somebody decided to make a 156cc go 100k rpm... so I MULTIPLIED THE CYLINDERS BY EIGHT!!! (original credit to nnnn - ...

idk how this works but the code is solid tbf built from the ltrsp port rotary

you were the chosen one mazda but you had too throw it all away too turn your engines in to pgev's (credit is litro ...

i know alot of people will say v6s are already crossplane well now its as crossplane as the triumph but hondafied as ...

While making the Shadow Mk1 inspired thing, a question came to my mind: What if, in an alternate timeline, the 19...

You think this is over? At some point, it will reach 100K (if you're lucky). edit: use E, it's better than R becaus...

The Briggs & Stratton World Formula is a high-performance 204cc, 4-stroke racing kart engine designed for competitive...

the unusual 7 cylinder engine with an approximately 100 degree angle. sounds like an inline 7 and an inline 6 together.

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,...

I took Greg's Rhinotech 250cc 2 stroke single, lowered the idle speed, gave it a 16k rev limit and slapped it into a ...

its now a pentagram not star of david

yes it even fires now ery noice

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

this engine turned out pretty well 70hp 250cc 2 stroke