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

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...

While making the DeTomaso inspired thing, I thought the cam angle on it would go hard on a race car, so I enlarged th...

Something inspired by the DeTomaso Pantera except it's got an SBC instead of a Ford motor, idk.

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...

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

i will say that sixth is 0.13 soo could make up for 700 MPH

The two stroke edition of my Napier Deltic. Someone made an 18-piston 2-stroke version of my Deltic (so credit to the...

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

i have improved the gearbox timing rpm limit etc and now its capable of 62 mph

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.