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...

im not gonna keep posting this here just for proof of concept challange is on boys

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

So its a challenge you want Cookiedaboi? Well I'll give you one. hehe see if you can beat this!

they say theres no such thing as too much rpm maybe fourty five thousand is enough made on purpose too challenge rhin...

Burt Munro spent 50 years turning a 1920 Indian Scout into a world-record streamliner. He hand-cast pistons with a bl...

i dont know how i made this work but it does

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

An absurdly large V18 producing absurd horsepower per liter. The template for this was created by me.

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 ...

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

hits 12k rpm and the pistons are on the verge of sliding out

This is again another very unseen design on here made it pretty easily though

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