> You also can change damper springs.
But that changes different parameters. A stiffer spring means that the carb
requires more airflow to open the dashpot fully. A softer spring means that
less airflow is required. This has more to do with calibrating the carb for
the displacement and rpm of the intended application than it does with
compensating for lean spots under acceleration. Changing the spring also
means that your needle is now wrong for your application, whether it was
right with the other spring or not. These are very simple carbs; the only
complicated bit to them is the needle. The factory put a lot of work into
getting the needle right for the application. The moment you change the cam
profile, the compression ratio, the exhaust header, etc, you have now
guaranteed that the needles in your carbs are no longer optimal for YOUR
engine. Getting them right again can be a long and tedious operation
involving more art than anything else.
David Lieb
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