[TR] TR3A cooling, more

[David Lylis]

I thought I would close out this post with the latest that I have found and
cured.
1.  The "high efficiency" electric fan had no real obvious indication of
which way the blades should face, although there were clear instructions for
reversing the fan from a puller to a pusher by the wiring.  I pulled the fan
out and low and behold there was a very discrete arrow on the fan blade that
indicated that, in addition to reversing the direction, the fan needed to be
turned over as well.  The brief, misspelled directions did not indicate
this.
2.  I took an old TR6 shroud and made the side shrouds for the TR3A.
All is better than it was before, even though it was pretty good after the
"spoiler".
3.  I have removed the vacuum advance hose from the dizzy and sucked on the
line and learned two things. 1.  The line is open to the front carb.  2.  It
tastes really awful.
I now have to figure out why I get no vacuum reading on the gauge.
Thanks to all.
David

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.