Hi Geo
Yes it would put additional strain on the rad but looking at a Herald 7lb
rad and a Herald 13lb rad side by side the tubes are visually identical so I
figured that it would probably be alright. Certainly if the rad is recored
it should be allright as I don't suppose the rad shops have different tube
thicknesses for the different pressures. The 1200 rad is longer than the
1300 rad so giving increased capacity and cooling area. I now suspect that
the real fault lay with a furred up system Isle of Wight water is amongst
the hardest (most minerals in suspension) water in the UK.
Graham.
----- Original Message -----
From: Geo Hahn <geohahn@azstarnet.com>
To: TR <triumphs@autox.team.net>
Sent: Friday, February 18, 2000 3:14 AM
Subject: Re: overflow tank question
>
> Graham Stretch wrote:
>
> > Use the tinsnips and the hacksaw to shorten down the lugs (on the cap)
that
> > hold the cap to the rad the 13lb cap has longer lugs to prevent
> > confusion/crossing with the 7lb cap, the extra 6lb raise the boiling
point a
> > few degrees.
>
> Doesn't this (increasing pressure from 7 lbs to 13 lbs) put additional
strain on
> the radiator... possibly promoting a leak?
>
> On my 'other' car I went from a 13 lbs to a 7 lbs cap just because the rad
is 20
> years old and I thought that would help it last longer. Yes it (higher
> pressure) raises the boiling point of the coolant but can't also be done
by
> changing the coolant mix if you don't need protection to -60° or whatever
a
> 50/50 mix provides?
>
> Geo Hahn
> 59 TR3A (with the wimp 4 lb cap)
> Tucson, AZ
>
>
|