to help keep
> the duct on, and the way that all the parts fit on my car, there is some
> tension on this joint such that the duct keeps pulling off.

<snip>

> Has anyone had a similar problem?  What was your solution?  Anyone have any
> other ideas?
> 
> Dave Martin
> Endwell, NY
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