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Emissions tricks? 120-130

posted by  mario_e on  Wed Aug 3 02:06 CST 2005
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last visit: Wed Sep 17 06:43 CST 2008
[RELATED]

I've read some recently on the advantages of vacuum advance and its been my impression that a lot of what was going on in the early seventies had to do with passing emission standards than making engines run better.

The article in the current Classis Motorsports is what got this all started. Better MPG and part throttle performance is exactly what I would like to improve.

I'm still trying to figure this out, but I'm thinking that with vacuum advance the carb tuning and total advance curve can be adjusted for better overall efficiency.

Another component seems to be a high energy spark, John Parker seems to be currently thinking that it can help off-idle throttle response. Seems to eliminate lean stumble without having to adjust the carb so much that you get too rich of an air/fuel mixture at cruise.

In any case I'm still researching.

-Mario E.






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