just rebuilt runs bad

6tfo said

Will do, not sure what "timed port/direct port" means but I'll do a little research.

You guys may be on to something. I verified the MSD wiring several times but I did find that silicone inside the (used) MSD Dist.. I'm wondering now if it wasn't holding something that was put in backwards or covering wiring that was crossed.

Also, when I hooked up the Mopar distributor, I had to use alligator clips to connect to the MSD. It was dark and I can't say for sure they weren't reversed.

Going now to get the points Dist. this morning.

Thanks!

Click to expand...

Timed port is taken from above the throttle plate and has no vacuum at idle.
Direct port has full vacuum at idle. All initial timing should be set with the vacuum line disconnected from the vacuum advance.
Silicone is used in the MSD distributor to help secure the magnetic pickup from vibration, even from the factory.
When those pickups are replaced the magnet has to be installed the correct way and the gap to the reluctor has to be .025 to .030. If it's been replaced there is also a possibility that it was tightened too much and the magnet has cracked which will cause all kinds of false triggering.