[CHJNCSU]

Dry sump pumps have one pressure section and the rest are scavenge sections. While it takes more power to run more stections, it is unlikely to cause "more stress on the engine". pumps are low power consumers (~5 bhp to 10 bhp). The additional sections are used to scavenge or recover oil from the engine. Generally this is from the pan but can also be turbo(s) or lifter valley. Additional scavenge sections will generate greater vacuum in the sump. This means engine seals must be set up for negative sump pressure. Vacuum in the sump can be a big help to ring seal. Usually the engine builder picks the pump as they are responsible for the engine. More sections is more cost and plumbing. The tank is important as well. It is important that the oil pick up in the tank never becomes uncovered in high G. It also separates the vapor or gases for the oil. Again working with the engine builder is a good idea. Look to BMRS for plumbing if you need a source. Good luck with your project!