[Healeys] Fwd: Thermal Switch Hole in Cylinder Head

[John and Kerry Rowe]

I have that on my 59 Bt7. When I bought the car (as a basket case) it had
the electric choke switch fitted. I fabricated a cover for the hole. It was
quickly discontinued and later heads didn't have the hole. If Don's 67 BJ8
has that, it has evidently been fitted with an early BT/BN7 head.

On Sun, Apr 4, 2021 at 7:21 AM Harold Manifold via Healeys <
healeys at autox.team.net> wrote:

> Thanks for the quick replies. My car was built in Nov 1960 and didn’t have
> the hole drilled in casting. I didn’t think of the thermal choke.
>
>
>
> Harold Manifold
>
>
>
> *From: *Don via Healeys <healeys at autox.team.net>
> *Sent: *Saturday, April 3, 2021 1:21 PM
> *To: *healeyguy at aol.com
> *Cc: *Healeys at autox.team.net
> *Subject: *Re: [Healeys] Fwd: Thermal Switch Hole in Cylinder Head
>
>
>
> This is what it looks like in my late production 67 BJ-8 . Yes a thermal
> choke that I guess never worked out .
>
> Sent from my iPhone
>
>
>
> On Apr 3, 2021, at 4:01 PM, healeyguy--- via Healeys <
> healeys at autox.team.net> wrote:
>
> 
>
>
>
> -----Original Message-----
> From: healeyguy at aol.com
> To: manifold at telus.net <manifold at telus.net>
> Sent: Sat, Apr 3, 2021 3:54 pm
> Subject: Re: [Healeys] Thermal Switch Hole in Cylinder Head
>
> Harold
>
> Thermo electric choke introduced in July 1959. Manual choke used again in
> November 1959.
>
> Perry
>
> -----Original Message-----
> From: Harold Manifold via Healeys <healeys at autox.team.net>
> To: Ken Fleming via Healeys <healeys at autox.team.net>
> Sent: Sat, Apr 3, 2021 3:31 pm
> Subject: [Healeys] Thermal Switch Hole in Cylinder Head
>
> Hello,
>
>
>
> What is the history for the Thermal Switch Hole in the cylinder head. Item
> 8 in the attached drawing. Some heads have the hole in the casting and it
> is blanked off and in some heads the hole was never added.
>
>
>
> Harold Manifold
>
>
>
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