Announcement

Collapse
No announcement yet.

Exhaust manifold-gctid362427

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Exhaust manifold-gctid362427

    Hi, any one out there that has replaced an exhaust manifold . I have a 2352 hardtop with a 4 year old vortec 4.3 v6 & its time to replace the manifolds. I,ve priced the stainless steel ones, expensive & are they as good as they say, aluminium manifolds ? Any info would be greatly appreciated.

    Regards

    Alan

    #2
    What makes you think you need new ones. Ebay has some great deals on manifolds. I would stick with cast Iron.

    Comment


      #3
      Thunder wrote:
      What makes you think you need new ones. Ebay has some great deals on manifolds. I would stick with cast Iron.
      hey thunder, thanks for reply, 2 plugs on seem to be rusting up , i afraid water getting into head, would a new set of gaskets do the job ? , cheers

      Comment


        #4
        Maybe, I would pull the risers off and give it a good look. Looking at the water jackets will give you a good idea what the condition is. If they look okay use the good gray stainless riser gaskets from Merc or Glm.

        Thunder

        Comment


          #5
          It is recommended replacing the Merc manifolds if there is less than 1/4" of material between the exhaust port and the water jacket. The material thickness should not include any corrosion.

          This in addition to making sure you have a good surface for the gasket to seal.

          Comment


            #6
            ALAN DEVOY wrote:
            Hi, any one out there that has replaced an exhaust manifold . I have a 2352 hardtop with a 4 year old vortec 4.3 v6 & its time to replace the manifolds. I,ve priced the stainless steel ones, expensive & are they as good as they say, aluminium manifolds ? Any info would be greatly appreciated.

            Regards

            Alan
            What year is your boat? Are you in salt-water or fresh water?

            Comment


              #7
              myflies wrote:
              It is recommended replacing the Merc manifolds if there is less than 1/4" of material between the exhaust port and the water jacket. The material thickness should not include any corrosion.

              This in addition to making sure you have a good surface for the gasket to seal.
              Thanks for reply, checked them out & they need replacing, any thoughts on alum. or cast or the best manufacturer, cheers

              Comment

              Working...
              X