<VV> vacuum sorce YH carb.

[Kirby Smith]

I bought mine so long ago that I don't know exactly what was part of the 
kit versus what was additional to the kit, but my Dale setup includes 
two additional parts: an idle switch that mounts on the crossover intake 
plumbing actuated by the throttle mechanism, and a vacuum solenoid 
(mounted to one of the muffler bracket screws on the upper side of the 
sheet metal near the coil) that is in series with the 
vacuum-advance/pressure-retard pressure line from the r.h. intake 
manifold.   This latter part is powered by 12 Vdc, e.g. from the 
ignition coil supply, and interrupts the vacuum when idling (IIRC).   If 
memory serves, the directions were adequate.

kirby


Duane, Jim wrote:
> 	Hi Ron.
> 	It's a pretty simple device.  The normal vacuum advance has a
> tab that prevents the diaphram from moving when pressure is applied.
> Dale takes the tab away.  When you take it out of the box and look at
> the arm, it floats.  You do get instructions on initial timing.  (22-24
> BTC).  Installation is pretty easy, if I recall.  It's a direct
> replacement for the pressure retard in the car.  Dale recommends that
> you plug the line that used to plug into the pressure retard into the
> Dale unit. (which I did.)  Vacuum while not under boost and reatrd when
> you are spooling.
> 	Two cautions:  You will be fiddling with idle (it will go up)
> and put small hose clamps on the vacuum line.  After the hose blowing
> off the unit a couple of times after boost, you'll come to the same
> conclusion.
> 
> JED
> 
>