A stiffer spring I believe will weaken the mixture (i.e. keep the needle
further in the jet).
There's a couple good books for race tuning SU Carbs... I suggest you get
them to help you sort out how to spring and needle your carbs. If you're
lucky, someone on the list will already have done it.
On Wed, Mar 20, 2013 at 7:48 AM, <warthodson@aol.com> wrote:
> Alan,
> I am trying to determine two things as follows:
> 1. I would like to have a basic understanding of what the affect of
> changing carb spring rates has on an engine if no other component is
> changed. Kind of like changing needles, of which I have a basic
> understanding.
> 2. I have a BJ8 engine with 10:1 compression, a 272 degree Elgin cam and
> triple HS6 carbs. There is no factory spec for this set-up. So I am
> interested in knowing what I might expect if I were to make a change to the
> springs.
> Gary Hodson
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