[TR] TR3A cooling, more

[Brian Jones]

David, when running at 80 mph (my guesstimate on 3200 rpm, 4th gear, with
22% overdrive) it isn't really surprising that you are getting warmth, if
anything is off.

   - Are you using the best fuel available (92 or 93 octane)?
   - Are your plugs dusty beige/grey? Check richness settings. Lean is not
   good, it creates heat in the engine.
   - How well set is your timing? This could be a source of warmth too, if
   off.

Do install a full shroud to the rad. Air and water work in partnership to
cool your engine. Why cool the car's horns and your washer bottle with an 80
mph breeze when you could direct that airflow through the rad?

Last: did you backflush the rad and block?

Hope this helps,

Brian

On Tue, Jun 23, 2009 at 12:30 PM, David Lylis <dlylis at gmail.com> wrote:

> I found an odd thing; maybe not so odd, about my temp situation.  It
> appeared that the slower I go the cooler the motor seems to run, by about
> 10
> degrees.  I decided to use my ruminator to see if I could put it to use to
> figure this out.  I have tested this twice now and lets see what others
> think.  If I am in OD at 3200 rpms my temp runs up to 190 +.  Then, I drove
> around for about 5 miles at 3200 rpms, but in second and third gear.  180 -
> 185.  Hmmm, thinks I.  The shroud on each side of my radiator is missing.
> Is it possible that as I increase speed the air flow bypassing the radiator
> increases the pressure in the engine bay therefore slowing the flow of air
> from front to back through the radiator?  I didn't know that the shrouds
> were suposed to be there as the other two 3As that I am familiar with do
> not
> have them either.  I looked at another car that is original and it has
> them.
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