[urq] TDC, Cam, and Dist Timing

[Ed Kellock]

That's what I thought.  My dist was off a bit in regard to the center
of the rotor end being centered on the notch.  I assumed someone did
that to advance the timing, but I thought I was correct in that it
would do nothing in this case, so I centered the notch with the rotor.

This was a part of my chasing the ignition cutout.  I don't think it
had anything to do with the resolution, but then I don't know what
actually seemed to resolve it.

I installed an MSD Blaster coil the other evening and cleaned up the
little tab assemblies that bolt onto the coil posts.  I could tell
that the ignition was stronger with the first start because the engine
started to fire immediately, almost seemed like it did it before it
made a full revolution.

The old girl is running the best it ever has, although it still has
some issues.  Got a crankcase full of new oil the next night.  Still
leaks like a sieve though.  I think those leaks are my only remaing
vacuum leaks at this point.  I've leaned out the mixture enough so
that it only pops once on a cold start now with the summer temps and
doesn't smell ungodly rich when I get out of it in the parking garage
at work.  I need to have my own timing belt party... a V8, the urq,
and my CGT.  Don't even ask when the last t-belt was done on the CGT. 
I'm embarrassed to say.

Ed


On 6/10/05, Buchholz, Steven <Steven.Buchholz at kla-tencor.com> wrote:
> Timing is determined by the F/TCU using the engine reference and speed
> sensors and the various parametric inputs.  The only thing the Hall
> sender in the dizzy does is gate off every other reference sensor pulse
> so the ECU only sees TDC compression #1.  Since the timing pin is offset
> the pulse does not coincide with TDC ...
> 
> Steve B
> San Jose, CA (USA)
> >
> > I found that my distributor was a little bit off, may have been
> > advanced at some point.  Not sure that does anything on these cars
> > though like it did on the old 4kq/CGT (JT?) engines.
> _______________________________________________
> Audifans urq mailing list
> Send posts to: mailto:urq at audifans.com
> Manage your list connection: http://www.audifans.com/mailman/listinfo/urq
> Have an urq question?  Check the Audifans Knowledgebase!
> http://www.audi-quattro.org/cgi-bin/twiki/view/Audi/UrQuattro
> Have an urq answer? ... Please help others by adding to the KB ... all contributions welcome!
>