<html><head></head><body><div class="ydp3a600384yahoo-style-wrap" style="font-family:garamond, new york, times, serif;font-size:16px;"><div>All<br><div><br><div><div><div>Thanks for the responses. I am personally PLEASED with the changes that I have made. 16 minutes at idle to reach 200 degrees or 11 minutes to go from 174 when running to 200 degrees, I think is pretty good, at least based on my previous experience with idle temps rising. This allows me to drive the car in most any and all conditions. <br><div><br>I guess from the responses you all do not think so - maybe I am missing something - would not be the first time. I do live out in the country with around only 90K people in the county so not much city driving.</div></div><div><br><div>The water pump upgrade was made more for reducing possible air cavitation or pockets of air than the higher flow of water.<br><div><br><div>No restrictor in upper hose at this point - tried in the past and removed it - did not seem to make a difference.<br>Running 50/50 green antifreeze and 16 psi cap. <br></div></div></div></div></div><div><br>Joel<br></div></div></div></div><div></div>
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On Tuesday, June 18, 2019, 2:01:11 PM EDT, tigers-request@autox.team.net <tigers-request@autox.team.net> wrote:
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<div><div dir="ltr">Send Tigers mailing list submissions to<br></div><div dir="ltr"> <a href="mailto:tigers@autox.team.net" rel="nofollow" target="_blank">tigers@autox.team.net</a><br></div><div dir="ltr"><br></div><div dir="ltr">To subscribe or unsubscribe via the World Wide Web, visit<br></div><div dir="ltr"> <a href="http://autox.team.net/mailman/listinfo/tigers" rel="nofollow" target="_blank">http://autox.team.net/mailman/listinfo/tigers</a><br></div><div dir="ltr">or, via email, send a message with subject or body 'help' to<br></div><div dir="ltr"> <a href="mailto:tigers-request@autox.team.net" rel="nofollow" target="_blank">tigers-request@autox.team.net</a><br></div><div dir="ltr"><br></div><div dir="ltr">You can reach the person managing the list at<br></div><div dir="ltr"> <a href="mailto:tigers-owner@autox.team.net" rel="nofollow" target="_blank">tigers-owner@autox.team.net</a><br></div><div dir="ltr"><br></div><div dir="ltr">When replying, please edit your Subject line so it is more specific<br></div><div dir="ltr">than "Re: Contents of Tigers digest..."<br></div>Today's Topics:<br><br> 1. Re: Tiger Overheating ? Shotgun Approach (Tom Witt)<br><div id="ydp2605580cymsg84374" class="ydp2605580cymsg9944149083"><div id="ydp2605580cyiv7361261624">
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<div>I know this has been a long running problem for you. And as time moves on I
can’t remember what has or hasn’t been said. Aside from the obvious (clogged
radiator/engine, blades eroded off water pumps, air pockets etc.) there have
been other causes of high temperature readings:</div>
<div> </div>
<div>1. There might not actually be a problem with the cooling. Rather the
voltage regulator for the temp gauge may be defective and causing a higher than
actual reading.</div>
<div> </div>
<div>2. The lower radiator hose collapses. This typically happens as the rpm’s
increase (so not an “at idle” issue) the lower hose sucks in and pinches flow. A
stainless steel spring set internal to the hose (many source this from a lawn
sprinkler) prevents the collapse.</div>
<div> </div>
<div>The blocking plates and other means of preventing hot air recirculation are
helpful. I’ve seen a flat sheet of aluminum between the lower section of
the grill area and the radiator. My understanding of the air dam is that
it is more effective at speed. I was told it generates a negative air pressure
to draw air from the engine compartment. I truly believe a shroud would be
very helpful. Otherwise to some extent you are simply churning hot air already
under the hood. A well fitting shroud would ensure air is drawn externally. As
noted others have found an electric pusher fan helpful.</div>
<div> </div>
<div>In this day and age of the GoPro camera I think it would be interesting to
to do the old school yarn application and observe what is actually going on
under the hood, under the car, and the external areas such as the horn openings
and proposed air dam areas etc. A few well placed homemade man-o-meters might be
informative too.</div>
<div> </div>
<div>Then there are the arguments as to whether a high flow water pump pulls hot
coolant out of the engine faster (good) or pushes it too fast through the
radiator (bad). Is coolant good because it raises the boiling point, or bad
because it is less efficient than straight water. There are the people
with a stock cooling system (and sometimes performance enhancements to the
engine) that claim they never have a heat issue in a hot climate and those in
cooler climates that have stock engines and every cooling enhancement known to
Tigerdom and they constantly have issues.</div>
<div> </div>
<div>In the end I hope you are successful and enjoy a the summer driving your
now running cool Tiger.</div>
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<div><b>From:</b> <a title="tigers@autox.team.net" href="mailto:tigers@autox.team.net" rel="nofollow" target="_blank">Joel Martin via Tigers</a> </div>
<div><b>Sent:</b> Tuesday, June 18, 2019 9:04 AM</div>
<div><b>To:</b> <a title="tigers@autox.team.net" href="mailto:tigers@autox.team.net" rel="nofollow" target="_blank">Tiger List Serve</a> </div>
<div><b>Subject:</b> [Tigers] Tiger Overheating – Shotgun
Approach</div></div></div>
<div> </div></div>
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<div>After about a year of struggling with overheating at idle with the hood
down, I took drastic steps.<span> </span>I have been driving the car
during the last year only on back roads with no chance of traffic lights.
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"> </p>
<ol style="LIST-STYLE-POSITION:inside;MARGIN-TOP:0in;list-style-position: inside;list-style-position: inside;list-style-position: inside;list-style-position: inside" type="1">
<li class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal">Purchased and installed SS gloss black radiator
overflow tank.
</li><li class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal">Purchased and installed overflow tank straps
from <span class="ydp2605580cyiv7361261624ydp4ac9ecb0dfrtlirtlidzssg">Alexander Washick</span><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf"> <a href="mailto:alw6464@gmail.com" rel="nofollow" target="_blank">alw6464@gmail.com</a> which are powder
coated.</span>
</li><li class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">Purchased and
installed undersize water pump pulley from </span><span class="ydp2605580cyiv7361261624ydp4ac9ecb0dfrtlirtlidzssg">Robert Straghan</span><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf"> <rgstraghan@yahoo.ca> scuffed, primed and
painted semi gloss black</span>
</li><li class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">Purchased and
installed horn hole block plates from </span><span class="ydp2605580cyiv7361261624ydp4ac9ecb0dfrtlirtlidzssg">Don Lutjen</span><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf"> <dlutjen55@gmail.com> scuffed, primed and
painted semi gloss black.</span>
</li><li class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">Purchased and
installed new taller Tiger aluminum cross flow side tank radiator from Griffin
Radiator.</span>
</li><li class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">Purchased and
installed new Flow Kooler water pump BRA-1680 painted Ford dark blue to match
engine replacing SS water pump, pressed hub to line up.</span>
</li><li class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">Modified the
mechanical fan spacer so that front of fan is 1” from radiator.</span>
</li><li class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">Mechanical
fan remains Flex-a-lite 14” nylon 6 blade fan.</span>
</li><li class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">Purchased and
installed new SS lower radiator and overflow to radiator hoses.</span>
</li><li class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">New top
radiator hose from local source as SS hose would not fit taller
radiator.</span>
</li><li class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">New fan
belt.</span>
</li><li class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">Purchased and
refurbished original Tiger fan shroud which would not fit as I did not want to
cut a original shroud top mounting bracket to fit my taller
radiator.<span> </span>Stripped, primed and painted used shroud semi
gloss black – sitting on shelf.</span>
</li><li class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">Installed 160
degree thermostat.</span></li></ol>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">So at this point
I do not have a fan shroud – unless make up a custom.<span> </span>Other
changes could make is front air dam and block front cross member to bottom of
radiator spacing but for now I am going to see how things play out this
summer.</span></p>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">Results as
follows:</span></p>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">Cold start with
86 degree ambient outside temperature – at idle with hood closed, car in
sun.</span></p>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">5 Minutes engine
temperature 174 degrees.</span></p>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">9 Minutes engine
temperature 180 degrees.</span></p>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">12 Minutes
engine temperature 190 degrees.</span></p>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">14 Minutes
engine temperature 195 degrees.</span></p>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">16 Minutes
engine temperature 200 degrees.</span></p>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">Run the motor at
1500 rpm’s for 1minute temperature drops to 196 degrees.</span></p>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">Run the motor at
2000 rpm’s for another 1minute temperature drops to 194 degrees.</span></p>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">Turn motor off
and in a total of 27 minutes from startup - heat soak is 208 degrees.</span></p>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">All this is
recorded from temporary mechanical temperature gauge located under
dash.</span></p>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">The car
temperature at any speed is at 174 degrees regardless of the outside ambient
temperature from 50’s to mid 90’s.</span></p>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">Whew, maybe at
last can enjoy car with a couple of things still outstanding to be able to drive
it out of town for any distance.<span> </span>The Tiger’s first major
outing was at the Sandhills Motoring Festival held in Pinehurst NC last month in
May – you can get a glimpse of the cars at:<span> </span><a href="https://www.thepilot.com/gallery/concours-in-the-village/collection_d49fdacc-8091-11e9-86df-2b8021a08259.html" rel="nofollow" target="_blank">https://www.thepilot.com/gallery/concours-in-the-village/collection_d49fdacc-8091-11e9-86df-2b8021a08259.html</a><span>
</span>You might have to copy and paste link into your browser.</span></p>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">Thank you all
for putting up with all my inane questions and comments over the years. I
am sure there will be more.<br></span></p>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">Regards</span></p>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf">Joel
Martin</span></p>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"> </p>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"> </p>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf"></span> </p>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"><span class="ydp2605580cyiv7361261624ydp4ac9ecb0uncz1vrpvf"></span> </p>
<p class="ydp2605580cyiv7361261624ydp4ac9ecb0MsoNormal"> </p></div>
<div> </div></div></div>
<p>
</p><hr>
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