[Tigers] Tigers Digest, Vol 15, Issue 218 (Shroud)

Tom Witt atwittsend at verizon.net
Sat Jul 2 17:13:09 MDT 2022 

Years ago I made this lower shroud. I can't remember if it went under or 
over the upper shroud. I have too much junk on top of this "Jackstand 
Queen" to go look but my guess would be on the "outside of." As you can 
see I drilled two holes to attach mounting bolts.  I know I gave it a 
lot of thought  so that was probably the most logical place to secure 
the two sections. The rest was rather tight as I recall. Purist may balk 
at drilling holes in an original shroud but they can easily be filled 
with weld and ground down should that be desirable.

On 7/2/2022 3:12 PM, James Lindner wrote:
> Jim
>
> Here is a pic of a lower shroud I bought years ago. Never put it on. 
> Not really sure how it is suppose to fit. I assume you attach to 
> existing shroud somehow.
>
> Jim L
>
> image0.jpeg
>
> Sent from my iPad
>
>> On Jul 2, 2022, at 5:42 PM, Jim D'Amelio via Tigers 
>> <tigers at autox.team.net> wrote:
>>
>> 
>> James,
>>
>> Would you happen to have any pictures of the lower shroud?
>>
>> Jim D
>>
>>
>>
>> Sent from my Galaxy
>>
>>
>> -------- Original message --------
>> From: JAMES ARMSTRONG via Tigers <tigers at autox.team.net>
>> Date: 7/2/22 3:14 PM (GMT-05:00)
>> To: tigers at autox.team.net
>> Subject: Re: [Tigers] Tigers Digest, Vol 15, Issue 218
>>
>> Hello
>> I met a Canadian guy, I believe from Québec at the 2000 TEAE United 
>> in Rockland Maine. He said he was fabricating Lower fan shrouds.  I 
>> stayed in touch, bought the device, had it installed on the Tiger and 
>> it works quite nicely.
>> My engine is a rebuilt 260 with a comp cam, Edelbrock F4B, 
>> PerTronics, and that’s it. A mild upgrade but the lower fan shroud 
>> does help. For really really hot days, I’ve got a Kenlow pusher fan 
>> and with everything I have no trouble
>>
>>
>>
>>
>> Sent from my iPhone
>>
>> > On Jul 2, 2022, at 12:05 PM, tigers-request at autox.team.net wrote:
>> >
>> > Send Tigers mailing list submissions to
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>> > than "Re: Contents of Tigers digest..."
>> >
>> >
>> > Today's Topics:
>> >
>> >   1. Re: Evans Waterless Cooling (Owain Lloyd)
>> >   2. Re: Evans Waterless Cooling (LARRY PAULICK)
>> >
>> >
>> > ----------------------------------------------------------------------
>> >
>> > Message: 1
>> > Date: Sat, 2 Jul 2022 16:29:17 +0200
>> > From: Owain Lloyd <owain.lloyd at gmail.com>
>> > To: Buck Trippel <bucktrippel at verizon.net>
>> > Cc: "Dr. T. Y. McDowell" <tym2 at comcast.net>, "Tiger's List"
>> > <tigers at autox.team.net>
>> > Subject: Re: [Tigers] Evans Waterless Cooling
>> > Message-ID:
>> > <CANE47iQLDVr=D_km8HR0ofZyQCG2soZ2fKYc2oBq9EpwUSgtoA at mail.gmail.com>
>> > Content-Type: text/plain; charset="utf-8"
>> >
>> > 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
>> >> _______________________________________________
>> >>
>> >> tigers at autox.team.net
>> >>
>> >> Donate: http://www.team.net/donate.html
>> >> Archive: http://www.team.net/pipermail/tigers
>> >> http://autox.team.net/archive
>> >>
>> >> Unsubscribe:
>> >> http://autox.team.net/mailman/options/tigers/owain.lloyd@gmail.com
>> >>
>> >>
>> >>
>> > -------------- next part --------------
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>> >
>> > ------------------------------
>> >
>> > Message: 2
>> > Date: Sat, 2 Jul 2022 11:35:56 -0400
>> > From: LARRY PAULICK <lpaulick1 at verizon.net>
>> > To: owain.lloyd at gmail.com
>> > Cc: Buck Trippel <bucktrippel at verizon.net>, "tigers at autox.team.net"
>> > <tigers at autox.team.net>
>> > Subject: Re: [Tigers] Evans Waterless Cooling
>> > Message-ID: <8EE82D37-2D80-4774-8AAA-C9B6AF6C080E at verizon.net>
>> > Content-Type: text/plain; charset="utf-8"
>> >
>> > 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 <mailto: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 
>> <mailto: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 
>> <mailto: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
>> >>
>> >> _______________________________________________
>> >>
>> >> tigers at autox.team.net <mailto:tigers at autox.team.net>
>> >>
>> >> Donate: http://www.team.net/donate.html 
>> <http://www.team.net/donate.html>
>> >> Archive: http://www.team.net/pipermail/tigers 
>> <http://www.team.net/pipermail/tigers> http://autox.team.net/archive 
>> <http://autox.team.net/archive>
>> >>
>> >> Unsubscribe: 
>> http://autox.team.net/mailman/options/tigers/owain.lloyd@gmail.com 
>> <http://autox.team.net/mailman/options/tigers/owain.lloyd@gmail.com>
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>> >>
>> >> _______________________________________________
>> >>
>> >> tigers at autox.team.net <mailto:tigers at autox.team.net>
>> >>
>> >> Donate: http://www.team.net/donate.html 
>> <http://www.team.net/donate.html>
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>> >
>> > End of Tigers Digest, Vol 15, Issue 218
>> > ***************************************
>>
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>>
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