<VV> Thermostats

[Jim Simpson]

I think if I do any further testing it will be in hot oil.  I can measure
the temperature easily enough and don't have to worry too much about fumes
or it being flammable as long as I don't get too carried away.  In any
case, I'm going to swap in one of the reproduction thermostats and see if
it opens a bit sooner (or stays open longer).

Jim Simpson
Group Corvair

On Tue, Jul 31, 2012 at 8:34 PM, <jvhroberts at aol.com> wrote:

> It might be worth testing these in boiling antifreeze, straight up.
> That'll raise the temp to over 260F. But, be careful, the fumes can be
> flammable. And intoxicating! Maybe a deep fat fryer?
>
> John Roberts
>
>
> -----Original Message-----
> From: Jim Simpson <simpsonj at verizon.net>
> To: Virtual Vairs <virtualvairs at corvair.org>
> Sent: Tue, Jul 31, 2012 8:10 pm
> Subject: <VV> Thermostats
>
>  Does anyone know at what temperature the stock thermostats are supposed to
> open?  I can't find it in any of the standard references.  (One of the
> damper doors on my Corvair doesn't seem to open properly.  It's free to
> move, but lately even when the engine is hot, it seems to stay closed.  And
> yes, it is adjusted according to the book.)
>
> Supposedly the thermostats are filled with one of the isomers of butyl
> alcohol but there are four varieties, each with a different boiling point.
> And the fill may be a mix.  Even if I knew which one, it's still a bit more
> complex since bellows is designed to fail open and therefore is under a
> partial vacuum when cold which would affect the boiling point.
>
> I've checked several reproduction thermostats and they start to expand in
> boiling water but not fully.  By contrast, the one I removed from the car
> -- a GM original -- doesn't show any signs of expanding in boiling water.
>
> Jim Simpson
> Group Corvair
>  _______________________________________________
> 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 <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
>  _______________________________________________
>
>