12'000 RPMs

[St.Coiled]

so ive been trying to push that sweet RPM limit of 12k RPMs but everytime i tried doing it its either the Piston, Conrod or the Crank that has too much Stress put onto them which blocks me from reaching that limit. ive read articles on bore/lower stroke put ive yet to figure out what or where to actually change that. (im from switzerland so my english understanding is very limited) any help is appreciated and thanks in advance

[Admiral Obvious]

At the moment, it's not possible to hit 12k without float or something breaking first. The next patch should allow you to peak power near 12k if you want, but I don't think it will be any more viable than it currently is.

[Kirby]

i've had one engine that revved to 12k i don't remember it being stressed at all, it was garbage tho.

[Evan]

Originally posted by miata:

so ive been trying to push that sweet RPM limit of 12k RPMs but everytime i tried doing it its either the Piston, Conrod or the Crank that has too much Stress put onto them which blocks me from reaching that limit. ive read articles on bore/lower stroke put ive yet to figure out what or where to actually change that. (im from switzerland so my english understanding is very limited) any help is appreciated and thanks in advance

When creating your engine family, give it a shorter stroke. Shorter stroke will allow your piston to spin at higher rpms. If this is not enough, in the bottom end section you can also decrease the stroke of that engine variant. Increase the strength of the pistons and select some stronger pistons that will endure higher rpm.

Once the pistons can safely reach 12k rpm, you will need to worry about valve float probably.

DOHC with 5 valves per cylinder with the largest camshaft you can have will help limit valve float. If this is not enough, increase the quality of the valvetrain by going to the valvetrain section and increase the slider on the right. Note, by doing this the engine can get very expensive very quickly.

Originally posted by Admiral Obvious:

At the moment, it's not possible to hit 12k without float or something breaking first. The next patch should allow you to peak power near 12k if you want, but I don't think it will be any more viable than it currently is.

I messed around with it and hit peak power @10k or so iirc, but that was with boost.

Originally posted by Kirby:

i've had one engine that revved to 12k i don't remember it being stressed at all, it was garbage tho.

I agree I got bored of it when I made my 12k rpm engine - the engine was completely dead below like 6k rpm.