Oil Pressure Sender Questions

[Kai]

Mainly just for clarification, but....what size is the thread on the sender (1/8 BSP-28tpi(?)), and what size wrench is needed to get a firm grip on it?

I'm looking at getting a 14mm crowsfoot for the ratchet i have, and i seem to remember a 14mm being mentioned as the size of the sender 'bolt' as it were.

Thanks in advance.

 

[hvyman]

Ya it's 14mm. And pretty sure it's 1/8 bsp as well.

 

[IJ.]

Confirmed 100% 1/8"bsp/t

 

[Devin LeBlanc]

yep its 14mm and 1/8 BSP/t (Tapered)

 

[Kai]

Second question....i have a snap-on mt37 oil pressure gauge, but only 1 adapter in the tin it comes in. The end of the hose terminates in a 1/8" NPT (27tpi), and the adapter...well...have a look. The thread length is 1/4" and it looks to be 7 threads, or 28 threads per inch - does that make it a 1/8" BSP?

Here, look for yourselves:

 

[IJ.]

1/8th bsp is 28 TPI, BSP/T has a different taper angle ot NPT, hard to tell from that pic bit it looks like bsp/p so generally seals with a crush washer.

 

[Devin LeBlanc]

Not tapered thread. looks like either NPT or regulator BSP

 

[IJ.]

Not tapered thread. looks like either NPT or regulator BSP

NPT = National Pipe Tapered...... :nono:

 

[Devin LeBlanc]

Whoops. We call NPT National Pipe thread. The thread is still tapered though.

When I was reading up there is a non tapered BSP thread. I am running a oil pressure sender with a NPT thread and just used a BSPT die to go over the threads on the NPT fitting. Threaded right in afterwards

 

[IJ.]

Whoops. We call NPT National Pipe thread. The thread is still tapered though.

When I was reading up there is a non tapered BSP thread. I am running a oil pressure sender with a NPT thread and just used a BSPT die to go over the threads on the NPT fitting. Threaded right in afterwards

Still has the wrong taper...