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If you have access a thermal gun you can point it at various areas of your
radiator to see if you have cooler blocked areas.
Ira Erbs
1959 AH 100-6
1967 MGB
Milwaukie, OR
On Sat, Jan 30, 2021, 4:10 PM Robert's New iPad <mgbobh@gmail.com> wrote:
> Hi Rick,
> You have been systematic about this.
> Good question about the opening of the new =E2=80=98stat. As far as I=
know,
> they either open completely or not at all. Others may know for sure.
> Sounds like you did all the right things with your efforts to clean th=
e
> radiator. I still wonder if it had sediment that solidified during the
> time the car was not in service. Was that a long time? Antifreeze in th=
e
> radiator then?
> Check the side-to-side temps of radiator. If the sides and centre are
> not close in temp, I would suspect blockage in the sides.
> Why the electric fan? My MGB with its yellow plastic fan was happy yea=
r
> round in Sarasota, admittedly not the heat of Houston, but I never had an=
y
> worries.
> Is fan turning the right direction? I have heard about that but never
> seen it.
> Bob
>
>
> > On Jan 30, 2021, at 6:38 PM, rolindsay@yahoo.com wrote:
> >
> > Hi Bob,
> > Thanks for the kind words, considered thoughts, and recommendations.
> I quote (most of) your words here so as to not miss any salient points.
> >
> > > Those of us shivering at 9 degrees this morning, with a wind
> > > blowing, almost wish we had your problem.
> >
> > LOL! I may be saying the same thing to you in 6 months, if with 90
> degrees added to your 9!
> >
> > > Same temp at radiator neck and =E2=80=98stat housing suggests
> > > that the thermostat is working, though if you have any
> > > doubt about it and do not know its age, you might consider
> > > replacing it anyway.
> >
> > I agree, but at what flow level? Perhaps the thermostat, which is
> new, may be not opening fully. If restricting flow, the temperatures befo=
re
> and after the thermostat might equilibrate but without enough coolant flo=
w
> to keep up with the engine's waste heat.
> >
> > > Were you able to measure top/bottom, left/right the
> > > radiator core temperature?
> >
> > Yes, but I didn't record the temperatures. I just verified that the
> bottom if the radiator was cooler than the top.
> >
> > > If temp does not reduce from top to bottom, or there are
> > > different temps at the same distance down from top,
> > > you could suspect the radiator.
> >
> > I will examine further. When restoring the car I cleaned the
> radiator, inside and out, and straightened any bent 'fins'. I back-flushe=
d
> the radiator with hose water then once the rinse water 'ran clear', I
> flushed it forward. Outside I sprayed the fins from both sides, with
> SimpleGreen then flushed it clean, back to front, with the water hose
> sprayer, again until the wash water ran clean.
> >
> > > I have not had stellar success with radiator cleaning products.
> > > My recommendation is to take it to a radiator shop and have it
> > > cleaned and serviced.
> >
> > See above.
> >
> > > What do you know about this water pump?
> >
> > It is new.
> >
> > > If, when your bring up engine temp from cold, with the rad cap
> > > off, you do not see some swirling in top of the radiator, the water
> > > pump is suspect.
> >
> > Will check, even though it is new (or perhaps rebuilt in China).
> >
> > Rick
> > _______________________________________________
> >
> > Mgs@autox.team.net
> > Donate: http://www.team.net/donate.html
> > Suggested annual donation $12.75
> >
> > Archive: http://www.team.net/pipermail/mgs http://autox.team.net/archiv=
e
> >
> > Unsubscribe: http://autox.team.net/mailman/options/mgs/mgbobh@gmail.com
> _______________________________________________
>
> Mgs@autox.team.net
> Donate: http://www.team.net/donate.html
> Suggested annual donation $12.75
>
> Archive: http://www.team.net/pipermail/mgs http://autox.team.net/archive
>
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m
>
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<div dir=3D"auto">If you have access=C2=A0 a thermal gun you can point it a=
t various areas of your radiator to see if you have cooler blocked areas.<b=
r><br><div data-smartmail=3D"gmail_signature">Ira Erbs<br>1959 AH 100-6<br>=
1967 MGB<br>Milwaukie, OR</div></div><br><div class=3D"gmail_quote"><div di=
r=3D"ltr" class=3D"gmail_attr">On Sat, Jan 30, 2021, 4:10 PM Robert's N=
ew iPad <<a href=3D"mailto:mgbobh@gmail.com";>mgbobh@gmail.com</a>> wr=
ote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;=
border-left:1px #ccc solid;padding-left:1ex">Hi Rick,<br>
=C2=A0 =C2=A0You have been systematic about this.<br>
=C2=A0 =C2=A0Good question about the opening of the new =E2=80=98stat.=C2=
=A0 As far as I know, they either open completely or not at all.=C2=A0 Othe=
rs may know for sure.<br>
=C2=A0 =C2=A0Sounds like you did all the right things with your efforts to =
clean the radiator.=C2=A0 I still wonder if it had sediment that solidified=
during the time the car was not in service.=C2=A0 Was that a long time?=C2=
=A0 Antifreeze in the radiator then? <br>
=C2=A0 =C2=A0Check the side-to-side temps of radiator.=C2=A0 If the sides a=
nd centre are not close in temp, I would suspect blockage in the sides. <br=
>
=C2=A0 =C2=A0Why the electric fan? My MGB with its yellow plastic fan was h=
appy year round in Sarasota, admittedly not the heat of Houston, but I neve=
r had any worries. <br>
=C2=A0 =C2=A0Is fan turning the right direction? I have heard about that bu=
t never seen it.<br>
Bob<br>
<br>
<br>
> On Jan 30, 2021, at 6:38 PM, <a href=3D"mailto:rolindsay@yahoo.com"; ta=
rget=3D"_blank" rel=3D"noreferrer">rolindsay@yahoo.com</a> wrote:<br>
> <br>
> Hi Bob,<br>
>=C2=A0 =C2=A0 Thanks for the kind words, considered thoughts, and recom=
mendations. I quote (most of) your words here so as to not miss any salient=
points. <br>
> <br>
> > Those of us shivering at 9 degrees this morning, with a wind<br>
> > blowing, almost wish we had your problem.<br>
> <br>
>=C2=A0 =C2=A0 LOL! I may be saying the same thing to you in 6 months, i=
f with 90 degrees added to your 9!<br>
> <br>
> > Same temp at radiator neck and =E2=80=98stat housing suggests<br>
> > that the thermostat is working, though if you have any<br>
> > doubt about it and do not know its age, you might consider<br>
> > replacing it anyway.<br>
> <br>
>=C2=A0 =C2=A0 I agree, but at what flow level? Perhaps the thermostat, =
which is new, may be not opening fully. If restricting flow, the temperatur=
es before and after the thermostat might equilibrate but without enough coo=
lant flow to keep up with the engine's waste heat.<br>
> <br>
> > Were you able to measure top/bottom, left/right the<br>
> > radiator core temperature?<br>
> <br>
>=C2=A0 =C2=A0 Yes, but I didn't record the temperatures. I just ver=
ified that the bottom if the radiator was cooler than the top.<br>
> <br>
> > If temp does not reduce from top to bottom, or there are<br>
> > different temps at the same distance down from top,<br>
> > you could suspect the radiator.<br>
> <br>
>=C2=A0 =C2=A0 I will examine further. When restoring the car I cleaned =
the radiator, inside and out, and straightened any bent 'fins'. I b=
ack-flushed the radiator with hose water then once the rinse water 'ran=
clear', I flushed it forward. Outside I sprayed the fins from both sid=
es, with SimpleGreen then flushed it clean, back to front, with the water h=
ose sprayer, again until the wash water ran clean.<br>
> <br>
> > I have not had stellar success with radiator cleaning products.<b=
r>
> > My recommendation is to take it to a radiator shop and have it<br=
>
> > cleaned and serviced.<br>
> <br>
>=C2=A0 =C2=A0 See above.<br>
> <br>
> > What do you know about this water pump? <br>
> <br>
>=C2=A0 =C2=A0 It is new.<br>
> <br>
> > If, when your bring up engine temp from cold, with the rad cap<br=
>
> > off, you do not see some swirling in top of the radiator, the wat=
er<br>
> > pump is suspect.<br>
> <br>
>=C2=A0 =C2=A0 Will check, even though it is new (or perhaps rebuilt in =
China).<br>
> <br>
>=C2=A0 Rick<br>
> _______________________________________________<br>
> <br>
> <a href=3D"mailto:Mgs@autox.team.net"; target=3D"_blank" rel=3D"norefer=
rer">Mgs@autox.team.net</a><br>
> Donate: <a href=3D"http://www.team.net/donate.html"; rel=3D"noreferrer =
noreferrer" target=3D"_blank">http://www.team.net/donate.html</a><br>
> Suggested annual donation=C2=A0 $12.75<br>
> <br>
> Archive: <a href=3D"http://www.team.net/pipermail/mgs"; rel=3D"noreferr=
er noreferrer" target=3D"_blank">http://www.team.net/pipermail/mgs</a> <a h=
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=3D"_blank">http://autox.team.net/archive</a><br>
> <br>
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bh@gmail.com" rel=3D"noreferrer noreferrer" target=3D"_blank">http://autox.=
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_______________________________________________<br>
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</blockquote></div>
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