For those of you running the 2.5 or 2.8 M52TU motors, who has upgraded camshafts? The Shrick 248s are the obvious no fuss, if not pricey, upgrade. What about ZHP e46 cams? Are these a direct fit or would I need new valve springs or even a new head? The answers I'm seeing on forums aren't giving me a consensus.
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UK forum for general and technical discussion about the Z3 roadster
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