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Technical New Exhaust Manifold Paint

Discussion in 'Traditional Hot Rods' started by PeggySue, Apr 10, 2018.

  1. PeggySue
    Joined: Sep 5, 2016
    Posts: 241

    PeggySue
    Member

    Installing new(never painted) cast iron exhaust manifolds, don't have the money for professional ceramic coating. Going to use the 2000 degree paint. What prep is needed before painting and do you have to do the high temp paint primer?
     
  2. Dooley
    Joined: May 29, 2002
    Posts: 2,561

    Dooley
    Member
    from Buffalo NY

    they have to be clean and oil/grease free.
    I had mine sandblasted and then painted them with VHT
    they are several years old now

    Non trad motor pic for exhaust manifold only... 20180407_160837.jpg
     
    fortynut likes this.
  3. FrankenRodz
    Joined: Dec 20, 2007
    Posts: 886

    FrankenRodz
    Member

    Spray with Prep Spray Rattle Can to remove contaminants as mentioned. Then spray with VHT Rattle Can.
    Mine instantly greyed-out when I ran the engine, so don't expect the finish color to last. (Cast Iron Metallic was my choice).
     
  4. chevy57dude
    Joined: Dec 10, 2007
    Posts: 4,939

    chevy57dude
    Member

    [​IMG]
    Calyx manifold dressing is a coating.
    I understand the OP is requesting paint advice. This Eastwood product came to mind, though. Brand new parts, now sure is the best time to put a finish on them. Show a picture when you're done!
     
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  5. PeggySue
    Joined: Sep 5, 2016
    Posts: 241

    PeggySue
    Member

    Ok Thanks to everyone. These are brand new , will post pictures when done. Be a bit, have to re-fabricate where they go through fire wall some.
     
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  6. flatheadpete
    Joined: Oct 29, 2003
    Posts: 9,409

    flatheadpete
    Member
    from Burton, MI

    I painted my new manifold on my old Ford 9n tractor. I put it on pretty heavy in two coats with ample time to somewhat dry. I then put it on my old BBQ grille nice and hot for a few hours and let it cool. It's been a few years now and still looks great.
     
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  7. FrankenRodz
    Joined: Dec 20, 2007
    Posts: 886

    FrankenRodz
    Member

    Does it smell like Burgers? I'm Hungry!
     
  8. POR15 has a good exhaust manifold paint. I had mine sand blasted, cleaned up the nasty flash on one of them. Gave them 2 coats of the POR15 spray and baked them in the oven @ 400* for 2 hours. Extremely durable and looks great.
     
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  9. GordonC
    Joined: Mar 6, 2006
    Posts: 1,461

    GordonC
    ALLIANCE MEMBER

    I blasted mine so they were nice and clean then put them in the BBQ on some aluminum foil for about 15 minutes. Pulled them out and hit them with vht grey. I have just got the motor fired so I can't speak to the longevity of them yet.
     
  10. ol-nobull
    Joined: Oct 16, 2013
    Posts: 1,248

    ol-nobull
    Member

    Hi. Is this Eastwood Calyx put on over the surface rust as shown in your photo or how was that area prepped. I really like the way this looks. I will be applying over tube headers that do not yet have any rust if that makes a difference.
    Thanks, Jimmie
     
  11. chevy57dude
    Joined: Dec 10, 2007
    Posts: 4,939

    chevy57dude
    Member

    Eastwood says ok over rust but best results if the surface is first blasted. Then prep with Pre painting prep #10041Z
    One can of dressing will finish several manifolds.
     
    mad mikey likes this.
  12. gas pumper
    Joined: Aug 13, 2007
    Posts: 2,947

    gas pumper
    Member

    Rustoleum BBQ paint comes in silver, flat black and gloss black and maybe white? I used the silver, it turns gray and the flat black fades to dark gray, but the gloss black really does well and holds up and keeps the shine.
     
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  13. PeggySue
    Joined: Sep 5, 2016
    Posts: 241

    PeggySue
    Member

    I see no one said anything about high temp primer, so a person doesn't need to do primer before painting with VHT Flame thrower paint.
     
  14. mcsfabrication
    Joined: Nov 26, 2006
    Posts: 788

    mcsfabrication
    ALLIANCE MEMBER

    Sanderson block hugger headers and the entire exhaust system, used BBQ paint. Silver. Two years and 25,000 miles. Looks like they were done yesterday. And have remained silver.
     
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  15. FrankenRodz
    Joined: Dec 20, 2007
    Posts: 886

    FrankenRodz
    Member

    I never bother to prime if the part is new and rough enough for paint to bite into.
     
    mad mikey likes this.
  16. PeggySue
    Joined: Sep 5, 2016
    Posts: 241

    PeggySue
    Member

    Yep brand new and rough! Thanks
     
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  17. lake_harley
    Joined: Jun 4, 2017
    Posts: 612

    lake_harley
    Member

    I've used both VHT and BBQ paint and it seems I have had better luck with the BBQ paint. Rust-o-leum brand as I recall. Seems to me it holds up better if only a light coat is used....just enough to put the color on the tubes (headers in my case). Anyone else have comments on light vs heavy coats when using high temp paint?

    Lynn
     
    6-bangertim likes this.
  18. Was just reading something the other day about using dry graphite spray instead of paint on exhaust manifolds. Looked really good in the pictures. Has anyone tried this? Any feedback would be great.
     
  19. kracker36
    Joined: Jan 21, 2012
    Posts: 754

    kracker36
    Member

    Here is an option.. I'll ceramic coat them for you for free if you pay shipping. Just for some advertising!
     
  20. lake_harley
    Joined: Jun 4, 2017
    Posts: 612

    lake_harley
    Member

    Dry graphite spray? Interesting. I'd be curious to know more. I ended up with about a pint can of dry graphite powder in a box of random things at an estate sale a few years ago. Maybe there's a use for it other than smoothing the operation of 1,000 or more locks?

    Lynn
     
  21. Rickybop
    Joined: May 23, 2008
    Posts: 5,653

    Rickybop
    Member
    from Michigan

    Aside from the type of paint used, when it comes to high temp applications, I've had the best results when using heat to cure the paint.

    The paint has to cure well on it's own before heat-curing.
    The heat-curing process should be done in stages...in increasing temperature heating cycles. Heat at a low temp and allow to cool, then a higher temp and cool, repeat.
     
  22. THIS GUY

    Try the ceramic

    Oldmics
     
    chevy57dude likes this.
  23. This is my POR15 paint 130-008.JPG 221-001.JPG .
     
  24. Dooley
    Joined: May 29, 2002
    Posts: 2,561

    Dooley
    Member
    from Buffalo NY

    what the heck kind of distributor is that????:D
    gorgeous motor
     
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  25. Thanks, that is a gutted points distributor used to prime the oil pump.
    2-6-006.JPG
     
  26. Dooley
    Joined: May 29, 2002
    Posts: 2,561

    Dooley
    Member
    from Buffalo NY

    I know I have one...making a lame joke about the drill on there....sorry carry on
     
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  27. classiccarjack
    Joined: Jun 30, 2009
    Posts: 1,422

    classiccarjack
    Member

    I have had success with the VHT SP998, but if not prepared correctly, it will fade or peel off. I have not tried BBQ paint, but seems viable.

    Sent from my XT1585 using The H.A.M.B. mobile app
     
  28. krusty40
    Joined: Jan 10, 2006
    Posts: 817

    krusty40
    ALLIANCE MEMBER

    I've never tried dry graphite spray paint on exhaust components, but I do have experience with it on suspension components. Our Winston Cup team suspension department used to put it on upper and lower control arms and spindles (uprights). It becomes a smeary mess when you get a little bit of solvent near it. Made for some grey days in the track garage.

    vic
     
  29. PeggySue
    Joined: Sep 5, 2016
    Posts: 241

    PeggySue
    Member

    Finally got her done. Seemed to work OK will see after running awhile
     

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  30. jimmy six
    Joined: Mar 21, 2006
    Posts: 4,547

    jimmy six
    ALLIANCE MEMBER

    How to make SBC look good... Put on Ford Y-Block look-a-like exhaust manifolds:rolleyes:
     

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