PerTronix Electronic Ignition

[Ronald]

Thanks for all of the suggestions. I will try them all.

I will check the wiring for proper connections and being wired correctly. I will check for slop in the distributor. If that does not work I will try the resistor.

On the schematic that zcar70 supplied it shows a speed adjustment. It that the recessed black slotted item just to the left of high center on the back of the tach? I have two tachs. One is over 200 rpms off and the other, just supposedly completely rebuilt, is 600 rpms off. Will that speed adjustment adjust the rpm reading on the tach?

I have a 280Z block, 280Z five speed, and a 280Z rear end in my 240Z. I know that in theory that should not create a problem with the tach. However, the car gets up to 6,500 rpm a lot faster than with the smaller block and the standard point distributor. Could the old tach just not be able to take it?

Thanks again for all of the help. I have some other nagging problems that I will bring up once I get the missing and the tach problem resolved.

Thanks, Ron