Petrol engines 2.1 Timing

From VW-Tech

5 BTDC degrees for unleaded on a DJ and disconnect the vacuum advance and retard and block hoses to time.

HarryMann said.. Valve seats are hardened but CR is high at 10.5:1 so it's just a matter of Octane rating and pinking/detonation. Dropping the static advance back about 5 degrees will just reduce performance a bit, but engine will run fine!

TooManyToys said... If 98 is available then use that with the ignition timing at 10 degrees BTDC If only 95 available you need to set the timing to 5 degrees BTDC (or damage the engine) If there is only 91 unleaded, then you are in trouble.. I dont think the DJ will happily run on that even with timing set to 0 deg ....