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I know this has been a long running problem for you. And as time moves on I=
can=E2=80=99t remember what has or hasn=E2=80=99t been said. Aside from th=
e obvious (clogged radiator/engine, blades eroded off water pumps, air pock=
ets etc.) there have been other causes of high temperature readings:
1. There might not actually be a problem with the cooling. Rather the volta=
ge regulator for the temp gauge may be defective and causing a higher than =
actual reading.
2. The lower radiator hose collapses. This typically happens as the rpm=E2=
=80=99s increase (so not an =E2=80=9Cat idle=E2=80=9D issue) the lower hose=
sucks in and pinches flow. A stainless steel spring set internal to the ho=
se (many source this from a lawn sprinkler) prevents the collapse.
The blocking plates and other means of preventing hot air recirculation are=
helpful. I=E2=80=99ve seen a flat sheet of aluminum between the lower sec=
tion of the grill area and the radiator. My understanding of the air dam i=
s that it is more effective at speed. I was told it generates a negative ai=
r pressure to draw air from the engine compartment. I truly believe a shro=
ud 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 d=
rawn externally. As noted others have found an electric pusher fan helpful.=
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 ope=
nings and proposed air dam areas etc. A few well placed homemade man-o-mete=
rs might be informative too.
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 wi=
th a stock cooling system (and sometimes performance enhancements to the en=
gine) 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 know=
n to Tigerdom and they constantly have issues.
In the end I hope you are successful and enjoy a the summer driving your no=
w running cool Tiger.
From: Joel Martin via Tigers
Sent: Tuesday, June 18, 2019 9:04 AM
To: Tiger List Serve
Subject: [Tigers] Tiger Overheating =E2=80=93 Shotgun Approach
After about a year of struggling with overheating at idle with the hood dow=
n, I took drastic steps. I have been driving the car during the last year =
only on back roads with no chance of traffic lights.
1.. Purchased and installed SS gloss black radiator overflow tank.
2.. Purchased and installed overflow tank straps from Alexander Washick a=
lw6464@gmail.com which are powder coated.
3.. Purchased and installed undersize water pump pulley from Robert Strag=
han <rgstraghan@yahoo.ca> scuffed, primed and painted semi gloss black
4.. Purchased and installed horn hole block plates from Don Lutjen <dlutj=
en55@gmail.com> scuffed, primed and painted semi gloss black.
5.. Purchased and installed new taller Tiger aluminum cross flow side tan=
k radiator from Griffin Radiator.
6.. Purchased and installed new Flow Kooler water pump BRA-1680 painted F=
ord dark blue to match engine replacing SS water pump, pressed hub to line =
up.
7.. Modified the mechanical fan spacer so that front of fan is 1=E2=80=9D=
from radiator.
8.. Mechanical fan remains Flex-a-lite 14=E2=80=9D nylon 6 blade fan.
9.. Purchased and installed new SS lower radiator and overflow to radiato=
r hoses.
10.. New top radiator hose from local source as SS hose would not fit tal=
ler radiator.
11.. New fan belt.
12.. 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. Stripped, primed and painted used shroud semi gloss bl=
ack =E2=80=93 sitting on shelf.
13.. Installed 160 degree thermostat.
So at this point I do not have a fan shroud =E2=80=93 unless make up a cust=
om. 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 pla=
y out this summer.
Results as follows:
Cold start with 86 degree ambient outside temperature =E2=80=93 at idle wit=
h hood closed, car in sun.
5 Minutes engine temperature 174 degrees.
9 Minutes engine temperature 180 degrees.
12 Minutes engine temperature 190 degrees.
14 Minutes engine temperature 195 degrees.
16 Minutes engine temperature 200 degrees.
Run the motor at 1500 rpm=E2=80=99s for 1minute temperature drops to 196 de=
grees.
Run the motor at 2000 rpm=E2=80=99s for another 1minute temperature drops t=
o 194 degrees.
Turn motor off and in a total of 27 minutes from startup - heat soak is 208=
degrees.
All this is recorded from temporary mechanical temperature gauge located un=
der dash.
The car temperature at any speed is at 174 degrees regardless of the outsid=
e ambient temperature from 50=E2=80=99s to mid 90=E2=80=99s.
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. The Tiger=E2=80=99s =
first major outing was at the Sandhills Motoring Festival held in Pinehurst=
NC last month in May =E2=80=93 you can get a glimpse of the cars at: http=
s://www.thepilot.com/gallery/concours-in-the-village/collection_d49fdacc-80=
91-11e9-86df-2b8021a08259.html You might have to copy and paste link into =
your browser.
Thank you all for putting up with all my inane questions and comments over =
the years. I am sure there will be more.
Regards
Joel Martin
---------------------------------------------------------------------------=
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Archive: http://www.team.net/pipermail/tigers http://autox.team.net/archive=
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charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
<HTML><HEAD></HEAD>
<BODY dir=3Dltr>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: #000000">
<DIV>I know this has been a long running problem for you. And as time moves=
on I
can=E2=80=99t remember what has or hasn=E2=80=99t been said. Aside from the=
obvious (clogged
radiator/engine, blades eroded off water pumps, air pockets etc.) there hav=
e
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 rp=
m=E2=80=99s
increase (so not an =E2=80=9Cat idle=E2=80=9D issue) the lower hose sucks i=
n and pinches flow. A
stainless steel spring set internal to the hose (many source this from a la=
wn
sprinkler) prevents the collapse.</DIV>
<DIV> </DIV>
<DIV>The blocking plates and other means of preventing hot air recirculatio=
n are
helpful. I=E2=80=99ve seen a flat sheet of aluminum between the lower=
section of
the grill area and the radiator. My understanding of the air dam is t=
hat
it is more effective at speed. I was told it generates a negative air press=
ure
to draw air from the engine compartment. I truly believe a shroud wou=
ld be
very helpful. Otherwise to some extent you are simply churning hot air alre=
ady
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 interestin=
g 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 open=
ings
and proposed air dam areas etc. A few well placed homemade man-o-meters mig=
ht be
informative too.</DIV>
<DIV> </DIV>
<DIV>Then there are the arguments as to whether a high flow water pump pull=
s 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 peopl=
e
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 yo=
ur
now running cool Tiger.</DIV>
<DIV
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; F=
ONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'>
<DIV style=3D"FONT: 10pt tahoma">
<DIV><FONT size=3D3 face=3DCalibri></FONT> </DIV>
<DIV style=3D"BACKGROUND: #f5f5f5">
<DIV style=3D"font-color: black"><B>From:</B> <A title=3Dtigers@autox.team.=
net
href=3D"mailto:tigers@autox.team.net";>Joel Martin via Tigers</A> </DIV>
<DIV><B>Sent:</B> Tuesday, June 18, 2019 9:04 AM</DIV>
<DIV><B>To:</B> <A title=3Dtigers@autox.team.net
href=3D"mailto:tigers@autox.team.net";>Tiger List Serve</A> </DIV>
<DIV><B>Subject:</B> [Tigers] Tiger Overheating =E2=80=93 Shotgun
Approach</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; F=
ONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'>
<DIV class=3Dyahoo-style-wrap
style=3D"FONT-SIZE: 16px; FONT-FAMILY: garamond, new york, times, serif">
<DIV>
<DIV>After about a year of struggling with overheating at idle with the hoo=
d
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=3Dydp4ac9ecb0MsoNormal> </P>
<OL style=3D"LIST-STYLE-POSITION: inside; MARGIN-TOP: 0in" type=3D1>
<LI class=3Dydp4ac9ecb0MsoNormal>Purchased and installed SS gloss black r=
adiator
overflow tank.
<LI class=3Dydp4ac9ecb0MsoNormal>Purchased and installed overflow tank st=
raps
from <SPAN class=3Dydp4ac9ecb0dfrtlirtlidzssg>Alexander Washick</SPAN><SP=
AN
class=3Dydp4ac9ecb0uncz1vrpvf> <A href=3D"mailto:alw6464@gmail.com"; =
rel=3Dnofollow target=3D_blank>alw6464@gmail.com</A> which are powder
coated.</SPAN>
<LI class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>Purc=
hased and
installed undersize water pump pulley from </SPAN><SPAN
class=3Dydp4ac9ecb0dfrtlirtlidzssg>Robert Straghan</SPAN><SPAN
class=3Dydp4ac9ecb0uncz1vrpvf> <rgstraghan@yahoo.ca> scuffed, prime=
d and
painted semi gloss black</SPAN>
<LI class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>Purc=
hased and
installed horn hole block plates from </SPAN><SPAN
class=3Dydp4ac9ecb0dfrtlirtlidzssg>Don Lutjen</SPAN><SPAN
class=3Dydp4ac9ecb0uncz1vrpvf> <dlutjen55@gmail.com> scuffed, prime=
d and
painted semi gloss black.</SPAN>
<LI class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>Purc=
hased and
installed new taller Tiger aluminum cross flow side tank radiator from Gr=
iffin
Radiator.</SPAN>
<LI class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>Purc=
hased and
installed new Flow Kooler water pump BRA-1680 painted Ford dark blue to m=
atch
engine replacing SS water pump, pressed hub to line up.</SPAN>
<LI class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>Modi=
fied the
mechanical fan spacer so that front of fan is 1=E2=80=9D from radiator.</=
SPAN>
<LI class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>Mech=
anical
fan remains Flex-a-lite 14=E2=80=9D nylon 6 blade fan.</SPAN>
<LI class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>Purc=
hased and
installed new SS lower radiator and overflow to radiator hoses.</SPAN>
<LI class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>New =
top
radiator hose from local source as SS hose would not fit taller
radiator.</SPAN>
<LI class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>New =
fan
belt.</SPAN>
<LI class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>Purc=
hased and
refurbished original Tiger fan shroud which would not fit as I did not wa=
nt to
cut a original shroud top mounting bracket to fit my taller
radiator.<SPAN> </SPAN>Stripped, primed and painted used shroud sem=
i
gloss black =E2=80=93 sitting on shelf.</SPAN>
<LI class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>Inst=
alled 160
degree thermostat.</SPAN></LI></OL>
<P class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>So at t=
his point
I do not have a fan shroud =E2=80=93 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=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>Results=
as
follows:</SPAN></P>
<P class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>Cold st=
art with
86 degree ambient outside temperature =E2=80=93 at idle with hood closed, c=
ar in
sun.</SPAN></P>
<P class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>5 Minut=
es engine
temperature 174 degrees.</SPAN></P>
<P class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>9 Minut=
es engine
temperature 180 degrees.</SPAN></P>
<P class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>12 Minu=
tes
engine temperature 190 degrees.</SPAN></P>
<P class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>14 Minu=
tes
engine temperature 195 degrees.</SPAN></P>
<P class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>16 Minu=
tes
engine temperature 200 degrees.</SPAN></P>
<P class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>Run the=
motor at
1500 rpm=E2=80=99s for 1minute temperature drops to 196 degrees.</SPAN></P>=
<P class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>Run the=
motor at
2000 rpm=E2=80=99s for another 1minute temperature drops to 194 degrees.</S=
PAN></P>
<P class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>Turn mo=
tor off
and in a total of 27 minutes from startup - heat soak is 208 degrees.</SPAN=
></P>
<P class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>All thi=
s is
recorded from temporary mechanical temperature gauge located under
dash.</SPAN></P>
<P class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>The car=
temperature at any speed is at 174 degrees regardless of the outside ambien=
t
temperature from 50=E2=80=99s to mid 90=E2=80=99s.</SPAN></P>
<P class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>Whew, m=
aybe 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=E2=80=99s fir=
st major
outing was at the Sandhills Motoring Festival held in Pinehurst NC last mon=
th in
May =E2=80=93 you can get a glimpse of the cars at:<SPAN> </SPAN><A
href=3D"https://www.thepilot.com/gallery/concours-in-the-village/collection=
_d49fdacc-8091-11e9-86df-2b8021a08259.html"
rel=3Dnofollow
target=3D_blank>https://www.thepilot.com/gallery/concours-in-the-village/co=
llection_d49fdacc-8091-11e9-86df-2b8021a08259.html</A><SPAN>
</SPAN>You might have to copy and paste link into your browser.</SPAN></P>
<P class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>Thank y=
ou all
for putting up with all my inane questions and comments over the years.&nbs=
p; I
am sure there will be more.<BR></SPAN></P>
<P class=3Dydp4ac9ecb0MsoNormal><SPAN
class=3Dydp4ac9ecb0uncz1vrpvf>Regards</SPAN></P>
<P class=3Dydp4ac9ecb0MsoNormal><SPAN class=3Dydp4ac9ecb0uncz1vrpvf>Joel
Martin</SPAN></P>
<P class=3Dydp4ac9ecb0MsoNormal> </P>
<P class=3Dydp4ac9ecb0MsoNormal> </P>
<P class=3Dydp4ac9ecb0MsoNormal><SPAN
class=3Dydp4ac9ecb0uncz1vrpvf></SPAN> </P>
<P class=3Dydp4ac9ecb0MsoNormal><SPAN
class=3Dydp4ac9ecb0uncz1vrpvf></SPAN> </P>
<P class=3Dydp4ac9ecb0MsoNormal> </P></DIV>
<DIV> </DIV></DIV></DIV>
<P>
<HR>
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