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Went to put in my new ignition and noticed powdered metal dust and these chunks of what look like vacuum advance springs (?). Gonna take it apart and investigate, but are there rebuild springs/kits available for my 1967 352?
distributor advance springs?
your thoughts? and what happens if only one spring works?
Yes, looks like an advance spring. With only one, it just means it will bring more advance in quicker. Not really a bad thing unless it starts to detonate/knock from it. All depends on motor/fuel quality/driving habits.
Question, is that vacuum advance adjustable? I was told it was.
Also, I would love to get the casting info from the distributor, but it is behind in a blind spot. I am hesitant to remove it as I would rather keep it in place.
I also noticed the lower back plate 12151 has what look like nylon spacers (3) for the top plate to float on. one is loose. Are there replacements for those?
You'll need to look in the Shop manual to determine the advance curve for your truck/engine/transmission combination.
It sounds a little like you'd be time and money ahead by installing a remanufactured distributor. It will have tight bushings and freely moving breaker plate and also have a vacuum advance can that is more easily adjustable. The factory types are adjusted by removing shims, more modern types like the Crane use an allen wrench through the hose port. Original vacuum cans will often have leaky diaphragms by now.
If I were to get a rebuilt distributor, can anyone suggest a specific model? I'm a newbie and want to make sure I get the correct model. TBH I'd love to keep this original version.
I see several different versions on lmctruck's site:
