Daimler-Benz DB 604 - Wikipedia, the free encyclopedia Historically the DB604 was a back up to the Jumo 222 engine which never was able to fully function, which meant that the Daimler engine did not get favorable funding or backing from the Luftwaffe. Apparently it had more promise than the Jumo, but was not advanced past the experimental stage in 1939 and let to linger until being officially cancelled in late 1942. So what if it had been favored and unlike the Jumo 222 actually worked by 1942? What would it have been able to power and what could it have meant for the Ju288 or 388? How about the Do 217? Or the He177??? The enormous power would have even given German nightfighters the ability to catch up to the Mosquito, as apparently the Ju288A with the equivalent Jumo 222 could reach 417mph with 3 tons of bombs. It seems the dimensions, if similar to the Jumo 222, would have made it a viable engine for the Fw190/Ta152 too.