Erich,
As Arthur Dent, previous resident of the ex-planet earth, England, and
his friend Ford Prefect would comment: "Don't panic".
All you say is correct with the stock system, and Rootes recommends 160
F thermostat except in English Winters (9 months). Since the only time
it freezes here is in the ice cube tray, I just stick with the 160, and
it runs very nicely at 190 F.
As far as "the cure" is concerned, I am sure you have read the article
"Cool It, Buddy!" on TigersUnited.com, for the complete answer to Tiger
cooling, Earth, the Universe, and Everything.
http://www.tigersunited.com/techtips/SteveLaifmanValance/pt-SteveLaifmanValance1.asp
"42", and don't forget your towel.
Steve
Kathy and Erich Coiner wrote:
>Richard,
>
>The first fact of Tiger life is
>1. The cooling system is marginal. Especially a stock one.
>
>Two things make it marginal.
>1. Radiator size. If you compare a tiger core to any other car that uses a
>Small Block Ford you will see that they are all 20 to 50 percent larger.
>2. Lousy air flow patterns through the radiator and engine compartment.
>I have a fiberglass LAT hood on my Tiger. At 70 mph the corners of the hood
>are flexed up almost an inch from the air pressure under the hood. Just
>reving the engine at a light will make the corners flex. That air pressure
>buildup restricts the amount of air the can flow through the radiator.
>
>No lets discuss your temp readings. I will assume that your system is
>working and calibrated. Others have told you why that assumption may not be
>valid, so check it out.
>Since you are not complaining about boiling over just inquiring about temp
>reading differences , I think my assumption is valid.
>
>What temp rating is your thermostat? It most likely a 180 (what I use) or
>160.
>If it is either of these a temp reading around 200 means that the thermostat
>is wide open. Once the stat is wide open the water temp will vary quickly
>with any change in airflow or hp output.
>My car does pretty much what yours does. It sits at 195 in town or on the
>road at 55-60.
>The faster I go, the hotter it runs. At 80 it runs about 220. I know my
>gage is accurate, I have compared it to a thermocouple mounted in the
>radiator tank and an Infrared thermometer. They all agreed within 3 degrees
>or so.
>
>Erich
>
>
>
--
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Steve Laifman
Editor - TigersUnited.com
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