BMC 1.5 oil pressure sensor

[MicB5454]

Hi guys,

I have been reading a thread from 2018 regarding oil pressure sensor/sender, I have a mechanical sender for my oil pressure and trying to find the correct fitment to replace it with a digital sensor and gauge.

After buying a 1/8 npt (think that's right) 

In the picture attached the new sensor is on the left the part on the right is what I have taken from my engine.

Any ideas of the sensor I would need to replace this.

The part has no markings or serial numbers 

Any help appreciated 

[Tracy D'arth]

BMC 1.5D oil sensor tapping is 1/8" BSP female thread. So you need a sensor that will fit and the display module to suit.

[MicB5454]

The new sensor I bought is 1/8"

The part removed from the engine has as near as I can measure without vernier is 1/2"

[Tony Brooks]

9 minutes ago, MicB5454 said:

The new sensor I bought is 1/8"

The part removed from the engine has as near as I can measure without vernier is 1/2"

 

the 1/8 BSP refers to the size of bore of the metal pipes the thread was originally used on so the actual OD is much larger than that. Tracy knows what she is on about.

[Tracy D'arth]

10 minutes ago, MicB5454 said:

The new sensor I bought is 1/8"

The part removed from the engine has as near as I can measure without vernier is 1/2"

If it measures 1/2" it will likely be 1/4" BSP but its odd, not standard.  BSP sizes relate to the bore of pipe size not the thread OD.

You could try a 1/4" BSP to 1/8 BSP bush rather than a male/male adapter.

[MicB5454]

I'm not disputing Tracy's answer Tony, the hole in the block has an 1/2" thread, and the thread that connects from the pipe to the gauge is 1/8", as stated in last post I'm not mechanically minded

Ok thanks will try finding one of those bushes

[Tony Brooks]

5 minutes ago, MicB5454 said:

I'm not disputing Tracy's answer Tony, the hole in the block has an 1/2" thread, and the thread that connects from the pipe to the gauge is 1/8", as stated in last post I'm not mechanically minded

Ok thanks will try finding one of those bushes

 

Take the adapter and the sender to somewhere like Midland Chandlers so you can match the threads up

[MicB5454]

I would but don't have a car, as livaboard boater and stuck on river Thames at Oxford just had a look on Web and seems plenty of choice for bushes so will buy a selection and find one that fits

[Tony Brooks]

Just now, MicB5454 said:

I would but don't have a car, as livaboard boater and stuck on river Thames at Oxford just had a look on Web and seems plenty of choice for bushes so will buy a selection and find one that fits

 

Try ASAP supplies

[MicB5454]

Had a look on their website and others, no one seems to have a sensor to fit

[Tracy D'arth]

Try this one. 

 

https://www.ebay.co.uk/itm/121337087793?hash=item1c40410731:g:40oAAOSwTM5Y0lHw&amdata=enc%3AAQAIAAAA0ClmQmUHTeaax054txy00M0MPCszbRKKNJwoE%2BzZyMbHEA5YtU6kLoXq9pKC5yy2u6yoL3qNFU8swi2fBvBWmvzFmNUgEeBcLYDtRrn99MpLUHwX5xgQLy8ntynOEoApbAOKIoZcuf0LqP59uhs1Dgy2xIN5zNipqVIFSuHSfAdKfLy8c06C%2BLkutq2lOUTgiv3XHSipFkbc4KcFKGSrEGwT4dnebpnKSrFD%2BqhEIjgxqUXoZ6C2Bto2sfqME1fsAxxVM8sJ7whpVD9hNZAre3c%3D|tkp%3ABk9SR8i02uGYYw

 

Bush.

Just now, MicB5454 said:

Had a look on their website and others, no one seems to have a sensor to fit

They won't because sensors are mostly the smaller threads like 1/8" BSP or the NT equivalent.

[MicB5454]

Thanks Tracy will order that now