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Re: [Mgs] Flushing the cooling system?

To: Max Heim <max_heim@sbcglobal.net>
Subject: Re: [Mgs] Flushing the cooling system?
From: Simon Matthews <simon.d.matthews@gmail.com>
Date: Sun, 8 Mar 2009 14:58:32 -0800
Max,

Actually, I left the valve open for 10 years. In an MGA, the heat can
be turned off quite effectively using the air control valve. Since the
failure mode for the water valve is related to having the valve
closed, I just leave it open.

Simon


On Sun, Mar 8, 2009 at 1:27 PM, Max Heim <max_heim@sbcglobal.net> wrote:
> The rest of the system has a constant flow of coolant. The heater only gets
> flow if the valve is open. If it is seldom opened, it can become clogged (as
> you know).
>
> So, yeah, there is probably some muck, but it is unlikely anything is
> actually blocked (or you'd know about it).
>
> I have flushed systems with water from the hose (after draining the coolant,
> of course). You can buy an inexpensive flush-and-fill kit that includes a
> fitting that splices into a heater hose, that has the garden hose thread.
> You have to remove the thermostat and replace the housing in order to get a
> thorough flush. You also have to leave a drain open, possibly the radiator
> stopcock.
>
>
> on 3/7/09 11:03 PM, Simon Matthews at simon.d.matthews@gmail.com wrote:
>
>> On investigating why my MGA heater was not functioning, I discovered
>> that the heater control valve was completely full of scale. I do mean
>> completely.
>>
>> This made me wonder what the rest of the cooling system might be like.
>> Does anyone have any recommendations? Don't worry about it? Flush with
>> something? If so, what?
>>
>> Regards,
>> Simon
>
>
> --
>
> Max Heim
> '66 MGB GHN3L76149
> If you're near Mountain View, CA,
> it's the primer red one with chrome wires
>
>
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