Thanks to those that replied. I'll probably just take it to a reliable
radiator shop and let them do their magic. Paul pointed out something that
is worth repeating. On all of three of the MG's I've owned, in the hot
summer sitting in traffic the temp gauge has travelled towards hot, and in
the 67 it sometimes registered over 230 degrees. None of them, however,
ever boiled any coolant out, i.e. as Paul says they are not truly
"overheating". I remember someone on this list saying to quit watching the
temp gauge and enjoy the driving:-)
On 2/14/07, Paul Hunt <paul.hunt1@blueyonder.co.uk> wrote:
>
> Depends how greater surface area is achieved. If by putting an extra row
> of
> tubes along the front or back the gain is relatively small as the 2nd, 3rd
> and 4th rows do progressively less work as the air presented to them is
> already heated by the previous rows, i.e. the law of diminishing returns.
> You would be better off increasing the draught at a stand-still with an
> electric fan. But bear in mind getting above N isn't overheating. Even
> getting up to the H isn't overheating if it isn't losing coolant or
> steaming. If the radiator is leaking it may not allow the system to
> develop
> sufficient pressure which in itself can cause boiling, and the leak may
> suddenly get much worse if the split worsens. MGBs run in desert states
> without additional cooling, although I don't know whether humidity makes
> the
> cooling system more or less effective. I know it makes the human cooling
> system less effective, but that is because it relies on evaporation of
> internal fluid (i.e. leaks!) which is more effective in dry heat. There
> can
> be any number of reasons why the cooling system can't dissipate what the
> engine is outputting, some of them engine related and others cooling
> system
> related.
>
> PaulH.
>
> ----- Original Message -----
> > I'm thinking about having the radiator recored and asking them to add
> more
> > heat dissipating area.
>
>
>
--
Monte and Jane Morris
1979 MGB, Carmine, Duel HIF's
http://picasaweb.google.com/montejane/MGS/photo#5001948439113957394
|