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Hot Rods Breaking in Nickel plated or ceramic flathead headers

Discussion in 'The Hokey Ass Message Board' started by Binkman, Dec 6, 2021.

  1. Binkman
    Joined: Nov 4, 2017
    Posts: 379

    Binkman
    Member

    On my last build I used nickle plated Red's headers on a 286 inch flathead. It was a mild build with an Isky 400jr cam and 2 97's.
    The car started right up on first try and ran well.
    I never gave it a second thought about "break in" time for the headers.
    They never turned colors and look as good today as they did when I installed them.
    I am thinking of going ceramic coating this time but it says to use other headers to break the engine in before installing the ceramic coating.
    Has anyone actually done this ?
    I am wonderng if stainless might be a better choice. PC210011.jpeg
     
  2. Budget36
    Joined: Nov 29, 2014
    Posts: 13,241

    Budget36
    Member

    I’ve never heard that about ceramic coated headers.
     
  3. spanners
    Joined: Feb 24, 2009
    Posts: 2,091

    spanners
    Member

    The only thing I was told was to drive sedately for a day so as to not put too much heat into them initially. Did that and after 10 years they were still good and that was on an every day driver. The ones on my avatar didn't get the same sedate driving and they went off after a while.
     
  4. fresh hops
    Joined: Oct 19, 2019
    Posts: 67

    fresh hops

    I had my headers ceramic coated and the direction I was given was to have the timing set as well as the Air/fuel ratios correct before I installed them. I had no issues with mine.
     

  5. 302GMC
    Joined: Dec 15, 2005
    Posts: 7,867

    302GMC
    Member
    from Idaho

    Cad flathead exhaust manifolds were porcelainized. Our local muffler shop sold a few sets of flathead ford Fentons that were porcelain coated here in town.
     
  6. When you are breaking in a fresh mill you keep the revs up until the cam beaks in. When an engine is revving stationary with no load the headers get pretty hot, I have actually seen them glowing red on a more modern big block car. I got an idea that the abnormal heat is not good for the ceramic coating.

    I know on painted headers when they are fresh we like to warm 'em and let 'em cool a few times before we get after it. The paint is less likely to flake off if it gets cured well first.

    Anyway just my thoughts on it.
     
    loudbang likes this.
  7. That is a CYA from the MFGR. A too lean condition will torch the ceramic right off the header. I used to sell dozens of set of coated headers from PARR. That is the only thing they would not warranty
     
  8. None of my ceramic coated headers have ever discolored or had any finish issues........in over 30 years......with lots of miles on them.......
     
    sidevalve8ba likes this.

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