BobDunahugh wrote on Wed, 22 November 2017 19:01

When I went to set the timing to the proper 8 degrees of advance. It ran terrible. Called Ken Henderson. He said that the outer part of my harmonic dampener had rotated. I DID NOT know that the Olds unit could do that. I was aware of other engine. So if at some time your timing was set to a moved mark. It could be affecting the timing. Thus reducing mileage. I'm thinking that I may have set my timing retarded the last time due to this. There are indexing marks that GM did when new. New one is $42. Bob Dunahugh 78 Royale

I will take the moment to both warn you all that this can happen to any engine that has rubber damper installed. That means just about every passcar engine produced since WWII. I have had it happen to new parts on durability engines. If you have a chance check for witness marks. If you don't see them, make some.

And I will take a little more of your time to wish everyone in the great family a Happy Thanksgiving. We are getting ready here and will have the daughter and her family here and have number of four grandsons from our son's side here for the weekend.

Matt