<VV> Modulator valve vacuum specs

[Harry Yarnell]

This 'kick like a mule' can be a broken damper spring on the low band apply 
piston.

harry yarnell
Poohbah of Perryman
perryman garage and orphanage
hyarnell1 at earthlink.net
----- Original Message ----- 
From: "Stephen Upham" <contactsmu at sbcglobal.net>
To: "Virtual Vairs" <virtualvairs at corvair.org>
Sent: Sunday, May 11, 2008 10:29 AM
Subject: <VV> Modulator valve vacuum specs


> O.K. Let me put this another way.  Is the operating vacuum on the
> modulator supposed to be starting at 12 HG and pulled in all the way
> at 15 HG?  I tested the new modulator that I had on the shelf (I
> ordered two from a reputable east coast vendor at the time of
> replacement and I assume that they will be within the same specs).
> I'll need to create a wrench to remove the modulator in order to
> check the one on the car.  It started to move at 16 and was full open
> at 20.  If the other is of the same ilk, and this is an unacceptably
> high vacuum range, that might explain why the transmission will kick
> like a mule in changing from d to l when coming to a slow stop and
> being barely noticeable when I apply a hard brake just before the
> downshift (I've increased the vacuum pressure to meet the faulty
> specs?).
>
> Stephen Upham
> Dallas, Texas
> Vice-President / North Texas Corvair Association
> CORSA
> Corvaireum //
>
> Mid prod. #18732 -1965 Monza Hardtop 110, Sierra Tan, Saddle
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