Hi Tim,
Bud Krueger's advice is excellent information and that chart of
advances is interesting. MG used a variety of distributor characteristics
for the XPAG engine. WIth a mirror, you might be able to see the model #s
on your distributor to compare it to the chart.
Quick & dirty setting method is to make a mark about 4 degrees before
TDC, then do your static timing off that mark. Today's fuel is better
stuff than the pool fuel for which these engines were configured, so a
bit of additional advance is usually beneficial. Once it's running well,
drive up a hill at 2500 rpm and listen for knocking. If there is some,
retard the spark a little and try again.
Another way is to determine the distributor advance curve for your
distributor from the chart, note the advance at, say, 3000 rpm, calculate
the diameter & circumference & degrees of the pulley, make a mark there,
then time the engine with a strobe light at your new mark. The advantage
to this is that you can get a better idea of the advance weights and
their movement at various RPM, but it's harder to do and not really an
improvement over the basic static timing method.
Bob
On Mon, 3 May 2004 08:52:27 +1000 "Tim Newton"
<timnewton@menziesgroup.com.au> writes:
> Hi every one can some one please comment on what ignition advance best
suites the
> XPAG. I see the instruction book says TDC, suggesting no advance?
> Tim Newton
>
> tc/9356
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