Exhaust manifolds. Paint? Coating(s)? - NCRS Discussion Boards

Exhaust manifolds. Paint? Coating(s)?

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • James W.
    Extremely Frequent Poster
    • November 30, 1990
    • 2647

    #16
    Re: Exhaust manifolds. Paint? Coating(s)?

    Way back in 1981 when I was seventeen and finshing the restoration on my '64, I used a high temp manifold paint of some kind and did as Tom did and baked them on my patents gas grill at 500+ degrees. I think the key to getting a good, long lasrting finish is the surface prep. I took mine to our local funeral/headstone business and had them sand blasted to a white metal finish. Then applied the paint in light coats and baked them on the grill at 500+ degrees for an hour or so. They are still holding up great.

    James
    Attached Files

    Comment

    • Michael J.
      Extremely Frequent Poster
      • January 26, 2009
      • 7100

      #17
      Re: Exhaust manifolds. Paint? Coating(s)?

      I've always just had them bead blasted and painted them like the factory did, so that you get the right burn-off for judging.
      Attached Files
      Big Tanks In the High Mountains of New Mexico

      Comment

      • Tony S.
        NCRS Vice President, Director Region VII & 10
        • April 30, 1981
        • 981

        #18
        Re: Exhaust manifolds. Paint? Coating(s)?

        I use Pre-Lube 6. Works well. Tony
        Region VII Director (serving members in Arkansas, Kansas, Louisiana, Missouri, Oklahoma and Texas).
        Original member of the Kansas City Chapter, est'd 07/11/1982.
        Member: 1965 and 1966 National Judging Teams
        Judging Chairman--Kansas City Chapter.
        Co-Editor of the 1965 TIM and JG, 6th and 7th editions.

        Comment

        • David H.
          Extremely Frequent Poster
          • June 30, 2001
          • 1502

          #19
          Re: Exhaust manifolds. Paint? Coating(s)?

          Richard

          Attached is close-up of exhaust manifold surface using "Dry Slide" graphite. That surface you can see, it does not appear "coated".

          Dave

          Manifold Surface Graphite.jpg
          Judging Chairman Mid-Way USA (Kansas) Chapter

          Comment

          • Richard K.
            Very Frequent User
            • March 31, 1988
            • 207

            #20
            Re: Exhaust manifolds. Paint? Coating(s)?

            Thanks to all. I love the pics of your cars & equipment. You've been a great help.

            My engine compartment was completed some time ago and the manifolds are just starting to show rust. I used a dry graphite spray on them when they were off the car, and they've only been exposed to the air in my garage. For their heat-curing they've only been through the engine break-in process. I just think that showing a little rust ruins the overall "beauty" of the restored compartment. IMHO.

            I'm leaning toward the Por-15, and baking it on. Mostly because the process can all be done at my house, and at lower cost.

            Thanks again

            Comment

            • Richard G.
              Extremely Frequent Poster
              • July 31, 1984
              • 1715

              #21
              Re: Exhaust manifolds. Paint? Coating(s)?

              I too am a fan of Por-15
              Here is a picture of a set that was completed 20 years before the motor was started.
              IMG_4264.jpg
              They still look almost that good after the motor has been running for a couple years.
              I will admit they have less than 500 miles on them.

              Comment

              • Jim L.
                Extremely Frequent Poster
                • September 30, 1979
                • 1806

                #22
                Re: Exhaust manifolds. Paint? Coating(s)?

                Originally posted by Richard Kossum (12684)
                Many years ago, Greg Ellis wrote an article for the Restorer titled "Concourse Exhaust Manifold Preparation". His preferences, after some experimentation, in order of preference were:

                1. Calyx Manifold Dressing
                2. Cast Blast 1200
                3. Copper spray paint
                4. Dry graphite lube
                5. Crane Cam Lube

                Are there any newer products that are the current thinking?
                Also just curious, does anyone bake the manifolds, or apply heat to them by torch, to cure the coating before putting them back on the car?

                Thanks much.
                This posting put a smile on my face.

                Back in the day, copper paint (with 7% solids) was the "hot ticket", as it were. There were no other high temp coatings available.

                So I bead blasted my exhaust manifolds and painted them with copper.

                I can't vouch for how long the coating will last, though. That was only 40 years ago.


                101_9066.jpg

                101_9067.jpg

                Comment

                • Terry M.
                  Very Frequent User
                  • November 30, 2005
                  • 175

                  #23
                  Re: Exhaust manifolds. Paint? Coating(s)?

                  Like Tony, I use Pre-Lube 6 and have been pleased with the result. I did a lot of research on the forum before making a decision and decided on the Pre-Lube 6 based on the comments I found. One plus is that you can do it yourself. On a side note, make sure your machined flanges (head side) are flat and in line before bolting them to the heads. This is especially important if you are not using gaskets (like factory).

                  Terry

                  Comment

                  • Troy P.
                    Extremely Frequent Poster
                    • January 31, 1989
                    • 1279

                    #24
                    Re: Exhaust manifolds. Paint? Coating(s)?

                    Depends on your intended use of the car. Lots of cast grey choices in coatings and paints. But if you are going for originality you have to paint engine color.

                    I painted mine using Chevy orange with a paint containing ceramic. Figured the ceramic would provide some durability benefit. But during judging at nationals I was hit because the ceramic paint burn off doesn't match the factory burn off with the el-cheapo factory paint. So if you are going with originality go the el-cheapo orange route.

                    However, an option that might be worth trying is to use one of the high temp cast iron paints or coatings and paint engine orange over that. Then when the orange paint burns off the manifolds might still be protected from rusting.

                    Comment

                    • Gary B.
                      Extremely Frequent Poster
                      • January 31, 1997
                      • 6994

                      #25
                      Re: Exhaust manifolds. Paint? Coating(s)?

                      Tony,

                      Not for years/engines that the manifolds never painted engine orange by GM. I believe that is the only focus of this thread.

                      Gary

                      Comment

                      • Michael J.
                        Extremely Frequent Poster
                        • January 26, 2009
                        • 7100

                        #26
                        Re: Exhaust manifolds. Paint? Coating(s)?

                        True, if you coat the manifolds in some expensive material before painting them Chevy orange, as the factory did on say C2s, the burn-off will not pass judging requirements, that is why I have always done it as the factory did, never a deduction. But if you don't care about judging, and want them to always look new, then these kind of coatings are good.
                        Big Tanks In the High Mountains of New Mexico

                        Comment

                        • John D.
                          Extremely Frequent Poster
                          • November 30, 1979
                          • 5507

                          #27
                          Re: Exhaust manifolds. Paint? Coating(s)?

                          Excellent photo and info Mike. A mistake that was made on my 63 FI car is the exhaust manifolds were not painted orange.

                          Comment

                          • Michael J.
                            Extremely Frequent Poster
                            • January 26, 2009
                            • 7100

                            #28
                            Re: Exhaust manifolds. Paint? Coating(s)?

                            Thanks, luckily my '63 Z06 tankerZ06Engine.jpg's was, no deductions......
                            Big Tanks In the High Mountains of New Mexico

                            Comment

                            • Michael J.
                              Extremely Frequent Poster
                              • January 26, 2009
                              • 7100

                              #29
                              Re: Exhaust manifolds. Paint? Coating(s)?

                              Originally posted by Gary Beaupre (28818)
                              Tony,

                              Not for years/engines that the manifolds never painted engine orange by GM. I believe that is the only focus of this thread.

                              Gary
                              I didn't notice that qualifier, or which years, etc. I was only speaking for C2s, most of which had the exhaust manifolds installed before the engine was painted, only the '66-'67 small blocks had them installed after painting, according to the TIM&JGs.
                              Big Tanks In the High Mountains of New Mexico

                              Comment

                              • Gary B.
                                Extremely Frequent Poster
                                • January 31, 1997
                                • 6994

                                #30

                                Comment

                                Working...
                                Searching...Please wait.
                                An unexpected error was returned: 'Your submission could not be processed because you have logged in since the previous page was loaded.

                                Please push the back button and reload the previous window.'
                                An unexpected error was returned: 'Your submission could not be processed because the token has expired.

                                Please push the back button and reload the previous window.'
                                An internal error has occurred and the module cannot be displayed.
                                There are no results that meet this criteria.
                                Search Result for "|||"