Paint engine blocks, covers and hot brackets

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Guide to painting engine blocks, covers and hot brackets

Paint engine blocks, covers and hot brackets needs a clean metal surface, controlled sanding and a coating that is actually made for heat. Engine parts need heat resistant coating only on suitable external metal surfaces, while gasket faces, machined areas and service openings must remain clean. This guide focuses on Mipa silicone remover, MP Hand Block Soft and Mipatherm formats for a practical high temperature finish.

What do you need to paint engine blocks, covers and hot brackets?

Cleaning and degreasing

Mipa silicone remover in liquid form and Mipa silicone remover spray remove grease, oil, wax and silicone contamination from engine blocks, covers and hot brackets before sanding or coating work starts.

Hand sanding control

MP Hand Block Soft 128 x 63 mm helps key curved and shaped metal areas so the abrasive follows the part without creating harsh flat spots.

Mipatherm high heat coating

Mipatherm is a silicone resin based high heat coating for steel surfaces that need a black or silver finish with heat resistance up to 800 °C.

Mipatherm Spray aerosol

Mipatherm Spray 400 ml gives the same high heat direction in a convenient aerosol for smaller parts, edges and local work where spray gun preparation is unnecessary.

How to paint engine blocks, covers and hot brackets

  1. 1
    Remove loose contamination

    Let engine blocks, covers and hot brackets cool completely, then remove loose rust, soot, flaking paint and road dirt before solvent cleaning begins.

  2. 2
    Degrease before sanding

    Use Mipa silicone remover or the aerosol cleaner to lift oily residue so sanding does not rub contamination deeper into the surface.

  3. 3
    Sand to a stable metal surface

    Use the soft hand block on accessible flat and curved areas, then clean again so abrasive residue and oily fingerprints are removed before coating.

  4. 4
    Apply the heat resistant coating

    Use thin, even coats of Mipatherm or Mipatherm Spray and keep the film controlled rather than heavy. The coating is ready to use and does not need hardener.

  5. 5
    Respect drying and heat exposure

    Allow the coating to dry as directed before the part returns to heat. Gradual first heat exposure is safer than forcing a freshly coated part straight into severe service.

Which engine heat coating format should you choose?

Use liquid Mipatherm for larger parts

Choose the 750 ml, 4 l or 20 l Mipatherm format when engine blocks, covers and hot brackets can be coated with spray equipment or another suitable professional application method.

Use Mipatherm Spray for small parts

Choose the 400 ml aerosol for local repairs, edges, small shields and parts where setting up spray equipment would slow the job down.

Choose black or silver by appearance

Black gives a matt technical finish, while silver suits visible heat parts where a metallic service finish looks more natural.

Technical details

  • Mipatherm is intended for steel substrates such as exhaust systems, ovens and barbecue grills, with heat resistance up to 800 °C.
  • Mipatherm Spray is specified for iron and steel and should be pre-cleaned with Mipa silicone remover before coating.
  • The liquid Mipatherm technical sheet lists black and silver, a spreading rate of 9.0 to 12.0 m²/l and a controlled dry film thickness of 15 to 20 μm.
  • High heat coatings should only be applied to stable, clean and dry metal surfaces, because oil, soot or loose corrosion can shorten service life.
Practical suggestion

Keep paint away from gasket faces, threaded holes, electrical contacts and moving interfaces. The best finish starts with patient masking before the first coat is sprayed.

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