Semi-compact, space-efficient boiler engine, utilizing 4 boilers to generate 583.5k SU @ 64rpm.
NOTICE: The schematic does not place the liquids. You will have to do that manually. The lava chamber is directly below the blaze burners and can be accessed for crawling around in and filling by tunneling through the side. Fire resistance mandatory for filling it; some sort of lava vision highly encouraged.