This started as an experiment on combining a Wankel crank and rotors with a normal reciprocating crank, conrods, pist...

I made this while trying to make an engine with counter-rotating crankshafts. I gave up after realizing that I couldn...

I made this today, its 83 cubic inches, 4 cylinders, uses the Hayabusa bore and stroke, and the crankshaft is about 3...

This thing is wacky 2 cylinders fire at the same time it sounds amazing and makes 850 HP at 15500 RPM this thing revs...

[Updated on 05 May 2023] The R-4360 was Pratt & Whitney's last aircraft piston engine, as well as the largest and the...

[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...

[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...

Updated, best sounding small V10

[Updated on 02 May 2023] 829 CI LS based V16. I don't know the real firing order, so I assumed two V8 with 45° offset...

[Updated on 02 May 2023] I tried to speculate on what a DB V10 might look and sound like if it was actually designed....

[Updated on 02 May 2023] Even back then it was considered as a "low-power" engine making around 240 HP at full power....

So I made this Silvertop 4a-ge which is the 4th gen of the 4a-ge engine, 20V with Working VVT active from 4400rpm, mo...