Hi Alan,
Now you're getting me confused. The text & pic at mgaguru says "For this
thermostat the sleeve is in the full raised position when cold, nearly
touching the top mounting flange. The closure to block fluid flow is
between the inner cylindrical body and the top flange. When this unit
approaches the preset operating temperature and begins to open, the
sleeve moves downward (along with the cylindrical body) to block the
bypass port."
From the description & the pics, it appears that the sleeve blocks the
bypass port when the thermostat is hot. Just like it is supposed to do.
What am I missing?
Regards,
Dave Russell
BN2
Blue One Hundred wrote:
> Bob -
> About 4 years ago, The Nocks were selling these with a special brass ring
> added to the thermostat, which blocked off the bypass port when cold. You
> can see it here:
> http://mgaguru.com/mgtech/cooling/cool_103d.htm
> Of course, they don't sell these anymore and apparently the sleeve worked
> opposite of how it is supposed to anyway... but heck it does help my car
> keep much cooler, maybe because of the wide mouth opening.
> Cheers,
> Alan
> '53 BN1 '64 BJ8
>
> On 10/18/05, Bob Spidell <bspidell@comcast.net> wrote:
>
>>Alan,
>>
>>
>>If, by "balanced sleeve," you mean this:
>>
>>
>>
>
> http://www.stewartcomponents.net/Merchant2/merchant.mvc?Screen=CTGY&Category_
> Code=Therm
>
>>... then this thermo doesn't block the bypass port at all. This is a
>>standard Robertshaw
>>thermostat with some holes drilled in it (I know, I have one). The sleeve
>>moves, but its
>>diameter is too small to block the bypass port. The modified thermo I'm
>>using is one of these
>>with an extra, outer sleeve soldered to the inner sleeve. The outer sleeve
>>partially blocks the
>>bypass port when the thermo opens, but it probably doesn't work as well as
>>the
>>original.
>>
>>
>>bs
>>***************************************************************
>>Bob Spidell San Jose, CA bspidell@comcast.net
>>'67 Austin-Healey 3000 '56 Austin-Healey 100M
>>***************************************************************
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