questions about high compression 4kq's with NG/NF/Hybrid and CISE

[JShadzi at aol.com]

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[ Picked text/plain from multipart/alternative ]
Ah ha!  Yep, BTDT, glad you caught that, now at least you know where you are
with the timing, good stuff, keep us posted.

Javad

In a message dated 6/3/2002 12:58:40 AM Pacific Daylight Time,
4ktq at myrealbox.com writes:
>
> > Also, are you positive you are using the right timing mark, or setting
> the
> > initial timing properly?  (I know, but I've done it before, double check
> it)
>
> After seeing this I went back and re-read a few pages in the old Bentley,
> pages I must have been over dozens of times, and realized I have been
> setting initial advance wrong for years!  There are two marks on the
> flywheel, the 0 mark for TDC, and a bar | 6 degrees before it.  Bentley
> calls this | bar "ignition timing mark" which I interpreted to be the mark
> you line up with the bellhousing notch while twisting the distributor and
> watching the flashes from a timing lamp.  I failed to realize that when my
> timing lamp is set for 0 degrees and I use this mark, I am actually setting
> 6 degrees btdc.  This would mean I have been running those 6 degrees, plus
> whatever my timing lamp was set to, for a total advance closer to 14
> degrees!  No wonder I was getting knock at anything over 1/3rd throttle.
>
> I've probably made the same mistake on both the 4ktq and the Gti, but with
> knock sensing ignitions, they don't mind as much where the distributor is
> as
> long as the hall window is open when the flywheel pin comes around.  I'll
> have to check on them too.
>
> With that in mind, the motor is currently set to 6 degrees at idle, which
> is
> a noticable reduction in power from 10~14, but allows me to use wide open
> throttle with only faint knock.  I think I'll try a little more fuel and
> cam
> timing adjustments to recover some performance and eliminate the remaining
> trace knock.  I'll let you know when I find a happy medium and what it is.
>
> Many thanks to all who replied!
>
> -Derek
> 4ksq 4ktq Gti 16v
>