radiator temp guage thread size/pitch?

Jim Stewart js at strappe.com
Fri Sep 21 09:40:56 PDT 2007

Dave C wrote:

> And in fact I just found my old thermoswitch on the workbench and
> it's sitting here in front of me threaded into a 1/8" x 27 NPT die.
> (I installed the Daytona temp meter.)

The stock sensor is 10mm X 1.0 mm. Obviously, screwing a 27 tpi thread into a 
25.4 TPI hole is going to bugger up the threads. Some people have done without 
leaks, but it's still buggery...



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