This big 5.5 liter flat 6 is a modified Franklin O-335 aero engine that Tucker used in the Tucker 48 aka the Tucker T...

I added another rotor to the previous model, now it makes over 1900 ft-lbs of torque and over 900 hp. Its crazy, I al...

this engine is bone stock makes 130 HP and not a lot of torque

This is the engine I made this morning. 3 liters, 800 or more horsepower, I had to turn the sim frequency down to 600...

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

2L I4 engine with the i4 journal rod angles. Firing order 1&4-2&3. This thing is very responsive at RPM so you can re...

This thing revs to 16000 rpm and makes 800 HP it has the same firing order as a inline 5 but is a V10

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

one of the big V10s with a lightweight flywheel and sequential close ratio gearbox

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

makes a little less horse power than stock because of high miles

N/A 6.5L V12 used in the Lamborghini Aventador SVJ updated for version 0_1_12a, not entirely accurate anymore

[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...