In a message dated 6/2/99 7:36:04 AM EST, CraigS@iewc.com writes:
> Question to the list.
>
> One of my employees has a 1980 MGB ( I tried to talk him in to a REAL car )
> It has the smog stuff off of it, he is running a Weber downdraft with
> headers, he has a crane electronic ignition.
>
> The question is the if standard timing should be 10 degrees with all the
> smog stuff what should it be with all that removed ?
>
> I have heard that BL retarded the timing to help with the emissions, we are
> lucky enough not worry about the emissions right now. He is looking for
max
> power timing setting.
>
> What is it ?
>
Advance it two degrees and road test under severe conditions (accelerating up
hill at low rpms). If it doesn't knock or ping, advance it another two
degrees. Repeat
until knocking/pinging can just be heard. I believe that this is called
"power timing"
and, emissions issues aside, is a good way to optimally time, taking into
account
individual engine characteristics like carbon deposits, worn vacuum or
mechanical
advance etc.
IM_V_HO, I don't think that your employee is going to be able to push much
more
advance than 10BTDC (it is 10BTDC and not 10ATDC, yes?) anyway.
Just my thoughts, this is how I've done it on my own car. I'd be interested
to hear
if my fellow/fellowette listers agree...
-Greg
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