510 temp sending unit

[russaroll]

174_5daeec67a8849

 

I've come across a couple of different answers.

 

It's not 3/8 NPT

It's not 3/8 BSPT

Is it M12x1.5? Nope

Maybe M16x1.5?

i know 5/8-18 is too sloppy.

please help 😕

Edited June 10, 2024 by russaroll

[MikeRL411]

12 minutes ago, russaroll said:

174_5daeec67a8849

 

I've come across a couple of different answers.

 

It's not 3/8 NPT

It's not 3/8 BSPT

Is it M12x1.5?

please help 😕

 

British Standard pipe thread. Adapters to ASA thread available in auto pas  stoes in after market oil pressure section, 3 9r 4 us dollars.

[MikeRL411]

Seems my typing is skipping "r"s, Bpt is a Nissan tradition since the kit-built Austen days, It is essentially a version of straight pipe thread.

[banzai510(hainz)]

zacrparts.com might have the orginal sender and 16mm nut that holds it in but I buy newer lower stat housing also as they usually crack taking them out afyer 40years

[russaroll]

29 minutes ago, banzai510(hainz) said:

zacrparts.com might have the orginal sender and 16mm nut that holds it in but I buy newer lower stat housing also as they usually crack taking them out afyer 40years

 I'm not looking for a new sending unit.  I bought aftermarket gauges and they came with a two wire probe 1/8 npt.  I was trying to find the right thread pitch so I can buy the right adapter.  I know I could just drill out the side and tap it, but there is already a perfectly good hole in it.  Why make more.  🙂

[Stoffregen Motorsports]

No, I believe it is a 5/8-16 thread. Or maybe 5/8-18.

 

I may be wrong, but I recall it being a "standard" thread that was pretty common among temp senders either British or Japanese.

[russaroll]

9 hours ago, Stoffregen Motorsports said:

No, I believe it is a 5/8-16 thread. Or maybe 5/8-18.

 

I may be wrong, but I recall it being a "standard" thread that was pretty common among temp senders either British or Japanese.

5/8-18 does thread in but it's sloppy.  I'd have to use mass amounts of teflon tape for a good seal.

[Stoffregen Motorsports]

33 minutes ago, russaroll said:

5/8-18 does thread in but it's sloppy.  I'd have to use mass amounts of teflon tape for a good seal.

Ok, I'll have to revisit this. Thanks for checking.

[russaroll]

On 6/12/2024 at 6:39 PM, Stoffregen Motorsports said:

Ok, I'll have to revisit this. Thanks for checking.

You were correct. It was 5/8-18. 

M16-1.5 is a close second.  🙂