[TR] TR3A Overheating

[oliver]

I had a car with overheating problems, and ended up running with no 
thermostat whatsoever.  then the water pump gave out (or, it was so obvious 
that I finally noticed it).  after replacing it,  I immediately had problems 
with overheating on the freeway.  put a thermostat in it and all was good. 
moral of the story - before it finally dies, a water pump may only be 
working somewhat . . .

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From: <KingsCreekTrees at aol.com>
Sent: Thursday, July 14, 2011 7:25 PM
To: <willgray at vaxxine.com>; <triumphs at autox.team.net>
Subject: Re: [TR] TR3A Overheating

> Hi Dave;
>
> I'm not convinced an electric fan is going to cure the problem. If
> everything is as it should be, then in 85F weather the benefit of an 
> electric fan
> would be felt only when idling or inching in traffic.
>
> Having said all that, I had overheating problems with my TR3A last year. I
> was flushing the cooling system every couple of years and using 50/50
> coolant/water. However, it still ran too hot when at 60mph in hot weather. 
> Fine
> at 50mph, though, and too hot in traffic. I tried different thermostats 
> and
> all  sorts of adjustments.
>
> I finally gave up and put on every cooling system modification I could
> think of: Thicker radiator with no starting handle hole, upgraded TRF 
> water
> pump, TR6 fan conversion (which I prefer over the electric fan 
> conversion). I
> don't know which one of those things cured it, or maybe it was a
> combination of  both, but now the thing will warm up only in hot weather!
>
> I know you said the engine was rebuilt but could the water pump  be weak 
> or
> was it renewed?
>
> Tim
>
>
> In a message dated 14/07/2011 10:29:39 A.M. Eastern Daylight Time,
> willgray at vaxxine.com writes:
>
> During  the current spell of 85F + weather recently I took my recently
> rebuilt 3A  out for its first experience of hot weather. It duly duly
> proceeded to  stall whenever I let the revs drop too low when pulling.
> I had to let it  sit and cool for five or ten minutes each time before
> it would start  again.
>
> I assume this was due to overheating (temp gauge was  showing 200F),
> and my next move has to involve installing an electric  fan?
>
> Dave
> -- 
> David Willett and Carol Gray,
> 331 Gage  Street, Box 773,
> Niagara-on-the-Lake, ON
> L0S  1J0
>
> Fax: 905 468 3007
> Ph: 905 468 0608
> E-Mail;  willgray at vaxxine.com