OK ..... I have had a Crane Cams XR3000 installed in my 230SL for a couple of years and had been happy with it. Recently I had a miss that I tried everything to track down, including swapping coils, plugs, alternator, checked fuel pump etc. It seemed voltage related as I could turn on my lights and make the missing worse. It also appeared that I had a high electrical load somewhere in the system. I used a digital voltmeter to understand more of what was happening. If the voltage was above 12.5 volts, everything ran fine. With the lights on, even at speed, the voltage would drop to 11.8 and it would miss on acceleration. At the Northern Virginia Gathering this weekend, I tried swapping regulators with no change.
The solution was to replace my XR3000 unit with my old points and condenser.
Has anyone else had difficulty with this unit or the XR700? Mine used the red Bosch coil with the ballast resistor bypassed. Does anyone have experience with the Pertronix points unit? Do you need to modify the distributor to install the Pertronix?
I want to go back to electronic ignition but I want to make sure that it is a reliable unit.
Jim Villers
Jim Villers
190SL, 230SL 5-Speed, 190E 2.3-16 Kompressor