Rick Lindsay wrote:
> Eric writes,
>
> > At
> > the peak of performance without the aircleaners it showed an improvement
> > of almost 7hp - cheap extra power, eh? And that wasn't with re-tuning
> > or any fancy filters/horns... simply NO aircleaners.
> >
> > Any thoughts? K&N's or similar and bigger needles? Air horns and
> filters?
>
> Calculate the length of the path from the mouth of
> the carb to the back of the inlet valve. That is the
> tuned length of the inlet 'pipe.' Think pipe organ.
> The 'pipe' will resonate at the frequency defined
> by the length of the pipe and the velocity of sound
> in air, creating constructive and destructive interference
> within the charge. (BTW, the same thing happens with
> your exhaust.) Adding trumpets to the carbs lengthens
> the 'pipe' and lowers the resonate frequency. The
> goal is to 'tune' the length of the 'pipe' to give you
> maximum constructive interference (increased pressure
> at the valve end) at the rpm where you need maximum
> torque.
> Details sent privately upon request.
>
> best,
>
> rick
Rick, this has to be one of the more interesting points raised in a while; why
make it private??? I make the motion to keep it public so we can all enjoy and
benefit from what you have to say.
Jim
microdoc@zoominternet.net
1960 MGA 1600 Very Red
1974 MGB-GT Damask (Very Burgundy) Red
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