Yes, at the bottom of the distributor there are two spring with weights of different size. This is so there are two mechanical (centrifugal) timing advances. I have no idea how far apart in RPM it takes for one or both weights to cause advance, but I would have guess (by sight) that the advance for both was about 10 degrees... Jim 1537 > --- As a side note, I noticed the when the vacuum is disconnected > and > tested the timing, pulling on the throttle advanced the timing. > Question is, does the D utilize mechanical (centrifugal) advance as > well as vacuum advance? > > Thanks for the advice, > > Travis > 3512 > > > > > > > > To address comments privately to the moderating team, please > address: > moderator@xxxx > > To search the archives or view files, log in at > http://groups.yahoo.com/group/dmcnews > > Your use of Yahoo! Groups is subject to > http://docs.yahoo.com/info/terms/ > > ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/web/.