David Macedonia wrote:
> Listers,
>
> I'm stumped. In trying to set the timing of my '66B (18GB engine, which
> I just got started for the first time in 9 years!), I found that I have
> to rotate the distributor almost as far as it can go counter-clockwise
> (to the point where the vacuum advance hits the oil pressure gauge line)
> and have the timing vernier rotated fully clockwise before I can get the
> timing to be approximately 15 deg. BTDC @ 800 rpm. It's been years since
> I installed the timing chain, but could it be possible that I'm off by a
> tooth or two in the relationship between the timing gears? Or, is there
> some other explanation? My concern is based on pictures of similar cars
> that have their distributors oriented such that the vacuum advance is
> below or just to the right of the heater control valve. Or, am I just
> missing something obvious?
>
> It turns out that I have a leak in my radiator, so I'll probably have to
> remove it. So, if I need to work on the timing chain, this will be as
> good a time as any.
Why would the timing of the cam and distributor be out? If they have
not been removed, they can't have changed. The timing chain cannot
jump a tooth. It's possible the distributor drive gear is installed
wrong, but if it is, it always was, unless it has been removed and
reinstalled wrong. These things don't change unless somebody changes
them. Are you checking the static timing? The timing point is where
the points break, when they first open. If you're using a timing
light, I'm pretty sure the vac advance must be disconnected and the
timing set at a low idle, so the centrifugal advance isn't operating.
The timing chain is either broken or working fine; there's no in
between. It's not something that gets out of adjustment.
-Rock http://www.rocky-frisco.com
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