Harlan,
I am not sure if the MGA sensor is the same as an MGB sensor, at least in
terms of outline. On the MGA, there is, in essence a very large
alcohol-filled thermometer.
The tapered pipe fitting pushes the bulb into the space below the
thermostat and (here is the key issue) through a hole in the centre of the
screw fitting runs the pipe back to the guage -- it is around this that I
wonder about leakage.
Simon
At 09:39 PM 8/3/98 -0500, Harlan Jillson wrote:
>Simon,
> Be careful when choosing a sealer for the temperature sender. You
>want to make sure that whatever you use doesnt insulate the sender from
>the block. The sender is a temperature sensitive resistive element and
>completes an electrical circuit from the dash reference voltage, through
>the gauge, then through the sender to electrical ground in the block. If
>the sender is insulated the temperature gauge either won't work or will
>be off due to the increased resistance.
> This isn't a big problem because the thread is a tapered pipe type and
>tends to 'bite' into the metal of the block as it's tightened, but it's
>something
>to watch for. Probably a thin coat of silicone gasket sealer, then snug it
>up and let the seal set up and you won't have leak problems.
> Boy, would you look at this.... it sure is a lot of stuf to write just to
>recommend some goo to seal up a water joint. I must be getting more
>verbose the older I get.
>Have fun.
>Harlan
>-----Original Message-----
>From: AEKell@aol.com <AEKell@aol.com>
>To: simon_matthews@avanticorp.com <simon_matthews@avanticorp.com>;
>mgs@autox.team.net <mgs@autox.team.net>
>Date: Monday, August 03, 1998 7:15 PM
>Subject: Re: Temperature sensor on MGA
>
>
>>In a message dated 98-08-03 17:20:49 EDT, simon_matthews@avanticorp.com
>>writes:
>>
>><< Should there be any kind of seal on the temperature sensor as it it
>screwed
>> into the block near the thermostat? >>
>>It's essentially just a plumbing fitting. I have just installed mine with
>no
>>sealant with no problem, but last time I used teflon tape only to make sure
>I
>>can remove it again if necessary.
>>
>>Alan
>>57 MGA
>>59 MGA mutt
>>57 MGA parts car
>>
>
>
>
---
Simon Matthews
'57 MGA
|