The 160 degree thermostat would be closer to factory original.
If you have a heater for your car, you might want the 185 thermostat.
The original bellows type would close off the by-pass opening, as the
thermostat would open. You could block off the by-pass, or make a metal
piece that fits between the housing and the by-pass elbow, with a small
hole for water to pass through. That would duplicate the operation of the
by-pass as to water flow, with the thermostat open.
John Seim
Irvine, CA
On Jun 5, 2013, at 4:07 PM, Duvall Video Productions wrote:
> The original style thermostat stuck closed in my TD. I discovered a 52 mm
> thermostat fits between the original housing and the curved pipe going into
> the engine. I found a NAPA THM 185 fits well and opens at 180 degrees (82
> celcius).
>
> It seems to operate well- the gauge sits on the low end until the
thermostat
> opens and then shoots up- eventually it reaches temp and stays there. It
has
> a jiggle pin to let a little coolant and air through and I blocked off the
> bypass.
>
> I have since found a 160 degree as well ( Triton TT6-160 and Dayton DT15C.
)
> that might fit.
>
> Anyone know the original thermostat temp and what does everyone run? Can
you
> tell the difference between a 160 and 180 from a running or comfort
> standpoint?
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>
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