1973 450SL, (Previous 2008 ML350,2002 E320 Wagon, 2000 SLK230)
This has been driving me crazy in the past year - year and a half and here's what I or my indie have replaced so far - plugs, wires, cap rotor, plugs again, insufficient hose to the AAV (thank you group for identifying the URO vs OEM differences), and timing, I've recently ordered a new Bosch coil as it appears to be original and I have 98,000 miles on the car in case it has degraded with time and heat exposure over almost 50 years. My only other consideration was to try a Pertronix 91885. I was wondering if I had to do anything with the trigger points whether leave as is, disconnect, or what part they played if I did a Pertronix conversion. I appreciate any input.