Hey guys, today I'm assembling & running a miniature (17.5 cc) OHV engine. With adjustable timing, a proper cooling system, lubrication system and multi ring pistons, this tiny engine is as close as it gets to the real thing.
Turn on captions to follow along with the build.

Engine specs:
Displacement: 17.5 cc
Output: 2.5 hp
RPM range: 1,500 8,000 RPM
Fuel type: gasoline (min. 92 octane)
Weight: 1.3 kg (46 oz)

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