Re: IML: distributor timing

[sosmi@xxxxxxxxxxx]

Chris, the timing should stay fairly stable at all RPM's.(With the vacuum dis-connected) The easy stuff is, a good set of points, like Standard Blue Streak, not the standard import cheapies.The other thing is, since this is a "Rebuilt" distributor, it's possible the advance slots are worn, and have not been filed to remove the burrs. The advance weights may also be stiff, or not lubricated.One other thought, I don't recall if you were also changing carbs, but 1500RPM is about when you go from idle to hi-speed jets. The transition point can cause missing, and stumbles. The last concern would be timing gears and chain.Call around to some High Performance shops, and see if any have a distributor machine, they can run your dist. and tell if thats the problem.Ya'll have a nice day, Dave.

 

> -------------- Original message -------------- 
> From: "Chris Strohmeyer" <chrisstroh@xxxxxxxxxxx> 
>
> > Hi all, I need a clarification on timing with a light on my 67 Imperial 440. 
> > When at idle with the vacuum advance disconnected I get a steady strobe 
> > image on the 6 degree before mark. However, if I rev the motor to a steady 
> > say 1500 or there abouts the mark moves but doesn't hold rock steady..it 
> > jumps around a little bit about a half an inch. 
> > 
> > If I hook my advance back up and rev to full advance it advances but 
> > doesn't hold steady. Should these readings be ROCK steady or close to rock 
> > steady? 
> > 
> > As some of you probably know, I'm still have an erratic running engine that 
> > comes and goes as it pleases. The distributor I replaced from Kragen's (I 
> > know I'm going hear it about that
> ) because of this problem but it's still 
> > there. A mechanic told me the "new" one could have a bad vacuum advance and 
> > or sticking or improper tension advance springs. 
> > 
> > What should I look for? 
> > 
> > Thx, 
> > Chris Strohmeyer 
> > 67 Imperial Convertible 
> > 
> > 
> > 
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