[Healeys] Overheating query

[i erbs]

Always glad go help. Another test is to remove the rad cap start the car
and wait go see if the water begins to circulate in the radiator when it
gets up to running temp. If the water just sits calm its not making it past
the stat. Anyway be careful to use penetrating oil on the nuts so you don't
break the studs on the stat Housing.

Ira Erbs
1959 100-6
MKI engine and disc brakes
Portland,OR

On Sep 8, 2016 5:33 AM, "Simon Lachlan" <simon.lachlan at homecall.co.uk>
wrote:

> Ira,
>
> I appreciate yr advice. I am as ever doing my research before plunging in.
> I’ve done an awful lot to cars over the years but, curiously, never had to
> replace a pump or stat. So, was keen to see if there are/were any little
> wrinkles that I’d overlooked.
>
> There being no noise or leak I was leaning towards a stat issue and the
> List’s advice seem to agree. I’ve got spare Smiths so will whip mine out
> and test it.
>
> But your suggestion of how to test for a dud pump will be filed for future
> reference..
>
>
>
> Simon
>
>
>
> *From:* i erbs [mailto:eyera3000 at gmail.com]
> *Sent:* 07 September 2016 22:29
> *To:* Simon Lachlan
> *Cc:* Healey List
> *Subject:* Re: [Healeys] Overheating query
>
>
>
> In most cases a failed water pump will leak out of the bottom  hole when
> the seals fail. Anothre way to test WP is to grab a fan blade and wiggle
> it. I found a bad water pump while out driving once that way. It will
> really move forward and back if the pump is bad. The easiest way to test a
> thermostat is to pull it and throw it into a pot heating water on the stove
> with a candy thermometer in the water. it should start to open 165-195
> depending on the temp rating. I had a NOS sleeved stat in my car and it ran
> great with new HD radiator and high speed fan, then it just began to
>  overheat. tested the thermostat as described and it barely opened even at
> boiling temp. replaced it with a non-sleeved stat and all is great.
>
>
> Ira Erbs
>
> Portland,OR
>
>       _______                                  _______
>      (______ \____1959 BN4____/ _______)
>          (_________________________)
>
>           BT7 engine and disk brakes
>
>
>
> Please excuse random auto corrects and misspelled words
>
>
>
> On Wed, Sep 7, 2016 at 9:19 AM, Simon Lachlan <
> simon.lachlan at homecall.co.uk> wrote:
>
> Hi,
>
> This isn’t the usual one ....”my car always runs hot; what’s the cure?” etc
>
> No, this is my very own original.....
>
> Background:-
>
> 1)      The car, MkII BT7, has never had overheating issues before today.
>
> 2)      It has a new, 12 month, modern design radiator.
>
> 3)      It has the correct type(original design) Smiths sleeved
> thermostat. (5 years old +/-).
>
> 4)      The waterpump was in the car when I bought the car +/- 25 yrs ago.
>
> Today’s symptoms:-
>
> 1)      I took it out to the pub today and, on returning, I noticed that
> there was HEAT and then that the gauge was off the scale.
>
> 2)      There was plenty of coolant in the rad and it didn’t seem overly
> hot.
>
> 3)      I didn’t have much time, but I got the impression that the rad
> was not blowing steam or making more of a “cooling-off noise” than usual.
>
> 4)      I also got the impression that the engine was hotter than the rad.
>
> Is this typical of a failed water pump?
>
> How can one differentiate between thermostat issues and waterpump issues?
>
>
>
> Any ideas?
>
> Simon
>
>
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