Jack -
The 6 cylinder is designed to use the standard British bellows
thermostat which is hard to find these days. I actually like these
thermostats - they have a huge opening to allow free coolant
movement. The downside is when they fail, they fail in the closed
position, so they aren't perfect.
They have a special sleeve which closes the bypass port on your head -
this sleeve helps improve cooling efficiency when the car is hot by
preventing the backflow of hot coolant from the head back into the
block.
Moss motors sells the correct thermostat, but the standard thermostat
is fine for most applications.
Best,
Alan
On 7/10/08, Jack Feldman <qualitas.jack@gmail.com> wrote:
> Somewhere I read that the 3000 takes a special thermostat. I asked a
> representative of a LBC repair shop and he confirmed the information and
> gave me two part numbers. There were Stant 13358, and 13008. I went to my
> local NAPA store and they translated those part numbers into NAPA 169, and
> 170. Both of those thermostats looked exactly alike, and both were 180
> degree thermostats. The were so much alike I'm not even sure I got the
> correct part in the appropriate box.
>
> When I looked at them out of the box they just looked like any old
> thermostat.
>
> Do we really need a special thermostat? If the part numbers that were given
> to me are correct, what is special about these thermostats?
>
> My MGC has a special thermostat, but the difference is obvious.
>
> Thanks,
>
> Jack
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Alan
'52 A90
'53 BN1
'64 BJ8
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