I fear the new turbo update may have broken early year engines (pre-1955). I find it impossible to create an engine that doesn’t exceed the torque limits without setting Compression, Fuel Mixture, and Ignition Timing to the bare minimum. I tried I4, I6, and V8s of different sizes. They’re all in the same boat. I haven’t found any other settings that work. Before the turbo update I was able to make an interesting variety of these early engines. Some other recent posts have mentioned that torque values are too high, so I guess this falls into that general line of thought.
I’ve noticed this too. I find it very difficult to get an i4 past 100 ft.lbs without it warning me the engine is breaking in 1946. I find it odd because if you look at even older cars like a 1925 Ford model A, the i4 will give you 128 ft. lbs at around 1000RPM and that was 21 years before the engine I was buidling.
Any thoughts from the Devs?
Lots of thoughts, all channeled into appropriate changes. All the stats have been revamped to give more choices and more viable options.
- Rebalancing of all conrods and pistons… some stats didn’t make much sense or didn’t leave much choice. I tried to make all choices more viable depending on application.
- Addition of heavy duty cast pistons… very low revs, but high torque, needs no forge.
I’ll do a video update on those changes I think, but they won’t come for the current demo yet, probably along with the car designer demo. 
Cheers!
Thanks! Looking forward to it!