[Mgs] 80 B Timing question

[Max Heim]

Yes, and I might note that this is why timing is set at a specified RPM.
Consult the service manual for details.

--

Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the primer red one with chrome wires

PS: This should not have come as a surprise. AFAIK all distributors have a
mechanical advance system, although some do not have a vacuum advance
system.



on 9/19/09 9:40 PM, Mark J Bradakis at mark at bradakis.com wrote:

>>  I noticed that the timing mark moves as a
>> function of engine speed.  The faster the engine speed, the
>> more advanced the spark. The slower the less advanced.
> 
> The distributor has a mechanical advance system built in.  Using weights
> and springs it rotates the plate for the points to give more advance at
> higher revs, less at lower.  This is independent of any vacuum assisted
> motion, as you noticed.
> 
> mjb.