450 SL in Denmark

Natürlich

Daimler-Benz

Hi both,

Thanks to both of you for your patience and advice. I'll measure and adjust.
"DB"? - apologies if I'm being a bit slow here 

/Peter

Hi Peter,

I fully agree with Norbert. Ignition timing and its change over rpm and vacuum is something you should check well. I once had a 350 SLC of a friend and his igntion distributor timing would create the problems you describe now.

More than 600 mBar vacuum in idle is a good value.

Hi Peter,
did you check the ignition timing following the instruction given by DB and noticed by Volker before?
It is really important especially in the lower engine rev's range.

I don't remember you reported having checked this in full.


Regards
Norbert 

Hi there,

I have been looking at ignition timing and have arrived at these values after some adjusting.

Timing at idle: 5-6 degrees BTDC (a long way from spec of 5 degrees ATDC
1500 rpm: 12.5 degrees BTDC (within spec)
3000 rpm: 20 degrees BTDC (within spec)

That seems OK, although the static timing seems a bit too advanced. I later discovered that most likely my vacuum box on the distributor is not impacted by vaccum. The box itself holds vacuum so either there could be a fault in the change-over valve or a leak in the vacuum lines. Will check this tomorrow.

Anything to be worried about with the static timing? It has been raining heavily in DK so I haven’t had the chance to drive the car with the adjusted timing.

Best, Peter