Re: vacuum advance problem

Posted by Mike On 2012/5/30 8:23:53

I also have the distributor that moves the whole unit. It's a neat setup! Make sure that the two plates that hold it in the block are on right and a little lube, so it doesn't bind when you snug it down. A quick ID on the distributors is that the vacuum arm connects to a gauge with a pointer and a long slot on the outside of the dist body, while the plate moving ones just run inside a hole on the distributor body to connect to the plate.

Since there is no ported vacuum on our cars, the distributor will be very advanced when working well, at idle. A couple quick blips of the throttle and you will see it jumping around as it rotates. It's kind of neat to watch, and i like this model distributor very much for that purpose. While doing a ton of testing and tuning, i found mine had randomly stopped working as well one day. Got a new one from MM and it's been good since, although the car has a knock so it hasn't moved much.