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Old 08-30-2020, 07:34 PM   #1
Paul Bennett
Senior Member
 
Join Date: Sep 2016
Posts: 628
Default Thread - I screwed up

1950 Mercury-shinny new stroker engine - at the bottom of the stock radiator is an drain petcock. As I needi a thermoratic switch to control the new electric fan, I had the radiator shop add a bung to the bottom radiator tank of the same thread as the drain petcock, which they did.

I Amazoned a good looking 170° thermo-switch, learning that 'good looking' isn't a good way to specify threads. I doesn't fit, likely metric.
Can someone tell me what the threads are? Like 3/5NPT or some such so I can reorder a proper switch, i.e. one that actually fits.

Thanks

I'm getting closer to engine swap scheduled for Sept28 - I need to figure out changing the 4bbl Edelbrock carb for throttle linkage to the pass side as its now on the drivers side. Who sells linkages?
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