Can You Powder Coat An Engine Block | All Facts Explained

Since engine blocks are made of aluminium and cast iron, these materials are prone to rust and corrosion. There are many ways to protect your engine block from corrosion and rust, such as paint coating, galvanization, powder coating, etc.

Powder coating is the most effective way to do it. So can you powder coat an engine block? Yes, you can powder coat your engine block. It is abrasion and corrosion resistant, a good insulator, and has a high-temperature tolerance.

However, you can also safely powder coat car’s wheels and other parts such as bike heads, camshafts, and intake manifolds with models ranging from motorcycles and cars to aircraft engines.

Can You Powder Coat An Engine Block?

Powder coating is a process based on electrostatically charged particles of metal and pigment being sprayed onto a surface and heated until they fuse. This makes it an effective way to coat metal and other surfaces that can withstand high temperatures.

Powder coating is extremely versatile. It is used in various industrial applications and car parts to prevent corrosion and improve appearance. You can also use it on the engine block to protect the metal surface from scratches and abrasion.

When powder coating an engine block, there are a few things to remember. First, the block must be completely smooth, so the paint doesn’t get trapped between the metal and the surface.

Second, you must use a durable base coat for long-lasting service. Third, remove any old paint, oil, or grease from the engine you coat.

How Much Does It Cost To Powder Coat An Engine Block?

The powder coating cost depends on the engine block’s size and volume. For example, a four sq ft engine block costs more than one that is two sq ft. However, a standard size 8-cylinder block weighing 750lbs would cost $400 to $1,000 at a local shop.

Powder coating cost for different car parts:

Parts nameCost
Oil cap$5.00
Dust cover$10.00
Coil bracket$5.00-$10.00
Timing chain cover$25.00
Bell housings$45.00
Valve covers big block$55
Tube chassis$600
Automobile & subframes $325
Valve covers small block$40
Vehicle frame$600
Read end housing $200

Cost for coating motorcycle parts:

Parts nameCost
Air cleaner front$30
Battery base$25
Air cleaner back$25
Horn cover$25
Frame sport bike$300
Handle bars$50
Kick stand$20
Sissy bar$40-$60
Primary cover$65

How Long Does Powder Coating Last In Engine Block?

Powder coatings can last up to 20 years (average) or more. They won’t chip, peel, or show rust. However, life expectancy depends on the type of coating you use.


These coatings are resistant to UV light, solvents, and abrasives. They don’t fade over time. It can withstand temperatures as low as 100 degrees Celsius and as high as 160 degrees Celsius. This coating can last for over 25 years.


They can resist heat up to 150 degrees Celsius. This leaves your engine block looking as good as new for 20 years to a lifetime.


This coating lasts for 15 years or more. Fluoropolymer powder coatings work like epoxy powder coatings. They resist water and solvents, but not as well as epoxy.


Urethane powder coatings are abrasion-resistant. They don’t fade and can last for 10 years.

A competent powercoat increases the thickness of the coating, which in turn reflects heat to the engine block and away from critical components. This means a power coat can increase the lifespan of your engine.

Is Powder Coating Better Than Painting In Engine Block?

When it comes to the engine block, some may think that painting the block is better because it’s cheaper. Others believe that powder coating costs more. The coating is indeed costly, but it is better than regular paint.

First, we should understand the difference between painting and powder coating. Painting is commonly used on surfaces like walls and vehicles. It’s easy to apply and low cost. These advantages make painting more popular than powder coating.

Powder coating is applied to cover a surface with an electrostatic gun. It is used for all the parts that are not easy to paint. Powder-coating is more expensive than painting. It’s pretty tough to apply.

However, there should be no doubt that powder coating is better than painting. Because its long-lasting, heat liable, abrasion-resistant, and thicker than regular painting.

Can Engine Block’s Powder Coat Be Warped in High Temperatures?

Yes, it is possible for the powder coat on an engine block to warp when exposed to high temperatures. However, this is not a common problem and it is more likely that your engine will warp than the powder coat.

In order for the powder coat to warp, it must be heated up significantly above its melting point and then cooled down quickly. This can happen if the engine is overheating due to a lack of proper cooling or if the car is parked in direct sunlight with the hood up. Even then, it is unlikely that you would notice any warping because there are usually other problems with your engine before this happens (such as overheating).

If your engine block has been exposed to extreme heat conditions as described above, there may be some minor warping of the paint but this should not affect its performance at all. If your engine has been overheated due to improper cooling or parking conditions, then you should have a look at it because there could be other damage which needs fixing first.

Is Powder Coating Worth The Money For Engine Block?

Engine blocks are the foundation of your car. Coated with powder gives them a durable finish that can resist corrosion. Covering your engine block with powder can be costly, but it has many benefits.

Benefits of powder coating:

  • Powder coating provides a completely sealed surface, which is lacking in most paint jobs
  • It is more durable than paint
  • The powder coating lasts much longer than other coatings
  • They are easy to recycle non-flammable material
  • Excellent heat resistance 195-220 degrees Celsius
  • Can protect against salt water, oil, mud, and other harsh chemicals

What Cannot be powder coated?

Metals that are thinner than 0.1 inches thick can not be coated. Although powder coating can be used on various non-metallic materials, it is not always the best solution. This is because the high temperatures and pressures used in the process can cause damage and wear to the material.

The following surfaces cannot be powder coated:

  • Rough or textured surfaces
  • Plastic components
  • Opaque objects like fenders and headlights
  • Steel brake linings, axles, and springs that are not zinc plated or galvanized
  • Glass-filled plastics

Does powder coating weaken metal?

Powder coating does not weaken the metal. It helps to prevent rust, abrasion, and corrosion. Powder coating is a durable finish that is applied to a variety of metals, including steel.

However, if you coat a thin metal less than 0.1 inches thick, there is the possibility that the metal will weaken. Because the heat generated during powder coating is very high, if the metal is less than 0.1 inches thick, you risk having the metal bend or warp because of the heat.


Engine blocks can be prime targets for rust and corrosion. Moisture can cause a lot of damage to engine blocks. However, you can protect your engine blocks against rust and corrosion by coating them. Powder coating is an excellent way to coat your engine blocks.

So what did you think? Can you powder coat an engine block? Of course, you can. Powder coating protects your engine and gives a long-lasting finish. It is costlier, but the benefits outweigh the cost. A good powder coat can last up to 20 years.

Related Posts For You

How To Clean Powder Coated Wheels & Make Them Shiny

Can You Powder Coat Chrome Wheels

Leave a Comment