Temperature sensor for gauge

[magpies]

Is the temperature sensor thread 3/8bsp?

[phillpot]

Sounds a bit big, 1/4bsp?

[mk1fan]

Got an inlet manifold at the machine shop at teh moment getting the threads of those sensors retapped so can confirm both.

[Le TVR]

The spec sheet for the one I fitted gives M10 x 1 thread.

[mk1fan]

Right. Just had my inlet manifold threads cleared as the sensors had broken.

The two sensors above the thermostat are sized 1/8 BSP and 3/8 BSP in my three manifolds.

[phillpot]

I took an average

[phillpot]

mk1fan said:

The two sensors above the thermostat are sized 1/8 BSP and 3/8 BSP in my three manifolds.

1/8 BSP sounds good, those little sensors have been used for "donkeys years" so that makes sense.



Not convinced with the 3/8 though, BSP is 19 TPI, my spare sender checks out at 18 TPI = 3/8 NPT? With the management system being Bosch and it's a German Ford engine I'd have expected a metric thread but doesn't match up to any of my thread gauges

The two can be put together but will only go in a couple of threads before tightening, plenty of PTFE or threadseal and should be ok?

[TVRees]

A quote from the WWW -

When using an NPT fitting, it is common for you to only get a few turns out of the fitting. DO NOT try to be He-Man and continue tightening. It is not going to make a better seal the more you tighten the fitting. The thread is tapered and is not meant to go "all the way in" as you may think.

Both 1/4" and 3/8" NPT have 18TPI.