<VV> Slipping Powerglide Fixed! Just a question

[iscdirector]

Did anyone experiencing this situation check the old modulator with a hand vacuum pump before installing it to see if it worked correctly or not. It should take 15Hg of vacuum to pull in tight. If its not working that would explain why the trany did not work correctly with a new one but did with the old one

Michael Kovacs <kovacsmj at sbcglobal.net> wrote:   I have the same question and had the same problem solved with a rusty old VM. Think Clark's has a comment on this mystery??? His modulator is still on the shelf after not performing properly. I even developed a custom tool to remove the darn thing. (a crows foot cut down to slide betweeen the case and the VM)

Steven wrote: "Ken Maxwell" wrote in message dated Friday, 
November 30, 2007

I finally got around to taking off my beautiful new, gold, non-oily, 
non-rusty vacuum modulator valve. I then dug through my garbage can and 
finally found my "Titanic" salvaged, rusty, oily, dented, 100 year old 
modulator and reinstalled it. Took the car for a drive and it shifted 
beautifully! No more slipping between upshifts!


Me too, Ken! This afternoon I climbed deep into my shed and removed the VM 
from my spare '61 PG, cleaned off most of the crud, and installed it in my 
'69 which has been slipping under light acceleration on the 1-2 upshift. 
Test drove it this evening and the 1-2 slipping is resolved!

So what is it with the new vacuum modulators? Are the new VMs just a little 
bit different or is it something about some of our old PG transmissions that 
causes them to function best with an old used (broken in?) VM ?

- Steve brown

'69 Monza Convertible 140 PG
'62 Rampside


_______________________________________________
_______________________________________________



MIKE KOVACS
_______________________________________________
This message was sent by the VirtualVairs mailing list, all copyrights are the property
of the writer, please attribute properly. For help, mailto:vv-help at corvair.org
This list sponsored by the Corvair Society of America, http://www.corvair.org/
Post messages to: VirtualVairs at corvair.org
Change your options: http://www.vv.corvair.org/mailman/options/virtualvairs 
_______________________________________________


       
---------------------------------
Looking for last minute shopping deals?  Find them fast with Yahoo! Search.