KINSLER BARREL VALVE (SCROLL) 23/K

Description

23/K, .200″ wide –
part throttle fuel ramp x
.300″ wide – full
throttle fuel ramp. We make a
variety of ramp widths and
depths, with various rates of
ramp depth taper. What works
well for a drag racer may not
be correct for a road racer.
The correct spool for an
application is the one that
delivers the proper amount of
fuel at all the part throttle
opening angles. The correct
spool for an engine equipped
with a 2-1/16″ injection
manifold is probably not the
right one for a similar engine
with a 2-1/2″ injection
manifold. The air flow
increase per degree of
throttle rotation using the
larger throttle will be
greater than that of the
smaller one, therefore
requiring more fuel per degree
of spool rotation. Most of our
competitors spools work well
at idle and wide open
throttle, but do not provide
the proper amount of fuel at
part throttle. Since the ramp
is fixed, the only way to
achieve the fuel required at
part throttle with one of
those spools is by richening
the idle, which advances the
entire ramp. Unfortunately,
the idle is now too rich. Plug
fouling and engine stumbling
may occur.