I was looking at the recent maximum psi s54 dyno and had an idea. Could we fit turbo manifolds for other bmws on our cars? I understand that you would have to reflange the manifold but thats much cheaper than a custom manifold especially if you can weld. I found measurements of the s54 motor and on the exhaust side the center to center bore is 91mm which happens to match up with the measurements found here http://roycormier.net/cad-downloads/. I believe this 91mm number is common with multiple bmw motors including M50, S52, S50, M52tu, and M54 possibly even more. This could potentially mean buying cheap manifolds made for old bmws reflanging them and having a perfectly good manifold for sub 1k. Does anyone have ideas on a specific maniold that could work? Id be willing to buy one considering most old bmw manifolds can be found for cheap.
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