Why are the cam lobes all wrong in the directions? I mean on the ome bank, the exhaust and intake valves all open at the same time.

I couldn't figure that out either. I don't find it listed anywhere why. I ended up swapping around the cam lobes to match the other side. I appears to be operating correct with way it functions & the spark plug firing. It should have been noted someplace why the cam shaft was different on that side. The only thing I can figure is maybe they are trying to show the way 4 valves per cylinder operate (even though there are only 2).

What are the dimensions when built?

Height 8.5” Depth 8” Length 12”

What kind of tools are needed for assembly?

Generally all you will need is a small precision screwdriver. They send one in the package,however if you a set of precision stew drivers you're good to go.

Anyone know how to reach the vendor (Playz website just sends you to Amazon) I have a defective motor.

If you click on the product you ordered from Amazon you can choose actions and one is to message the actual product store and then you can write a message and Amazon passes it on. I just had to do that for a damaged product return.

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⚙️ Ignite your inner engineer with the ultimate V8 build experience!

DESK WORTHY DISPLAY - A sleek, educational centerpiece that sparks conversation and showcases your engineering passion.
MASTER THE MECHANICS - Build a fully functional V8 engine with 500+ realistic parts for hands-on STEM learning.
STEM FUN FOR ALL AGES - Designed for curious minds 8 and up, perfect for both kids and adults craving a challenging project.
NO BATTERIES NO LIMITS - Experience true mechanical power without the need for batteries—pure engineering in motion.
INTERACTIVE ENGINE ACTION - Watch pistons move, fans spin, and bulbs flash to mimic real combustion engine dynamics.

The Playz V8 Combustion Engine Model Kit features over 500 realistic parts that assemble into a fully functional V8 engine model. It operates mechanically without batteries, showcasing moving pistons, spinning cooling fans, and flashing bulbs to simulate real engine combustion. Ideal for STEM education, this kit engages kids and adults alike in hands-on learning about automotive engineering and mechanics.

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Number of Pieces	500
Batteries Required?	No
Batteries Included	No
Target Gender	Unisex
Manufacturer reference	v8engine
Package Dimensions	43.41 x 32 x 10.39 cm; 1.79 kg
ASIN	B07QCQNKG7

Playz V8 Combustion Engine Model Building Kit STEM Hobby Toy for Kids & Adults with DIY Guide & Realistic Parts Including Timing Belt, Cylinder Heads, Spark Plugs, Pistons, Ignition Wires, and More

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