General: Oil Pressure Sender Unit info please.

[Gavin122S]

I'm currently installing a union to allow three senders to be fed from the OE oil pressure outlet, namely the OE oil press warning, oil press sender and oil temp sender. Anyway heres a link to a supplier of BSPT fittings, that seem quite hard to come by:

http://www.circuit-hydraulics.co.uk/acatalog/BSP_.html

It's a supplier for various BSPT fittings which can be used to customise most setups. As I already had the 4 way union (all with 1/4 bspt female), all I needed was some 1/4 to 1/8 reducers and a 1/4 male to 1/8 male to connect to the engine block.

[Clan]

Thats not the place to put an oil temp sender , the best place is in the sump somewhere to measure the temperature of the oil that is being fed to the engine .. You will get a false reading measuring the temp of the side of the block there where hot oil heat will disapate before being measured ...

[Gavin122S]

Originally Posted by Clan

Thats not the place to put an oil temp sender , the best place is in the sump somewhere to measure the temperature of the oil that is being fed to the engine .. You will get a false reading measuring the temp of the side of the block there where hot oil heat will disapate before being measured ...

Ahh... good call!... I'm sure I read that somewhere before. Do you know if there is an available adaptor which houses the sender inside the sump plug?

If not, any suggestions as to a viable location on my 122S Amazon?

Thanks for the feedback

[Clan]

The 140 oil temp gauge kit had a special sender which replaced the sump plug itself . Depending which gauge and sender you have you will need to either modify your sump plug or remove the sump and weld a threaded union into the side of the sump . This would be the better method as the sender could get knocked off the sump plug ..

Demon Tweeks are helpful if you talk to them ... Your sump plug thread is imperial

http://www.demon-tweeks.co.uk/produc...=all&x=43&y=11

[Alf ista]

I bought the splitter block that you can see on page 1 of this thread from Chris (agentstrangelove, him with the great avatar.....). I havent fitted it yet as I will wait till I change the oil, but I have the gauge in and the braided pipe ready. It suits my purpose perfectly. It threads into the block and has two take off points at 90 degrees. It is short so there is plenty of space between it and the exhaust. Chris thought that it might come off an 1800ES or maybe a 240 but he wasnt totally sure.

[222s]

Originally Posted by Gavin122S

I'm currently installing a union to allow three senders to be fed from the OE oil pressure outlet, namely the OE oil press warning, oil press sender and oil temp sender. Anyway heres a link to a supplier of BSPT fittings, that seem quite hard to come by:

http://www.circuit-hydraulics.co.uk/acatalog/BSP_.html

It's a supplier for various BSPT fittings which can be used to customise most setups. As I already had the 4 way union (all with 1/4 bspt female), all I needed was some 1/4 to 1/8 reducers and a 1/4 male to 1/8 male to connect to the engine block.

Thanks for the link - very useful! Just to clarify (as I want to make 100% sure that I order the right parts!), is the thread in the Amazon block 1/8? I'm not happy with the current 90 degree adaptor & those proper 'T' pieces look ideal, and would also enable me to have the oil light working again

[agent_strangelove]

Yes, the tapped hole in the block is 1/8-NPT. I was wrong in my earlier posting.

[222s]

Originally Posted by 222s

The thread in the block for the oil pressure light sender is the same as that of the BMC A series, so parts from Mini specialists can be used. When I fitted an oil gauge last year, I bought everything I needed from MiniSpares.

However on my car (twin downpipe manifold and Simons exhaust) there was not enough space for the T piece adaptor to allow both the oil line to the gauge and also the sender for the oil light to be plumbed in. Seeing as the oil light senders only seem to last about 3 years in my experience, I didn't bother with that and just tucked the wire up behind the heater box where it is hidden and also out of harm's way.

Be careful with the 90 degree angled adaptor though as it is easily damaged - don't over tighten!!!! Needs to be tight enough not to leak though.... I also used a braided hose rather then the plastic pipe (a few £ more but I prefer the peace of mind!), and was able to run it through an existing grommet on the bulkhead (think it might have been the temp gauge one) so no holes needed to be cut.

IIRC, all the parts came to about £60 / £65 including a brand new Smiths oil gauge and also the mounting plinth.

Finally a small update to this (& I've also fixed the dead links above). With the manifolds off to replace several knackered studs, I thought it a good time to sort out an adaptor that will allow the oil light to be reconnected whilst there is easy access. The regular t piece linked to above is way too long to clear the downpipes, especially since one of the threaded apertures is on the end. Ideally, what was needed was something very similar, but shorter, and with the holes on the sides. In the end, I found this, which is about half the depth:

Radial "T" Piece Oil Pressure Gauge Adapter 1/8 NPT BMC Range (056/3)

Whilst it has three outputs, they can also supply brass blanking plugs. In fact, being three inputs worked well, as then it could be properly tightened up, and the relevant outputs connected / blanked as appropriate for their resulting positions. One of these adaptors was also needed to connect up the oil line I used (since it had a female fitting on the end).

As can be seen from the pics below, it all sits very close to the block, and there is now plenty of clearance off the downpipe. The standard oil light wiring will probably need extending though (which I haven't done yet to mine).

[jimbo1593]

nice thread and very informative posting 222s. Definitely worth a boot back to the top of the forum.

Wonder if this could become a "how to guide"?

[222s]

Originally Posted by 222s

Finally a small update to this (& I've also fixed the dead links above). With the manifolds off to replace several knackered studs, I thought it a good time to sort out an adaptor that will allow the oil light to be reconnected whilst there is easy access. The regular t piece linked to above is way too long to clear the downpipes, especially since one of the threaded apertures is on the end. Ideally, what was needed was something very similar, but shorter, and with the holes on the sides. In the end, I found this, which is about half the depth:

Radial "T" Piece Oil Pressure Gauge Adapter 1/8 NPT BMC Range (056/3)

Whilst it has three outputs, they can also supply brass blanking plugs. In fact, being three inputs worked well, as then it could be properly tightened up, and the relevant outputs connected / blanked as appropriate for their resulting positions. One of these adaptors was also needed to connect up the oil line I used (since it had a female fitting on the end).

As can be seen from the pics below, it all sits very close to the block, and there is now plenty of clearance off the downpipe. The standard oil light wiring will probably need extending though (which I haven't done yet to mine).

Pics reattached