<VV> vacuum sorce YH carb.

[Duane, Jim]

	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

  

-----Original Message-----
From: virtualvairs-bounces at corvair.org
[mailto:virtualvairs-bounces at corvair.org] On Behalf Of Ron
Sent: Wednesday, May 11, 2005 3:06 PM
To: UltraMonzaWest at aol.com; VirtualVairs at corvair.org
Subject: Re: <VV> vacuum sorce YH carb.

Do instructions come with the Dale advance/retard units?  I was going to
order one but won't without good instructions.
RonH

----- Original Message -----
From: <UltraMonzaWest at aol.com>
To: <VirtualVairs at corvair.org>
Sent: Wednesday, May 11, 2005 11:34 AM
Subject: Re: <VV> vacuum sorce YH carb.


> In a message dated 5/11/2005 10:36:13 AM Pacific Daylight Time,
> jimster1 at earthlink.net writes:
>
>> Why not just tee into the line that goes to your boost gauge.  If you

>> have
>> one of Dale's vacuum advance\pressure retard units it will need to
see 
>> boost
>> pressure as well and it won't get that from any connection upstream
of 
>> the
>> turbo.
>> Jim b.
>> '66 Turbovert
>>
>
************************************************************************
******
> *******
>
> That's FULL  vacume  ALL THE TIME...and only works correctly if you're
not
> getting boost....at WOT!
>
> TRUE  VA  is from "ported"  vacume...ABOVE / IN FRONT of the throttle
> plate....variable..
>
> YH  have no provision..but can be drilled!  There's a blank spot where
it 
> WAS
> used on other models...
>
>
> The Mechanical way to get it to work right......
>
> Drill  and tap into ported vacume.......run the hose to the VA/PR
> diaphram...
>
> "TEE  into the hose  with  a "checkvalve"  at both sources.......then
if
> vacume is present......it SUCKs  the one valve open / other shut  and 
> gives
> varying amounts of VA....
>
> Under boost......pushes the one open....other shut  and varying
degrees of
> Pressure retard....
>
>
> If this is too complex..ggggg   Get a SAFEGUARD  with the VA
controlled 
> port
> built in....
>
>
>
>
> Matt Nall / Patiomatt / WCUH / Chairman V V
> 69 Monza Cpe., 66 Monza vert, 65 Crown v8 Cpe.
> Somewhere between Reno, NV and Coos Bay, Or.
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