[Healeys] Engine Mounts

[michael.salter at gmail.com]

Hi Dave,

Not sure how relevant this is but I have noticed that most rubber to steel bonding seems to start at the edges, particularly on original components. 

I am inclined to believe that a large contributing factor in the steel to rubber bond is actually caused by corrosion of the steel.

Also usually it seems that the oxidation of the rubber is a quite thin layer and the underlying rubber is still in perfect condition although very old.

Of course this is not always the case as very deep cracks in the engine mount rubber blocks are not uncommon. 

Just my observations. 

Michael S 

BN1 #174

With original BSF thread engine mounts..




Correct diagnosis is half of the repair.






On Sun, Nov 13, 2016 at 11:20 AM -0500, "David Porter" <frogeye at porterscustom.com> wrote:











  
    
  
  
    

Rubber continues to vulcanize throughout it's life time. As such
      it hardens and shrinks and eventually pulls the adhesive away from
      the mounts. Perhaps, one could use the new body panel epoxy's to
      reattach the rubber, but you would still have a very hard rubber
      buffer....
    

dp

    
    

    On 11/12/2016 5:24 PM, WILLIAM B
      LAWRENCE wrote:

    
    
      
      
      
      
      
      
      
        
          

The current thought is that rubber ages as well as being
            detrimentally affected by UV and environmental ozone. As
            such we are told not to use tires that are over six years
            old. I think the same thing happens to other rubber parts as
            well. I've installed rubber plugs and grommets on my BN1
            that deteriorated with 6 months of installation. For that
            reason I won't buy "NOS" rubber parts and I think any new
            rubber parts should be date coded.
        
        
        From:
            Healeys <healeys-bounces at autox.team.net> on behalf of
            Bob Spidell <bspidell at comcast.net>

            Sent: Saturday, November 12, 2016 2:24:11 PM

            To: Healeys

            Subject: [Healeys] Engine Mounts
           
        
      
      
          The engine mounts on my BJ8--whose
            engine I am overhauling--had the
            

            rubber part separating from their metal backing.  This
            didn't surprise 

            me, as they have 25+ years and 120K+ miles on them. However,
            I got under 

            the BN2 the other day and noticed its mounts were separating
            as well, 

            and these only have a few years and a few hundred miles on
            them.   

            Apparently--like most rubber or rubber/metal parts from
            contemporary 

            suppliers--they are crap. Anyone know a source for quality,
            durable 

            engine mounts for Big Healeys?

            

            TIA,

            

            Bob

            

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    -- 

      Dave Porter
      Porter Custom Bicycles
      2909 Arno St. NE
      Albuquerque, NM 87107
      505-352-1378
      Go HERE: my world www.porterbikes.com/
    
  






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