got any ideas

[Jerry]

It looks like i need to fit a 3/8 npt  (sensor) into a 12 by 1.75 hole ( aluminum head water temp sensor hole). I am thinking a helicoil will be to big, anyone have any other thoughts??

[SPEC]

Mumbler turned me an adapter on the lathe out of solid stock for my Autometer temp guage to fit the polaris sender hole

[Reidy02]

Go mumbler!!! (who eva that is)

[SPEC]

Mumbler is a member here...A mold maker by trade
He's helped me design and build alot of parts...I keep trying yo get him to do some more buggy stuff since he has a EDM and a big hass cnc mill
oh crap that reminds me I gotta drop off my lap top

[LiveWire]

It looks like i need to fit a 3/8 npt  (sensor) into a 12 by 1.75 hole ( aluminum head water temp sensor hole). I am thinking a helicoil will be to big, anyone have any other thoughts??

3/8 npt is bigger than 12mm so I'm not sure how the heli coil would work anyway. You could drill and tap it.

[Jerry]

It looked like the 12 mm was`bigger then the 3/8. I will have to try a test run first to see if there is enough to do the drill and tap. thanks Livewire

[LiveWire]

12mm is bigger than 3/8", but 3/8 NPT is bigger than 12mm. Pipe size is based on the minimum ID of the pipe. The threads are on the OD. 3/8 NPT is around 5/8". 1/8" NPT would be around 3/8".

[Admin]

1/8 mpt is 3/8 24...