TDC = Top Dead Center = 0 degrees
BTDC = Before Top Dead Center = "advanced"
ATDC = After Top Dead Center = "retarded"
All degree references will be to TDC, either advanced (before) or retarded
(after). Even if the "stock" setting is 15 degrees BTDC, and you "retard"
the timing 5 degrees, that is still 10 degrees BTDC. Does that make sense?
on 3/16/03 2:25 PM, Aubrey Schneider at email@example.com wrote:
> Subject: Re: torque & tuning
>> As to 15 degrees--that's a conservative factory setting > .
>> So, for now, you can try setting at 18 or 20, > >
> Hi Bob,
> Thank you for responding.
> Are we still talking 18-20 deg advanced.ie beyond TDC & going clockwise, as
> opposed to going anti-clockwise to retard.
> Sorry to be so precise but I find that unless I am that precise, I have
> problems. For example when setting rich or lean on the ZS, I didn't
> understand going anti-clockwise enriched & clockwise leaned.
> Thanks again,
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the primer red one with chrome wires
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