I have put a 1978 300sd motor into a 1979 300sd the 1978 uses 3 outlets for vacuum. I want to use the 79 pump with one big outlet. I wish to do this for several reasons one of which is the newer model pump was just rebuilt. The current old style pump is fairly corroded and it just is not a pretty or reliable set up. To do this I have to change the drive mechanism that is bolted onto the injection timer. My concern is that when I unbolt the plate from the injection timer, The two halves of the timer will move causing a realignment problem that will affect ip timing. The plate I have to change bolts across both halves of the injection timer the two halves are hooked to some springs that change the timing the faster it spins. Can I unbolt this plate and put new style plate on with out halving to be locked or realign some how I don’t have a manual that covers this
Issue
Thanks Dave S