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You could try carefully draining all the Evans so that it could be =
preserved/reused. I spent $$$ on mine.
=20
Then you could test with water to gather data.=20
=20
If you want to return to Evans you can flush with a propylene glycol =
coolant like =E2=80=9CSierra=E2=80=9D. (Not too easy to get at your =
=E2=80=9Clocal=E2=80=9D parts store, Owain?) Then you could reinstall =
the Evans.
=20
bt
=20
From: Tigers <tigers-bounces@autox.team.net> On Behalf Of Owain Lloyd
Sent: Friday, July 2, 2021 1:27 PM
To: michael king <michael.s.king@gmail.com>
Cc: Tiger Talk List Tiger <tigers@autox.team.net>
Subject: Re: [Tigers] BMR radiator
=20
Will reply in more detail tomorrow - but that may be important. Thanks =
and good thinking.
=20
I forgot I also changed the lower hose because it was a bit chafed. =
Tried to install a sprinkler spring but it was a bit too stiff and I =
couldn=E2=80=99t get it fully in. So left it out. That said I =
wasn=E2=80=99t revving high. It=E2=80=99s super long geared and has so =
much power at 2500 rpm.
=20
I=E2=80=99m reluctant to try diluting with 50% water because =
there=E2=80=99s no turning back at that point. This engine has never =
seen water.
=20
On Fri, 2 Jul 2021 at 16:31, michael king <michael.s.king@gmail.com =
Owain,
=20
Were there any other changes you made when swapping the radiator out?
=20
Did you change the lower radiator hose? Does it have a spring in it to =
stop it collapsing and restricting at higher rpm? That will cause issues =
at speed but not idle=20
=20
The gauge being mechanical rules out usual sender/ earth issues.
=20
What depth is the core on the new rad v old one, maybe fan is to close =
to the radiator and not pulling properly ( though that should more be an =
idle issue than on the run )=20
=20
What is the fin density and how many cores... Maybe its not getting as =
much air passing cleanly through and not dissipating as well as the =
fluidyne.
=20
Do you run an electric fan? I once had my car overheat as i had the =
wires reversed and the fan was spinning reverse and pushing air away =
from the grill whwn i came on... But again....more an issue at idle.
On Friday, 2 July 2021, Owain Lloyd <owain.lloyd@gmail.com =
Fluidyne - right.
indeed. there is no pressure increase at that temperature with Evans. =
you can literally remove the cap with your bare hand. =20
the specific heat capacity isn't quite as good (it's hard to beat water =
after all), but the advantages in terms of lack of corrosion (and lack =
of expansion) are worth that for me.
the point is that i ran Evans before with the Dale rad and it never ran =
that hot. it was running fine at the high temp (I drove it home at that =
temp - no problems - fueling perfect) but it reaches a point where you =
just don't want the engine too hot. iron block, aluminium heads and =
pistons - the hotter it gets the more the expansion differences will =
become.
=20
On Fri, Jul 2, 2021 at 12:23 PM michael king <michael.s.king@gmail.com =
Hey Owain,
=20
Not sure about the BMR, but the Dales ones were actually Fluidyne =
radiators.=20
=20
The Griffin ones were a separate company and IIRC had the glued together =
cores.
=20
I hear different things about evans.. one of the things i have heard is =
that the coolant runs hotter, but that it doesn't boil, so i guess to =
ask:
Apart from it registering physically hotter, was it suffering any =
adverse effects?
Did it start vaporising the fuel?
Did it start running rough?
Did it puke the coolant?
=20
=20
=20
On Fri, 2 Jul 2021 at 17:54, Owain Lloyd via Tigers =
Last year my Dale A (Griffin?) radiator cracked and I replaced it with =
this one from BMR in the UK:
=20
https://www.motorsportradiators.co.uk/store/Sunbeam-Tiger-Aluminium-Radia=
tor-p146886570
Not really used the car since except a couple of short trips.
This week I was going to take the tiger out for a run over some mountain =
passes but after about 30 minutes, no traffic, it was running at well =
over 100C / ~230F. I returned home and checked everything over.
1. Full of fresh Evans waterless coolant. =20
2. gauge is mechanical
3. horn holes blocked, along with gap between rad and crossmember.
4. fan shroud in place with 13" flex fan on water pump hub.
5. doesn't overheat at idle even when left running for 30 minutes.
I've NEVER had a problem with overheating at speed before. the only =
issues I had were at idle or in traffic / slow speed but even those had =
been solved by all the above. engine is a 490hp 347, but wasn't a =
problem before.
everything is pointing at the BMR radiator just being a bit crap and not =
doing as good a job as the Dale rad. anyone running one of these?
=20
_______________________________________________
Archive: http://www.team.net/pipermail/tigers =
http://autox.team.net/archive
Unsubscribe: =
http://autox.team.net/mailman/options/tigers/michael.s.king@gmail.com
=20
--=20
Regards
Michael King
=20
=20
--=20
Regards
Michael King
=20
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vlink=3Dpurple style=3D'word-wrap:break-word'><div =
class=3DWordSection1><p class=3DMsoNormal>You could try carefully =
draining all the Evans so that it could be preserved/reused. I spent $$$ =
on mine.<o:p></o:p></p><p class=3DMsoNormal><o:p> </o:p></p><p =
class=3DMsoNormal>Then you could test with water to gather data. =
<o:p></o:p></p><p class=3DMsoNormal><o:p> </o:p></p><p =
class=3DMsoNormal>If you want to return to Evans you can flush with a =
propylene glycol coolant like =E2=80=9CSierra=E2=80=9D. (Not too easy to =
get at your =E2=80=9Clocal=E2=80=9D parts store, Owain?) Then you could =
reinstall the Evans.<o:p></o:p></p><p =
class=3DMsoNormal><o:p> </o:p></p><p =
class=3DMsoNormal>bt<o:p></o:p></p><p =
class=3DMsoNormal><o:p> </o:p></p><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b>From:</b> Tigers =
<tigers-bounces@autox.team.net> <b>On Behalf Of </b>Owain =
Lloyd<br><b>Sent:</b> Friday, July 2, 2021 1:27 PM<br><b>To:</b> michael =
king <michael.s.king@gmail.com><br><b>Cc:</b> Tiger Talk List =
Tiger <tigers@autox.team.net><br><b>Subject:</b> Re: [Tigers] BMR =
radiator<o:p></o:p></p></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><div><div><p =
class=3DMsoNormal>Will reply in more detail tomorrow - but that may be =
important. Thanks and good thinking.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p class=3DMsoNormal>I =
forgot I also changed the lower hose because it was a bit chafed. =
Tried to install a sprinkler spring but it was a bit too stiff and I =
couldn=E2=80=99t get it fully in. So left it out. That said =
I wasn=E2=80=99t revving high. It=E2=80=99s super long geared and =
has so much power at 2500 rpm.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>I=E2=80=99m reluctant to try diluting with 50% water =
because there=E2=80=99s no turning back at that point. This engine =
has never seen water.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div></div></div><div><div><div><=
div><p class=3DMsoNormal>On Fri, 2 Jul 2021 at 16:31, michael king =
<<a href=3D"mailto:michael.s.king@gmail.com"; =
target=3D"_blank">michael.s.king@gmail.com</a>> =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in =
6.0pt;margin-left:4.8pt;margin-right:0in'><p =
class=3DMsoNormal>Owain,<o:p></o:p></p><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Were there any other changes you made when swapping =
the radiator out?<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Did you change the lower radiator hose? Does it have a =
spring in it to stop it collapsing and restricting at higher rpm? That =
will cause issues at speed but not =
idle <o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>The gauge being mechanical rules out usual sender/ =
earth issues.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>What depth is the core on the new rad v old one, maybe =
fan is to close to the radiator and not pulling properly ( though that =
should more be an idle issue than on the run =
) <o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>What is the fin density and how many cores... Maybe =
its not getting as much air passing cleanly through and not dissipating =
as well as the fluidyne.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Do you run an electric fan? I once had my car overheat =
as i had the wires reversed and the fan was spinning reverse and pushing =
air away from the grill whwn i came on... But again....more an issue at =
idle.<o:p></o:p></p></div><div><p class=3DMsoNormal><br><br>On Friday, 2 =
July 2021, Owain Lloyd <<a href=3D"mailto:owain.lloyd@gmail.com"; =
target=3D"_blank">owain.lloyd@gmail.com</a>> =
wrote:<o:p></o:p></p><blockquote style=3D'border:none;border-left:solid =
#CCCCCC 1.0pt;padding:0in 0in 0in =
6.0pt;margin-left:4.8pt;margin-right:0in'><div><p =
class=3DMsoNormal>Fluidyne - right.<o:p></o:p></p><div><p =
class=3DMsoNormal>indeed. there is no pressure increase at that =
temperature with Evans. you can literally remove the cap with =
your bare hand. <o:p></o:p></p><div><p class=3DMsoNormal>the =
specific heat capacity isn't quite as good (it's hard to beat water =
after all), but the advantages in terms of lack of corrosion (and lack =
of expansion) are worth that for me.<o:p></o:p></p></div><div><p =
class=3DMsoNormal>the point is that i ran Evans before with the Dale rad =
and it never ran that hot. it was running fine at the high temp (I =
drove it home at that temp - no problems - fueling perfect) but it =
reaches a point where you just don't want the engine too hot. =
iron block, aluminium heads and pistons - the hotter it gets the =
more the expansion differences will =
become.<o:p></o:p></p></div></div></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><div><p class=3DMsoNormal>On =
Fri, Jul 2, 2021 at 12:23 PM michael king <<a =
href=3D"mailto:michael.s.king@gmail.com"; =
target=3D"_blank">michael.s.king@gmail.com</a>> =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in =
6.0pt;margin-left:4.8pt;margin-right:0in'><div><p class=3DMsoNormal>Hey =
Owain,<o:p></o:p></p><div><p =
class=3DMsoNormal><o:p> </o:p></p><div><p class=3DMsoNormal>Not =
sure about the BMR, but the Dales ones were actually Fluidyne =
radiators. <o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>The Griffin ones were a separate company and IIRC had =
the glued together cores.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p class=3DMsoNormal>I =
hear different things about evans.. one of the things i have =
heard is that the coolant runs hotter, but that it =
doesn't boil, so i guess to ask:<o:p></o:p></p></div><div><p =
class=3DMsoNormal>Apart from it registering physically hotter, was it =
suffering any adverse effects?<o:p></o:p></p></div><div><p =
class=3DMsoNormal>Did it start vaporising the =
fuel?<o:p></o:p></p></div><div><p class=3DMsoNormal>Did it start running =
rough?<o:p></o:p></p></div><div><p class=3DMsoNormal>Did it puke the =
coolant?<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div></div></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><div><p class=3DMsoNormal>On =
Fri, 2 Jul 2021 at 17:54, Owain Lloyd via Tigers <<a =
href=3D"mailto:tigers@autox.team.net"; =
target=3D"_blank">tigers@autox.team.net</a>> =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in =
6.0pt;margin-left:4.8pt;margin-right:0in'><div><p class=3DMsoNormal>Last =
year my Dale A (Griffin?) radiator cracked and I replaced it with this =
one from BMR in the UK:<br> <br><a =
href=3D"https://www.motorsportradiators.co.uk/store/Sunbeam-Tiger-Alumini=
um-Radiator-p146886570" =
target=3D"_blank">https://www.motorsportradiators.co.uk/store/Sunbeam-Tig=
er-Aluminium-Radiator-p146886570</a><br><br>Not really used the car =
since except a couple of short trips.<o:p></o:p></p><div><p =
class=3DMsoNormal><br>This week I was going to take the tiger out for a =
run over some mountain passes but after about 30 minutes, no traffic, it =
was running at well over 100C / ~230F. I returned home and checked =
everything over.<br><br>1. Full of fresh Evans waterless coolant. =
<br>2. gauge is mechanical<br>3. horn holes blocked, along with =
gap between rad and crossmember.<br>4. fan shroud in place with 13" =
flex fan on water pump hub.<br>5. doesn't overheat at idle even when =
left running for 30 minutes.<br><br>I've NEVER had a problem with =
overheating at speed before. the only issues I had were at =
idle or in traffic / slow speed but even those had been solved by =
all the above. engine is a 490hp 347, but wasn't a problem =
before.<br><br>everything is pointing at the BMR radiator just being a =
bit crap and not doing as good a job as the Dale rad. anyone =
running one of these?<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div></div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><br><br>__________________________________=
_____________<br><br><br><br><br><br><a =
href=3D"mailto:tigers@autox.team.net"; =
target=3D"_blank">tigers@autox.team.net</a><br><br><br><br><br><br>Donate=
: <a href=3D"http://www.team.net/donate.html"; =
target=3D"_blank">http://www.team.net/donate.html</a><br><br><br>Archive:=
<a href=3D"http://www.team.net/pipermail/tigers"; =
target=3D"_blank">http://www.team.net/pipermail/tigers</a> <a =
href=3D"http://autox.team.net/archive"; =
target=3D"_blank">http://autox.team.net/archive</a><br><br><br><br><br><b=
r>Unsubscribe: <a =
href=3D"http://autox.team.net/mailman/options/tigers/michael.s.king@gmail=
.com" =
target=3D"_blank">http://autox.team.net/mailman/options/tigers/michael.s.=
king@gmail.com</a><br><br><br><br><br><br><br><br><o:p></o:p></p></blockq=
uote></div><p class=3DMsoNormal><br clear=3Dall><o:p></o:p></p><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><p class=3DMsoNormal>-- =
<o:p></o:p></p><div><p class=3DMsoNormal>Regards<br><br>Michael =
King<o:p></o:p></p></div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><o:p> </o:p></p></blockquote></div><p=
class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><o:p> </o:p></p></blockquote></div><p=
class=3DMsoNormal style=3D'margin-bottom:12.0pt'><br><br>-- =
<br>Regards<br><br>Michael =
King<br><br><o:p></o:p></p></blockquote></div></div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><o:p> </o:p></p></div></div></body></=
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