It sounds to me that you have an airlock in the heater radiator. I am not
familiar with the TR3A pipe set up but in theory the idea is to bleed the
system of air. Many French cars have a bleed unit fitted exactly for this
purpose. It is just a matter of running the engine until water flows from
the bleed screw. As to the practicalities of utilising this concept I would
have to leave to your imagination.
You could try disconnecting the cold heater outlet pipe in the engine bay
with the engine up to temperature and running. When hot water flows
reconnect. Tip: wear gloves the water should be hot.
Adrian TR4A CT 64306 O
Wales UK
On 7 November 2011 07:16, William Brewer <wsb1960tr3a at att.net> wrote:
> A couple of years ago I installed a Maradyne heater in my TR3A. It was
> designed for a farm tractor, but fit in the TR. I got the idea from HVDA
> who did
> the same. It has worked very well compared to the original TR3A heater or a
> Triumph Spitfire core that I was using before the Maradyne. Anyway, we
> just had
> our second snow here in Tehachapi and the heater is blowing cold air. I
> checked
> the valve on top of the head and when the car is running, water is going
> through
> there. I gently blew the heater core out with a garden hose and it looks
> clear.
> What could be downstream from this that would block the coolant from going
> through the core? The car is running a 185 thermostat and getting up to
> temperature. I have the radiator part way blocked off to try to keep the
> heat in
> the engine compartment. The hose feeding the heater core is warm (not hot)
> and
> the hose leaving the core is cold.
> The last communication I had from FT was that he told me he had a
> heater in
> his TR that would burn you out of the cockpit it worked so well. I wonder
> what
> he had. I wonder what happened to his TR, does anyone know?
> Man, I am tired of trying to stay warm in a TR. Driving it to work
> tomorrow, bundled up.
> TIA,
>
> -Bill in Tehachapi
>
>
> triumphs at autox.team.net
>
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