re: M535i timing

[John G.Burns <john@xxxxxxxxxxxxxxxxxxxx>]

>I am thinking of an unleaded conversion for my '86 M535i as leaded fuel is
>on it's way out in the UK. I have been told that it would also be necessary
>to advance the timing to cope with the change in octane rating.

>Can anyone advise me on how to advance the timing.

Your car has Motronic 1.x. There is a fuel quality switch on
the inside of the Motronic control unit (next to the
steering column) with 8 possible settings. I think this is
what you want.

Check out http://www.bonnevillemotorwerks.com/ for Jim C's page.

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