--===============1866584692291633770==
--000000000000e3313705c629c6e0
Content-Transfer-Encoding: quoted-printable
Will reply in more detail tomorrow - but that may be important. Thanks and
good thinking.
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.
I=E2=80=99m reluctant to try diluting with 50% water because there=E2=80=99=
s no turning
back at that point. This engine has never seen water.
On Fri, 2 Jul 2021 at 16:31, michael king <michael.s.king@gmail.com> wrote:
> Owain,
>
> Were there any other changes you made when swapping the radiator out?
>
> 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
>
> The gauge being mechanical rules out usual sender/ earth issues.
>
> 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 idl=
e
> issue than on the run )
>
> 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.
>
> 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> wrote:
>
>> Fluidyne - right.
>> indeed. there is no pressure increase at that temperature with Evans.
>> you can literally remove the cap with your bare hand.
>> 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 o=
f
>> 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 j=
ust
>> don't want the engine too hot. iron block, aluminium heads and pistons =
-
>> the hotter it gets the more the expansion differences will become.
>>
>> On Fri, Jul 2, 2021 at 12:23 PM michael king <michael.s.king@gmail.com>
>> wrote:
>>
>>> Hey Owain,
>>>
>>> Not sure about the BMR, but the Dales ones were actually Fluidyne
>>> radiators.
>>>
>>> The Griffin ones were a separate company and IIRC had the glued togethe=
r
>>> cores.
>>>
>>> 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 a=
sk:
>>> 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?
>>>
>>>
>>>
>>> On Fri, 2 Jul 2021 at 17:54, Owain Lloyd via Tigers <
>>> tigers@autox.team.net> wrote:
>>>
>>>> Last year my Dale A (Griffin?) radiator cracked and I replaced it with
>>>> this one from BMR in the UK:
>>>>
>>>>
>>>> https://www.motorsportradiators.co.uk/store/Sunbeam-Tiger-Aluminium-Ra=
diator-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.
>>>> 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 ha=
d
>>>> been solved by all the above. engine is a 490hp 347, but wasn't a pro=
blem
>>>> 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?
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> tigers@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/michael.s.king@gmail.com
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>> --
>>> Regards
>>>
>>> Michael King
>>>
>>>
>>>
>>
>>
>
> --
> Regards
>
> Michael King
>
>
>
--000000000000e3313705c629c6e0
Content-Transfer-Encoding: quoted-printable
<div><div><div dir=3D"auto">Will reply in more detail tomorrow - but that m=
ay be important.=C2=A0 Thanks and good thinking.</div><div dir=3D"auto"><br=
></div><div dir=3D"auto">I forgot I also changed the lower hose because it =
was a bit chafed.=C2=A0 Tried to install a sprinkler spring but it was a bi=
t too stiff and I couldn=E2=80=99t get it fully in.=C2=A0 So left it out.=
=C2=A0 That said I wasn=E2=80=99t revving high.=C2=A0 It=E2=80=99s super lo=
ng geared and has so much power at 2500 rpm.</div><div dir=3D"auto"><br></d=
iv><div dir=3D"auto">I=E2=80=99m reluctant to try diluting with 50% water b=
ecause there=E2=80=99s no turning back at that point.=C2=A0 This engine has=
never seen water.</div><div dir=3D"auto"><br></div></div></div><div><div><=
div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Fri, 2 J=
ul 2021 at 16:31, michael king <<a href=3D"mailto:michael.s.king@gmail.c=
om" target=3D"_blank">michael.s.king@gmail.com</a>> wrote:<br></div><blo=
ckquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left=
-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(2=
04,204,204)">Owain,<div><br></div><div>Were there any other changes you mad=
e when swapping the radiator out?</div><div><br></div><div>Did you change t=
he lower radiator hose? Does it have a spring in it to stop it collapsing a=
nd restricting at higher rpm? That will cause issues at speed but not idle=
=C2=A0</div><div><br></div><div>The gauge being mechanical rules out usual =
sender/ earth issues.</div><div><br></div><div>What depth is the core on th=
e 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 )=C2=A0=
</div><div><br></div><div>What is the fin density and how many cores... May=
be its not getting as much air passing cleanly through and not dissipating =
as well as the fluidyne.</div><div><br></div><div>Do you run an electric fa=
n? I once had my car overheat as i had the wires reversed and the fan was s=
pinning reverse and pushing air away from the grill whwn i came on... But a=
gain....more an issue at idle.</div><div><br><br>On Friday, 2 July 2021, Ow=
ain Lloyd <<a href=3D"mailto:owain.lloyd@gmail.com"; target=3D"_blank">ow=
ain.lloyd@gmail.com</a>> wrote:<br><blockquote class=3D"gmail_quote" sty=
le=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:soli=
d;padding-left:1ex;border-left-color:rgb(204,204,204)"><div dir=3D"ltr">Flu=
idyne - right.<div>indeed.=C2=A0 there is no pressure increase at that temp=
erature with Evans.=C2=A0 you can literally=C2=A0remove the cap with your b=
are hand.=C2=A0=C2=A0<div>the specific heat capacity isn't quite as goo=
d (it's hard to beat water after all), but the advantages in terms of l=
ack of corrosion (and lack of expansion) are worth that for me.</div><div>t=
he point is that i ran Evans before with the Dale rad and it never ran that=
hot.=C2=A0 it was running fine at the high temp (I drove it home at that t=
emp - no problems - fueling perfect) but it reaches a point where you just =
don't want the engine too hot.=C2=A0 iron=C2=A0block, aluminium heads a=
nd pistons - the hotter it gets the more the expansion differences will bec=
ome.</div></div></div><br><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">michael.s.king@gmail.co=
m</a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin=
:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-le=
ft:1ex;border-left-color:rgb(204,204,204)"><div dir=3D"ltr">Hey Owain,<div>=
<br><div>Not sure about the BMR, but the Dales ones were actually Fluidyne =
radiators.=C2=A0</div><div><br></div><div>The Griffin ones were a separate =
company and IIRC had the glued together cores.</div><div><br></div><div>I h=
ear different things about evans.. one of the things i have heard=C2=A0is t=
hat the coolant runs hotter, but that it doesn't=C2=A0boil,=C2=A0so i g=
uess to ask:</div><div>Apart from it registering physically hotter, was it =
suffering any adverse effects?</div><div>Did it start vaporising the fuel?<=
/div><div>Did it start running rough?</div><div>Did it puke the coolant?</d=
iv><div><br></div><div><br></div></div></div><br><div class=3D"gmail_quote"=
><div dir=3D"ltr" class=3D"gmail_attr">On Fri, 2 Jul 2021 at 17:54, Owain L=
loyd via Tigers <<a href=3D"mailto:tigers@autox.team.net"; target=3D"_bla=
nk">tigers@autox.team.net</a>> wrote:<br></div><blockquote class=3D"gmai=
l_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-lef=
t-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)"><div dir=
=3D"ltr">Last year my Dale A (Griffin?) radiator cracked and I replaced it =
with this one from BMR in the UK:<br>=C2=A0<br><a href=3D"https://www.motor=
sportradiators.co.uk/store/Sunbeam-Tiger-Aluminium-Radiator-p146886570" tar=
get=3D"_blank">https://www.motorsportradiators.co.uk/store/Sunbeam-Tiger-Al=
uminium-Radiator-p146886570</a><br><br>Not really used the=C2=A0car since e=
xcept a=C2=A0couple of short trips.<div><br>This week I was going to take t=
he tiger out for a run over some mountain passes but after about 30 minutes=
, no traffic, it was running at well over 100C / ~230F.=C2=A0 I returned ho=
me and checked everything over.<br><br>1. Full of fresh Evans waterless coo=
lant. =C2=A0<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" f=
lex fan on water pump hub.<br>5. doesn't overheat at idle even when lef=
t running for 30 minutes.<br><br>I've NEVER had a problem with overheat=
ing at speed before. =C2=A0the only issues I had were at idle=C2=A0or in tr=
affic / slow speed but even those had been solved by all the above. =C2=A0e=
ngine 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. =C2=A0anyone running one of these?<br></div><div><br>=
</div></div><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" rel=3D"noreferrer" target=3D"_blank">http://www.t=
eam.net/donate.html</a><br><br><br>Archive: <a href=3D"http://www.team.net/=
pipermail/tigers" rel=3D"noreferrer" target=3D"_blank">http://www.team.net/=
pipermail/tigers</a> <a href=3D"http://autox.team.net/archive"; rel=3D"noref=
errer" target=3D"_blank">http://autox.team.net/archive</a><br><br><br><br><=
br><br>Unsubscribe: <a href=3D"http://autox.team.net/mailman/options/tigers=
/michael.s.king@gmail.com" rel=3D"noreferrer" target=3D"_blank">http://auto=
x.team.net/mailman/options/tigers/michael.s.king@gmail.com</a><br><br><br><=
br><br><br><br><br><br></blockquote></div><br clear=3D"all"><div><br></div>=
-- <br><div dir=3D"ltr">Regards<br><br>Michael King</div><br><br></blockquo=
te></div><br><br></blockquote></div><br><br>-- <br>Regards<br><br>Michael K=
ing<br><br><br></blockquote></div></div><br><br></div>
--000000000000e3313705c629c6e0--
--===============1866584692291633770==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
tigers@autox.team.net
Archive: http://www.team.net/pipermail/tigers http://autox.team.net/archive
Unsubscribe: http://autox.team.net/mailman/options/tigers/mharc@autox.team.net
--===============1866584692291633770==--
|