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WORKING ENGINE MODELS · METAL DIY KITS

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358PCS Flapping-Wing Mechanical Phoenix Metal Kit

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358PCS Flapping-Wing Mechanical Phoenix Metal Kit

358PCS Flapping-Wing Mechanical Phoenix Metal Kit is a 358-piece stainless-steel phoenix sculpture whose visible transmission structure lets the build..

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$68.59 $140.61

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506PCS Full-Metal Mechanical Leopard Model Kit

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506PCS Full-Metal Mechanical Leopard Model Kit

506PCS Full-Metal Mechanical Leopard Model Kit is a 506-piece 304 stainless-steel leopard sculpture with articulated limbs and tail, layered mechanica..

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$88.19 $180.79

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2500PCS+ 55cm Mechanical T-Rex Metal Kit

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2500PCS+ 55cm Mechanical T-Rex Metal Kit

2500PCS+ 55cm Mechanical T-Rex Metal Kit is a large 55cm, 3kg mechanical Tyrannosaurus sculpture with more than 2,500 metal parts and multiple poseabl..

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$489.99 $1,004.48

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500PCS Illuminated Aerospace Rabbit Metal Kit

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500PCS Illuminated Aerospace Rabbit Metal Kit

500PCS Illuminated Aerospace Rabbit Metal Kit is a 500-piece stainless-steel and alloy rabbit sculpture combining astronaut-inspired detailing, integr..

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$78.39 $160.70

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Functional Nacelle Thrust Reverser Turbofan Model

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Functional Nacelle Thrust Reverser Turbofan Model

Functional Nacelle Thrust Reverser Turbofan Model is a 42cm ready-built PLA turbofan display with motorized fan blades, a manually controlled nacelle ..

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$264.59 $542.41

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Built for people who want to know how machines work

Engineering detail, presented with collector-grade clarity.

Every collection is organized by mechanism and operating method, so you can compare assembly complexity, material, scale, power source and display purpose without guessing. EnginesDIY is designed to help builders choose confidently—not simply browse more products.

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Shop working engine models by type

Compare visible mechanisms, assembly formats and operating styles—from compact Stirling demonstrations to multi-cylinder combustion and aviation-inspired builds.

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Model Engine Kits

Detailed metal builds with visible moving parts for makers, collectors and engineering enthusiasts.

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Working internal combustion engine model with visible cylinders

Working power

Internal Combustion Models

Piston-engine models organized by cylinder layout, operating format and mechanical detail.

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Steam power

Steam Engine Models

Classic steam mechanisms for operation, learning and display.

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Flying bird single-cylinder Stirling engine model

Heat driven

Stirling Engine Kits

External-combustion demonstrations that turn heat into visible motion.

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Aviation

Turbofan & Jet Engine Kits

Compressor, turbine and aircraft-engine structures shown in precision detail.

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Hit and miss engine model with exposed flywheel

Heritage mechanics

Hit & Miss Engines

Collectible stationary mechanisms with exposed flywheels and governors.

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Five-cylinder radial aircraft engine model kit

Radial layout

Radial Engine Kits

Aircraft-inspired radial mechanisms built around a visible central crank.

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Twin cylinder

Motorcycle & V-Twin Engines

V-twin, boxer-twin and compact two-cylinder working models.

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Inline four-cylinder DOHC working engine model

Multi-cylinder

Inline Engine Models

Inline-two and inline-four layouts with DOHC, OHV and flathead designs.

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Working tractor-style stationary engine model

Stationary power

Tractor & Stationary Engines

Heritage powerplants with visible flywheels, governors and utility-engine form.

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What are people saying about us

Arrived early, packaged perfectly, beautiful model and a very well received gift for my car enthusiast OH he is over the moon with it

- charlibaltimore

This is the 8th model I have built from this company, and once again I'm completely satisfied. It is beautiful and the workmanship is wonderful, I highly recommend it.

- chromebandit

Have build many of these, and for a plastic model, this is one of the best. All parts were included and assembled model runs perfectly. For the price, can't be beat.

- kellyhorne

Very well made and detailed. Instructions were a little to non understandable but made out. Surprised all the parts where there, only the switch hold down but was missing

- TBNWorld

I was looking for something challenging and I didn't want to be able to finish it in a day or two. This was perfect. I worked on it a little here and a little there and it took a few weeks to finish and that was exactly what I wanted this to be.

- sacredcirclegifts

High quality, great instructions and fun to build. It took me a little onger than spec'd but i would not have minded it being even longer. This is my first model. I hope there are comparable projects like this.

- thewiltingwick

Love the V8. I ran in a small issue and contacted consumer services. Very responsive and I am completely satisfied. Looking forward to my next purchase.

- DocDisco81

Bought as a gift for an older gentleman and he loved it..all metal pieces and so easy to put together..the instruction manual was easy to read. Just wish there was more like this.

- janmakuc

Very much fun to build. All metal parts fit precise and the manual has for each building step easy to understand drawings and descriptions. The model engine looks great and also works well.

- graigkarl

It was a present for my brother who graduated in mechanical engineering! He simple loved! It was perfect!

- lloydstoltz

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