Primary Ignition Lead Routing Corrrect?

[Larry M.]

My memory has failed me during re-assembly of my distributor.

Is my routing for the primary lead connecting to the Uniset correct? I don't recall exactly where the lead rose above the breaker plate, and it needs to be in a location that will prevent it from rubbing as the vacuum advance rod and breaker plate move back and forth.

If the area that I have it in is not correct, what is? I've searched for photos and haven't found what I need. If any of you have a photo that shows where the lead rises above that plate, it would be ideal.

Thanks,
Larry


Distributor.jpg

[Edward J.]

Re: Primary Ignition Lead Routing Corrrect?

Larry it looks as though you have you correct routing, What I do is take a vacuum pump and fully open the vacuum advance to make sure the wire is clear of the plate, The lead can be extended or re-tracked by removing the groment at the base of dist.

[Larry M.]

Re: Primary Ignition Lead Routing Corrrect?

Ed,

Thanks, yes, I've used vacuum to actuate the advance back and forth to look for any binding issues, and moved the lead a bit in the grommet for what I thought was best access.

The illustration in the Chassis Service Manual was indistinct enough that I couldn't tell exactly where the lead should be positioned, and I tried it in several different locations, all of which seemed to be workable, but I have a feeling that the GM engineers must have decided on a specific location for best results, and I don't want to try to second-guess them.

Larry

[Terry M.]

Re: Primary Ignition Lead Routing Corrrect?

Ed,

Thanks, yes, I've used vacuum to actuate the advance back and forth to look for any binding issues, and moved the lead a bit in the grommet for what I thought was best access.

The illustration in the Chassis Service Manual was indistinct enough that I couldn't tell exactly where the lead should be positioned, and I tried it in several different locations, all of which seemed to be workable, but I have a feeling that the GM engineers must have decided on a specific location for best results, and I don't want to try to second-guess them.

Larry

Larry,
The location for that hole for the grommet for the ground wire was determined before Unisets existed. I recall seeing an entry in Chevrolet Service News about the Unisets and their fitment, but not having a early C3 with points I didn't pay much attention to it. If that CSN entry is not in the back of the 1968-69 TIM&J, it will be a while before I can get to it. My storage area (where the 1970-72 CSNs are) is iced in and while that makes an excellent security system it is at the expense of my access as well.