Here at Magnus we often get asked “What is an alternative for a Dry Sump?” or “What is a less expensive option?” We understand that a dry sump kit is not exactly inexpensive, but who ever said that building a race car was going to be? What most don’t understand is that not only is it an insurance policy to protect your engine and extend it’s life, but it allows your car to achieve a higher level of performance that the stock oiling system cannot offer. We have been there with our customers and have to tried to develop other alternatives but in the end the results have shown us that dry sump is an absolute necessity. The initial investment will soon be forgotten after you’ve realized the performance advantages and longevity increase in your engine program.
Dry sump oiling systems are far from new technology. They have been in use for decades and first originated to help against oil starvation in aircraft which flew inverted (upside down). Increasing vehicle G force levels, coupled with increasing crankcase pressures, it becomes apparent that OEM oil systems are not be able to provide adequate oil supply and oil evacuation. As an engine develops more power, it will require more oil pressure, more flow, and greater oil capacity. All of these issues are addressed with a dry sump oiling system. The basic dry sump
assembly utilizes multiple oil pumps staged together to scavenge (i.e. vacuum / evacuate) all oil from the engine and return it to an external reservoir which will be kept full of oil under all operating conditions. A pressure stage exists in the pump which will draw from the external oil reservoir and feed it to the engine. This type of oil system ensures the engine always receives a sufficient oil supply and starvation never exists. The large reservoir of oil also helps to de-aerate the oil (i.e. remove tiny bubbles which accumulate in a running motor). The increased oil capacity aids in keeping the oil at lower temperatures as well. When a dry sump equipped engine is running at full power, the only oil in the crankcase is droplets of oil that are being shed from the crankshaft and camshaft bearing areas. The engine is always “dry” and never rotating through any of its own oil like a wet sump system.
Be aware that there is no alternative to a dry sump system. Other oil system variations claiming to be sufficient are merely band-aid solutions. In order to maintain a reliable racing engine program, engines must always feature a consistent, direct supply of engine oil.