Model Engine Kits, Working Engine Models & DIY Mechanical Kits

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WORKING ENGINE MODELS · METAL DIY KITS
Build a real engine. Watch it run.

Shop working V8, Stirling, steam and turbofan model kits—precision metal builds for makers, collectors and engineering enthusiasts.

Working mechanisms Precision metal construction Worldwide tracked delivery

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V8 & MULTI-CYLINDER
Internal Combustion Engine Models
BUILD YOUR OWN
Metal Engine Model Kits
TWIN-CYLINDER
Motorcycle Engine Models
Stock: In Stock Brand: CISON
CISON LS-52 52cc V8 engine model: quick decision guideQuick answer: CISON LS-52 52cc 1:5 Water-Cooled V8 Engine Model should be compared as a true min..
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$2,449.99 $5,022.48
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CISON V8-440 44cc 1:6 OHV Gasoline Engine
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Stock: In Stock
CISON V8-440 44cc 1:6 OHV Gasoline Engine is a 44cc 1:6 water-cooled OHV small-block V8 gasoline engine for expert builders and bench or compatible RC..
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$2,057.99 $4,218.88
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Stock: In Stock
ENJOMOR GS-V8 Pro 78cc DOHC V8 Gasoline Engine is a finished 78cc V-shaped eight-cylinder gasoline engine with a supplier-published 32-valve DOHC layo..
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$2,841.99 $5,826.08
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Stock: In Stock Brand: TECHING
TECHING 1:3 V8 engine model kit: quick decision guideQuick answer: TECHING 1:3 Full-Metal V8 Engine Model Kit 500+PCS should be compared as a multi-cy..
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$685.99 $1,399.99
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Stock: In Stock Brand: TOYAN
TOYAN FS-L400BGC 14CC Inline Four-Cylinder Gasoline Engine: Quick AnswerTOYAN FS-L400BGC 14CC Inline Four-Cylinder Gasoline Engine is a miniature inte..
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$636.99 $1,273.98
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4 Cylinder Car Engine Assembly Model Gift for CollectionThis four-cylinder engine kit packed with a metal box. So people has to assemble the parts and..
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$460.59 $951.02
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Stock: In Stock
Smithsonian Motor Works Transparent 4-Cylinder Engine Kit: Quick AnswerSmithsonian Motor Works Transparent 4-Cylinder Engine Kit is a visible mechanis..
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$78.39 $160.70
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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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Compare visible mechanisms, assembly formats and operating styles—from compact Stirling demonstrations to multi-cylinder combustion and aviation-inspired builds.

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Quick answer: Set a model steam boiler's water level only by its own maker's instructions, with the boiler fully cold and depressurized. Before hea..
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Quick answer: If a nitro RC engine suddenly becomes very hard or impossible to turn after priming, stop the starter immediately. Do not pull harder..
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Quick answer: Do not judge a used nitro RC car by whether the engine starts during a seller's demonstration. First identify the exact model and eng..
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Quick answer: Old nitro fuel does not become harmful on a fixed birthday. A tightly capped original can kept cool, dry and away from heat may remai..
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Quick answer: Some glow engines can operate on fuel containing 0% nitromethane, but that does not make zero-nitro fuel a drop-in choice for every n..
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Quick answer: Diagnose a suspected nitro RC engine air leak by separating three systems: throttle control, tank/exhaust pressure, and the engine's int..
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Quick answer: A nitro RC engine should sit on clean, flat, compatible mounting surfaces without being pulled into position by its screws. Dry-fit t..
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Quick answer: Set a nitro RC throttle/brake linkage from the mechanics outward. With the radio on and trims neutral, the carburetor must sit at the e..