Reply to thread

Message: [QUOTE="TARM, post: 95750, member: 578"] Again this is just from things as I understand them from what I have learned from others. You have to look where you are going to be hitting within the map ranges. You can not just put together a smaller this or larger that because you think you do not or do need more or less. It has to be to a degree balanced. Your manifold has to be sized to what you would tend to choose if you were running a single with your main goal of fat spool up. You then need to match your atmosphere based on where you want to run inside that map. Ideally you want to stay relatively in the middle of the range as that gives you the broadest range. You are looking to his say between 55-75psi range not that it means much in and of itself. If you check out what ranges are seen from Charles 38/47 combo and others with similar sized setups it works very well as a do all and tow setup. You control the boost and power by adjusting your gates. By doing what I was saying with the 4288 you are effectively turning it into a 38R size comp with a bit larger turbine side of what you are handling via smaller turbine housing. Its cheap, configurable, fully rebuildable, and very easy to sell off what you have and you have into it if you choose to grow into a full custom setup. Understand when looking at smaller atmosphere turbos you are never pushing in more air than what that turbo is flowing. You are simply adding to the bottom end and under the peak curve of it. That is maxing it out as well. Do you want to be maxing your system out where you are dealing with less efficiency or do you want to pick your turbos based on what they do in that broad middle map area. The limits for the turbos of going to big on one is that you will fall off the left side of the map which you of course do not want. But you at the same time do not want to be way off the right and jacked up to the max PR either, not to mention shaft rpm. [/QUOTE]