Hi everyone, I got my '87 325is a month or so ago and after finishing painting my brothers car I now have the garage to myself to use. My plan at first is to build a turbo M20. having that said, I have a few questions.
I want to run somewhere near 300whp, but for the sake of argument, lets say I want to run 1 bar. (sounds cooler, doesn't it? ;) ) My main concern for this car is that I want it to be reliable. So reliable in fact that I could drive it to California from North Carolina and not have a turbo related issue. I will be running MS for management, i dont know how to size injectors, or fuel pumps, but i can figure that out later. Another problem I might have is with boost threshold. I want this car to be able to run on the interstate for hundreds of miles (like I said, to CA possibly.) without a problem. I need to find a turbo thats efficiency band and threshold match what im looking for. I dont want to be running much of any boost at highway speeds. If I did, i would just shift down and stomp the gas. Is it worth my time and money to swap in a S52 and call it a day or to keep the m20 at first and turbo? reliability is probably my main concern, and I want to make some pretty good power. I just need any advice that I can get at this point. I know enough terminology to be dangerous, but not enough to design my own system yet. Thanks! as a side note, my budget is probably somewhere around $4,000 accounting for about $1000 extra unknown expenses. I have my own shop, free access to my own lathe and mill (with proper experience) and other materials. Thanks everyone.
I want to run somewhere near 300whp, but for the sake of argument, lets say I want to run 1 bar. (sounds cooler, doesn't it? ;) ) My main concern for this car is that I want it to be reliable. So reliable in fact that I could drive it to California from North Carolina and not have a turbo related issue. I will be running MS for management, i dont know how to size injectors, or fuel pumps, but i can figure that out later. Another problem I might have is with boost threshold. I want this car to be able to run on the interstate for hundreds of miles (like I said, to CA possibly.) without a problem. I need to find a turbo thats efficiency band and threshold match what im looking for. I dont want to be running much of any boost at highway speeds. If I did, i would just shift down and stomp the gas. Is it worth my time and money to swap in a S52 and call it a day or to keep the m20 at first and turbo? reliability is probably my main concern, and I want to make some pretty good power. I just need any advice that I can get at this point. I know enough terminology to be dangerous, but not enough to design my own system yet. Thanks! as a side note, my budget is probably somewhere around $4,000 accounting for about $1000 extra unknown expenses. I have my own shop, free access to my own lathe and mill (with proper experience) and other materials. Thanks everyone.
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