<VV> MODULATORS

[steven at sashimi.org]

Here's a bit of follow up. Just so there's no misunderstanding I am not in
any way criticising Clarks.  To the contrary, I am extremely pleased with
them, the quality of the parts I recieve, the courtesy and knowlege of
their staff, their fast speed to delivery, and their response to my inquiry
about this problem.  

That said, to recap, I had considerable 1-2 upshift slipping with the new
Clarks vacuum modulator installed in my PG, which resolved upon installing
an old, cruddy, used VM.     

I have written to Clark's and they think the problem I experienced (slip on
upshift) may be due to PG case to case (dimensional) variations. Based on
their communications, they are not having complaints from others about the
vacuum modulators.  At their request I am sending the unit back to them so
that they can dissect it.  

Incidentally they did mention that doubling up on the vacuum modulator
gasket might help, but this doesn't really explain to me why an old VM
would work when the new one does not.  

- Steve

'69 Monza convertible 140 PG
'62 Rampside


Original Message:
-----------------
From:  N2VZD at aol.com
Date: Tue, 29 Jan 2008 04:24:15 EST
To: virtualvairs at corvair.org
Subject: Re: <VV> MODULATORS


 
 

i have used several of the clarks units over the years with no  troubles.
you must make sure the rod  it moves is free and clean. i always pull  it
and 
check it out.
the modulator for the big car powerglide looks similar but has a different  
size plunger...it will screw in but wont work as i remember...been a long 
time.
napa  sold an adjustable one for many years , but i never found it to  work 
as well as the correct replacement.
regards, tim colson





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