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Just chiming in on the radiator hose. I have had that happen where the =
hose collapses under load. It doesn=E2=80=99t take much acceleration to =
make it collapse. I think that would be my first item on the to do list. =
I think auto parts stores sell em. It=E2=80=99s been years and my memory =
is a little fuzzy though. I do remember having to cut it down to size. =
Could be I bought a hose that had on in it and then modified it for my =
application. Good luck.
Cheers
Jim B.
> On Jul 2, 2021, at 1:26 PM, Owain Lloyd <owain.lloyd@gmail.com> wrote:
>=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.
>=20
>=20
> 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-Radiat=
or-p146886570 =
<https://www.motorsportradiators.co.uk/store/Sunbeam-Tiger-Aluminium-Radia=
tor-p146886570>
>=20
> Not really used the car since except a couple of short trips.
>=20
> 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.
>=20
> 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.
>=20
> 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.
>=20
> 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
>=20
>=20
> _______________________________________________
>=20
>=20
>=20
>=20
>=20
>=20
>=20
>=20
>=20
>=20
> Donate: http://www.team.net/donate.html =
<http://www.team.net/donate.html>
>=20
>=20
> Archive: http://www.team.net/pipermail/tigers =
<http://www.team.net/pipermail/tigers> http://autox.team.net/archive =
<http://autox.team.net/archive>
>=20
>=20
>=20
>=20
>=20
> Unsubscribe: =
http://autox.team.net/mailman/options/tigers/michael.s.king@gmail.com =
<http://autox.team.net/mailman/options/tigers/michael.s.king@gmail.com>
>=20
>=20
>=20
>=20
>=20
>=20
>=20
>=20
>=20
>=20
> --=20
> Regards
>=20
> Michael King
>=20
>=20
>=20
>=20
>=20
>=20
> --=20
> Regards
>=20
> Michael King
>=20
>=20
>=20
>=20
> _______________________________________________
>=20
> tigers@autox.team.net
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/pipermail/tigers =
http://autox.team.net/archive
>=20
> Unsubscribe: =
http://autox.team.net/mailman/options/tigers/jbsyv@yahoo.com
>=20
>=20
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Content-Transfer-Encoding: quoted-printable
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" class=3D""><span=
style=3D"font-size: 14px;" class=3D"">Just chiming in on the =
radiator hose. I have had that happen where the hose collapses under =
load. It doesn=E2=80=99t take much acceleration to make it =
collapse. I think that would be my first item on the to do list. I =
think auto parts stores sell em. It=E2=80=99s been years and =
my memory is a little fuzzy though. I do remember having to cut it down =
to size. Could be I bought a hose that had on in it and then modified it =
for my application. Good luck.</span><div class=3D""><span =
style=3D"font-size: 14px;" class=3D"">Cheers</span></div><div =
class=3D""><span style=3D"font-size: 14px;" class=3D"">Jim B.<br =
class=3D""></span><div><br class=3D""><blockquote type=3D"cite" =
class=3D""><div class=3D"">On Jul 2, 2021, at 1:26 PM, Owain Lloyd =
<<a href=3D"mailto:owain.lloyd@gmail.com"; =
class=3D"">owain.lloyd@gmail.com</a>> wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div class=3D""><div =
class=3D""><div dir=3D"auto" class=3D"">Will reply in more detail =
tomorrow - but that may be important. Thanks and good =
thinking.</div><div dir=3D"auto" class=3D""><br class=3D""></div><div =
dir=3D"auto" class=3D"">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.</div><div =
dir=3D"auto" class=3D""><br class=3D""></div><div dir=3D"auto" =
class=3D"">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.</div><div dir=3D"auto" class=3D""><br =
class=3D""></div></div></div><div class=3D""><div class=3D""><div =
class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Fri, 2 =
Jul 2021 at 16:31, michael king <<a =
href=3D"mailto:michael.s.king@gmail.com"; target=3D"_blank" =
class=3D"">michael.s.king@gmail.com</a>> wrote:<br =
class=3D""></div><blockquote class=3D"gmail_quote" style=3D"margin:0px =
0px 0px =
0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;borde=
r-left-color:rgb(204,204,204)">Owain,<div class=3D""><br =
class=3D""></div><div class=3D"">Were there any other changes you made =
when swapping the radiator out?</div><div class=3D""><br =
class=3D""></div><div class=3D"">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 </div><div =
class=3D""><br class=3D""></div><div class=3D"">The gauge being =
mechanical rules out usual sender/ earth issues.</div><div class=3D""><br =
class=3D""></div><div class=3D"">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 =
) </div><div class=3D""><br class=3D""></div><div class=3D"">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.</div><div class=3D""><br class=3D""></div><div class=3D"">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.</div><div =
class=3D""><br class=3D""><br class=3D"">On Friday, 2 July 2021, Owain =
Lloyd <<a href=3D"mailto:owain.lloyd@gmail.com"; target=3D"_blank" =
class=3D"">owain.lloyd@gmail.com</a>> wrote:<br class=3D""><blockquote =
class=3D"gmail_quote" style=3D"margin:0px 0px 0px =
0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;borde=
r-left-color:rgb(204,204,204)"><div dir=3D"ltr" class=3D"">Fluidyne - =
right.<div class=3D"">indeed. there is no pressure increase at =
that temperature with Evans. you can literally remove the cap =
with your bare hand. <div class=3D"">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.</div><div class=3D"">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.</div></div></div><br class=3D""><div class=3D"gmail_quote"><div =
dir=3D"ltr" class=3D"gmail_attr">On Fri, Jul 2, 2021 at 12:23 PM michael =
king <<a href=3D"mailto:michael.s.king@gmail.com"; target=3D"_blank" =
class=3D"">michael.s.king@gmail.com</a>> wrote:<br =
class=3D""></div><blockquote class=3D"gmail_quote" style=3D"margin:0px =
0px 0px =
0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;borde=
r-left-color:rgb(204,204,204)"><div dir=3D"ltr" class=3D"">Hey =
Owain,<div class=3D""><br class=3D""><div class=3D"">Not sure about the =
BMR, but the Dales ones were actually Fluidyne =
radiators. </div><div class=3D""><br class=3D""></div><div =
class=3D"">The Griffin ones were a separate company and IIRC had the =
glued together cores.</div><div class=3D""><br class=3D""></div><div =
class=3D"">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:</div><div class=3D"">Apart =
from it registering physically hotter, was it suffering any adverse =
effects?</div><div class=3D"">Did it start vaporising the =
fuel?</div><div class=3D"">Did it start running rough?</div><div =
class=3D"">Did it puke the coolant?</div><div class=3D""><br =
class=3D""></div><div class=3D""><br class=3D""></div></div></div><br =
class=3D""><div class=3D"gmail_quote"><div dir=3D"ltr" =
class=3D"gmail_attr">On Fri, 2 Jul 2021 at 17:54, Owain Lloyd via Tigers =
<<a href=3D"mailto:tigers@autox.team.net"; target=3D"_blank" =
class=3D"">tigers@autox.team.net</a>> wrote:<br =
class=3D""></div><blockquote class=3D"gmail_quote" style=3D"margin:0px =
0px 0px =
0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;borde=
r-left-color:rgb(204,204,204)"><div dir=3D"ltr" class=3D"">Last year my =
Dale A (Griffin?) radiator cracked and I replaced it with this one from =
BMR in the UK:<br class=3D""> <br class=3D""><a =
href=3D"https://www.motorsportradiators.co.uk/store/Sunbeam-Tiger-Aluminiu=
m-Radiator-p146886570" target=3D"_blank" =
class=3D"">https://www.motorsportradiators.co.uk/store/Sunbeam-Tiger-Alumi=
nium-Radiator-p146886570</a><br class=3D""><br class=3D"">Not really =
used the car since except a couple of short trips.<div =
class=3D""><br class=3D"">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 class=3D""><br class=3D"">1. Full of =
fresh Evans waterless coolant. <br class=3D"">2. gauge is =
mechanical<br class=3D"">3. horn holes blocked, along with gap between =
rad and crossmember.<br class=3D"">4. fan shroud in place with 13" flex =
fan on water pump hub.<br class=3D"">5. doesn't overheat at idle even =
when left running for 30 minutes.<br class=3D""><br class=3D"">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 class=3D""><br class=3D"">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?<br =
class=3D""></div><div class=3D""><br class=3D""></div></div><br =
class=3D""><br =
class=3D"">_______________________________________________<br =
class=3D""><br class=3D""><br class=3D""><br class=3D""><br class=3D""><br=
class=3D""><a href=3D"mailto:tigers@autox.team.net"; target=3D"_blank" =
class=3D"">tigers@autox.team.net</a><br class=3D""><br class=3D""><br =
class=3D""><br class=3D""><br class=3D""><br class=3D"">Donate: <a =
href=3D"http://www.team.net/donate.html"; rel=3D"noreferrer" =
target=3D"_blank" class=3D"">http://www.team.net/donate.html</a><br =
class=3D""><br class=3D""><br class=3D"">Archive: <a =
href=3D"http://www.team.net/pipermail/tigers"; rel=3D"noreferrer" =
target=3D"_blank" class=3D"">http://www.team.net/pipermail/tigers</a> <a =
href=3D"http://autox.team.net/archive"; rel=3D"noreferrer" =
target=3D"_blank" class=3D"">http://autox.team.net/archive</a><br =
class=3D""><br class=3D""><br class=3D""><br class=3D""><br class=3D""><br=
class=3D"">Unsubscribe: <a =
href=3D"http://autox.team.net/mailman/options/tigers/michael.s.king@gmail.=
com" rel=3D"noreferrer" target=3D"_blank" =
class=3D"">http://autox.team.net/mailman/options/tigers/michael.s.king@gma=
il.com</a><br class=3D""><br class=3D""><br class=3D""><br class=3D""><br =
class=3D""><br class=3D""><br class=3D""><br class=3D""><br =
class=3D""></blockquote></div><br clear=3D"all" class=3D""><div =
class=3D""><br class=3D""></div>-- <br class=3D""><div dir=3D"ltr" =
class=3D"">Regards<br class=3D""><br class=3D"">Michael King</div><br =
class=3D""><br class=3D""></blockquote></div><br class=3D""><br =
class=3D""></blockquote></div><br class=3D""><br class=3D"">-- <br =
class=3D"">Regards<br class=3D""><br class=3D"">Michael King<br =
class=3D""><br class=3D""><br class=3D""></blockquote></div></div><br =
class=3D""><br class=3D""></div>
_______________________________________________<br class=3D""><br =
class=3D""><a href=3D"mailto:tigers@autox.team.net"; =
class=3D"">tigers@autox.team.net</a><br class=3D""><br class=3D"">Donate: =
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