[Healeys] Radiator cap thermostat combinations

[Derek Job]

A thermostat is there to ensure a minimum operating temperature. Changing
the thermostat and radiator cap will not make any engine run cooler.

Derek


On Tue, Feb 12, 2013 at 5:17 AM, Robert F. Begani <rfbegani at speakeasy.net>wrote:

> Hello List:
>
> I will buy the recommended 860/187F for my BJ8 and join anyone who wants to
> make a Group purchase from Kees.  After reading all the comments the past
> days, I need to remodel my cooling system with a thermostat and fans etc
> before contemplating a new core for the radiator.
>
> Bob Begani
> 67 BJ8 Punta Gorda Florida
>
> -----Original Message-----
> From: healeys-bounces at autox.team.net [mailto:
> healeys-bounces at autox.team.net]
> On Behalf Of Oudesluys
> Sent: Sunday, February 10, 2013 1:45 PM
> To: healeys at autox.team.net; Randy Hicks; Michael MacLean
> Subject: Re: [Healeys] Radiator cap thermostat combinations
>
> This discussion took place during my holiday in San Diego/Las Vegas/ Grand
> Canyon/Mohave and other Deserts, Quartzsite etc.
> I have tried to respond but I am uncertain if anything at all came through,
> the WiFi in most h/motels was atrocious, very slow.
>
> For your information I still have the following sleeved bellow thermostats
> available:
> 4 x AC TF1, 720C / 1620F
> 3 x AC TF3, 680C / 1540F
> 4 x AC TF4, 860C / 1870F
> 2 x Smiths 85025/.., 860C / 1870F
> 2 x Smiths 85025/.., 800C / 1760F
> 1 x Smiths 85025/.., 820C / 1800F
>
> Smiths and AC thermostats are interchangeable/equivalent. Smiths was mostly
> used as OE on the AH, AC on the TR2/3/4.
>
> Officially these thermostats should be used with a pressure cap of no more
> than 7psi to prevent collapse of the bellows, however I know of several
> people that use 10psi pressure caps without any trouble.
> If you have sufficient,meaning overcapacity of  the radiator, or if your
> engine does never run hotter than say 50 over the opening temperature of
> the
> thermostat, use the 860C / 1870F thermostat with a 7psi pressure cap plus
> proper overflow bottle. The engine will run better and more efficiently.
> Fill up the radiator to the top of its neck and the overflow bottle to half
> way with the tube reaching the bottom. After topping up a few times all air
> will be expelled from the cooling system and the radiator will be fully
> filled up with coolant.
> If your car runs to hot at any time there is no way you can fix this with
> an
> other thermostat with a lower opening temperature, you just buy a little
> extra time only before the engine starts boiling
>
> If you want to buy thermostats ($40 each, except the AC TF3 which will be
> $55), get a few mates together (AH, TR2/3, Jaguar etc.) as shipping 1
> thermostat to the US costs the same as shipping 13, i.e. $31 registered
> post
> (parcel up to 2kg).
>
> Kees Oudesluijs
> NL
> $12.75
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>
>
>
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