
[Updated on 05 May 2023] This was among the largest piston engines ever successfully produced. Design began in early-...

[Updated on 02 May 2023] Napier’s unusual H-shaped engines were originally designed in 1928 with 16 air cooled cylind...

Hello, this is the first functioning engine I've made, would appreciate some feedback. Thanks!

597 cc. 2300 idle RPM. 3500 max RPM. For all your scooter needs. Gives roughly 20-30 HP. yes, sounds bad, but just im...

Sum imaginary I8 based on my xtx 660 engine.

Single cylinder from yamaha xtx 660 (supermoto) I tried my best to recreate this engine :D

[Updated on 02 May 2023] Frank B. Halford was a talented independent British engine designer of the early and mid-twe...

[Updated on 05 May 2023] The XR-7755-3 is the largest, most powerful reciprocating aircraft engine in the world. Duri...

[Updated on 05 May 2023] In 1939, the Air Corps identified a need for flat, H-type engines for installation in bomber...

All weights are accurate and the valve timing is as accurate as I could make it. The power and torque curves are fair...

i made this engine just because i want to replicate the $18,000 Exhaust of @effspot's Toyota century, so i made the ...

i made this engine just because i want to replicate the $18,000 Exhaust of @effspot's Toyota century, so i made the ...

[Updated on 02 May 2023] The first aircraft engine that reached 1000 HP, it was very heavy though. The main purpose w...

I don't know how I came up with this idea, or how you can put a massive engine like this on a R8, but it's awesome.