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The 1950 BMW R25 features a 247cc single-cylinder engine with a square 68 mm bore and 68 mm stroke. Utilizing an over...

Based on Hugh's HandBuilt specs, this configuration models a modified 1970-83 Yamaha XS650 with a 750cc big bore kit,...

biblically accurate circle levels of performance

I tuned the exhaust to make it sound similar to a G80 M3. Power figures are close, with torque being a bit down. Code...

pretty cool 2cyl per bank layout

if you thought the mewl engines were wild then you'd be surprised about the origins of this one's lore. Anselmo basi...

takes a few tries revs up too 6k first of its kind

with the first generation of Meowl's PR series engines

Carship hybrid. Part car, part ship. when the boost psi go 2100 or more (view psi on air scfm gauge), rocket powerd ...

This is Engine #1 revised to be even more realistic. It is the same engine as before but with consistant timing for s...

A naturally aspirated 38.2L diesel V12 derived from Kharkiv V-2 engine family, produced by Kharkov Locomotive Factory...

i made a lays

This engine is a massively undersquare V14 with an abnormal angle I made using AMMC 7.0. Credit to CagliostroFriedChi...

This engine is massively oversquare, emulates 5 Valves per cylinder thanks to AMMC, takes a snippet of code from Cagl...

if your wondering why its a rotary its use case was on the hub of a bike wheel like many electric bike motors today i...

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