I checked one of my spark plugs today. This is after my 130 mile round trip to the Detling show a couple of weeks back.
M20B28 Spark Plug by
marlinpeter, on Flickr
This is not a brilliant picture but I can confirm that the plug is a nice 'biscuit' coloured brown. It looks like the Alpina C27 chip is a good match for this conversion. Idle is a little bit high at 950 rpm so I might see if I get a similar chip with a lower idle.
I also got back today from the DVLA my updated V5 registration document with the new engine number and capacity updated. I had read horror stories about the DVLA being a PITA about such things and demanding inspection reports, etc. But luckily not in my case. I just sent them the receipt for the 325i engine and a short letter explaining that I had modified the engine to be 2793cc. Just over two weeks later, back came my new V5 - no questions asked
It probably helped that the nice man at BMW service gave me the reg. number of the donor car for the new engine.
If anyone else is thinking of swapping engines, make sure you get a receipt for the new engine including the engine number and donor car registration number.
Threaded Mode
