The weekend was spent doing some engine work which I have loaded into the performance how to section here:
A couple of people who know I have done this once already and planned to do it again on the 250 Cal, asked me to write up a how-to. So here it is: First Question Why bother? The M52TUB28 was artificially restricted in it's breathing ability by BMW. Why? Well, rumours abound: The 2.8 had to...
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This is an inlet manifold swap from M52TUB28 to M54B30 with a change of ECU, removing the PCV breather system and adding an Oil Catch can.
I needed to get this done before mounting the front clam section as, once it is on, I do not really want to take it off again. Access to the engine bay is great with no Z3 wings, lights etc. Not so much to get in the way and swear at!
I did also do a little bit of sorting on the bodywork, mostly measuring and marking up where attention is needed. Petrol flap went in OK.