At 09:26 AM 5/18/98 CDT, Richard Triplett wrote:
>
>I didn't realize what a firestorm I was creating by suggesting the
>thermostat should not be removed in order to solve overheating problems.
>When I stated that water could flow too fast for proper heat transfer, I
>was using data gathered from a hydraulics course I had recently completed.
>In that course the instructor stated that flow rate through a heat
>exchanger should be reduced in order for proper heat transfer to take place,
> but he was referring to a system where a reservoir was used for excess oil
>storage. In actual practice, in a closed loop circuit such as an engine
>cooling system, flow could probably not exceed maximum efficiency, making
>my statement a moot point. I still stand by my statement that removing a
>good thermostat in order to try to fix an overheating problem is a bad idea,
> because, sure, it may appear to run cooler, but if there are fundamental
>problems with the cooling system, it will still overheat when stressed, ie,
>on long idle & hot days, etc. Then you have the problem of cold days when
>the engine does not reach optimum operating temperature, the heater doesn't
>work, and fuel efficiency is reduced. You're not doing your engine any
>favors by running it below its most efficient temperature. May I leave the
>corner now?
>
>Richard Triplett
>62 TR3A
>78 Spitfire
>85 XJ6
>
> Hello Richard and all
The yearly overheating arguments are raging, it must be spring. If
you think it is bad here then you need to check out the Tiger group, they
have been hot for a month.
I agree with your revised statments, However the TR3-4 cooling
system is different than all the others in that it has a third passsageway
(bypass) in the thermostat housing. With the stock (skirted) thermostat
removed there will be a portion (1/4) of the heated engine water that will
go directly back into the engine without passing thru the radiator. All the
more reason for keeping the proper thermostat in your TR3.
PS The late model electric fan, cat-converter MGBs are
overheating too.
Sam Haynes TR3 Original Owner
66 Tiger
MGA 59
100-4
TVR 2500
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