[Tigers] Evans Waterless Cooling

Sat Jul 2 22:11:22 MDT 2022

Buck, I live in the southern alps :)
40 Celsius and 2500m.  But was doing the same at normal temps and altitudes.

Il giorno sab 2 lug 2022 alle 22:13 Buck Trippel <bucktrippel at verizon.net>
ha scritto:

> Owain, have you encountered either high outside air temps or high
> altitudes when using Evans in your Tiger?
>
>
>
> Buck
>
>
>
> *From:* Owain Lloyd <owain.lloyd at gmail.com>
> *Sent:* Saturday, July 2, 2022 8:42 AM
> *To:* LARRY PAULICK <lpaulick1 at verizon.net>
> *Cc:* Buck Trippel <bucktrippel at verizon.net>; tigers at autox.team.net
> *Subject:* Re: [Tigers] Evans Waterless Cooling
>
>
>
> Assuming all those things are done, evans is still not quite up to the job
> in my car.  Most of those cooling tricks are for slow moving car.  My car
> ran too hot even at speed with evans and the less than perfect radiator.
> As I said, with a better radiator or with water instead it is fine.
>
>
>
> My reason for preferring brass is that it can be easily soldered.  I
> struggled on for a long time with my brass radiator but eventually it was
> just too stress fatigued and needed frequent repair.  If I could get a new
> brass one I would certainly prefer that.
>
>
>
> Il giorno sab 2 lug 2022 alle 17:36 LARRY PAULICK <lpaulick1 at verizon.net>
> ha scritto:
>
> Another issue is aluminum versus brass radiators.  Aluminum radiators are
> lighter but  brass transfers heat more efficiently.
>
>
>
> When I redid my tiger, I used a three row versus a stock two row brass
> retaining the top, bottom, and sides so that the fit was not affected.
>
>
>
> Also if you're replacing or having overheating problems, a closed impeller
> type water pump is much more efficient. Some aftermarket companies sell
> them already set up this way, but you can buy just the impeller plate from
> Summit for a very low price and install it yourself. Pumping efficiency is
> greatly improved.
>
>
>
> TEAE did a study many years ago on all aspects of cooling. This excellent
> engineering study is still applicable today and well worth reading,
> dispelling a lot of myths.
>
>
>
> Another design problem with the tiger is that there is no lower portion of
> the fan shroud. As a result, hot air is removed from the radiator then goes
> down to the ground and circles back through the front of the radiator, at
> rest.
>
>
>
> I know this for a fact since I did smoke test and watched the air
> recirculating.
>
>
>
> I fabricated a lower fan shroud from sheet metal, and made a low cost
> plastic air dam that comes down about 4 inches, to help the flow of air
> through the radiator and continue towards the rear of the car while in
> motion.
>
>
>
> Bottom line it all works and I don't overheat.
>
>
>
> I have to laugh at the commentos who keeps saying that the V8 takes up so
> much space that that's why they overheat. Just look at today's cars and how
> they fill the engine bay and it becomes apparent this is another myth.
>
>
>
> On Jul 2, 2022, at 10:29 AM, Owain Lloyd <owain.lloyd at gmail.com> wrote:
>
>
>
> Yep.  I run in most cars with no problems but in the tiger with the 500hp
> motor I needed every bit of efficiency possible so had to switch off even
> back to water and antifreeze.  It worked sort of ok with the dale radiator
> but then I switched to another brand radiator and it just couldn’t keep the
> temps down.   Pretty sure it would be doable with an efficient and lower
> power motor if all the other cooling problems were taken care of.
>
>
>
> Il giorno sab 2 lug 2022 alle 16:05 Buck Trippel via Tigers <
> tigers at autox.team.net> ha scritto:
>
> In August of the hot summer of 2019 (aren’t they all hot now?) I put Evans
> in a Tiger which has an excellent two row aluminum radiator in front of a
> rather stock 289. My wife and I put the Tiger through an almost 5-thousand
> mile road test by driving from Los Angeles to La Crosse via I80/I90 to
> attend the TEAE United and then Route 66 on the way home. Temperatures were
> frequently at 100 degrees. So it got quite a test.
>
>
>
> The Evans did not boil but with hot outside air temperatures its inferior
> specific heat (to water) could not remove adequately remove the engine
> heat.
>
>
>
> The carb got so hot the fuel percolated (boiled) inside the bowls and the
> engine stalled lean. This weakness was exacerbated at altitudes above
> 4-thousand feet. In Pueblo, with OATs near 100 I ended up on the same AAA
> tow truck twice on the same day. I then gave up and reluctantly drained
> maybe half of the the costly coolant out, replacing it with plain water so
> I could get home. However the percolation reoccurred crossing the Mojave in
> the 115 degree August temps. At home I replaced the Evans with water,
> adding Water Wetter for corrosion protection.
>
>
>
> I don’t have the numbers off the top of my head but the specific heat (or
> ability to transfer heat) of water is 1.00 while Evans is something like
> .65 or only 2/3 that of water. For me, Evans just did not do the job. From
> my experience I’d say one would have to be exceptionally brave to use it,
> especially with a stock radiator system or with a more powerful engine
> which will place even more demand on the Tiger’s weak cooling system. (BTW
> in the Tiger we drove on that trip, we had removed the stock block under
> the carb that hot radiator fluid passes through which probably have made
> even more of a problem.)
>
>
>
> Buck Trippel
>
> Ps I wrote up some of this years ago and I believe it contained a more
> detailed account of Evans heating issues on the trip – I think it was
> published in both the TEAE and CAT newletters.
>
>
>
>
>
> *From:* Tigers <tigers-bounces at autox.team.net> *On Behalf Of *Dr. T. Y.
> McDowell
> *Sent:* Saturday, July 2, 2022 5:06 AM
> *To:* Tiger's List <tigers at autox.team.net>
> *Subject:* [Tigers] Evans Waterless Cooling
>
>
>
> Is anyone out there in Tigerland using Evans Waterless Coolant?
>
> It has a boiling point of 375 (F).  I'd like to hear from anyone who's
> using it as I'm considering it.
>
>
>
> Thanks in advance,
>
>
>
> Tym McDowell
>
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