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Xflow Oil Press Switch
Dick Axtell - 30/3/12 at 08:41 AM

Std xflow oil press switch - with threaded brass electrical conection.

Is this a BA thread? If not, can anybody tell me what true thread is?

BTW - original harness connectors were rubber-covered, push-on type. Don't have one for this diameter.

[Edited on 30/3/12 by Dick Axtell]

nilocp - 30/3/12 at 06:08 PM

Not BA, from memory 1/8 BSP(T).

Colin

Trollyjack - 30/3/12 at 06:21 PM

Ditto

rusty nuts - 31/3/12 at 07:11 AM

Can't remember for sure but I thought it might be 1/4 BSP, the same size as the oil gallery plugs?

Dick Axtell - 31/3/12 at 05:32 PM

BSP??????????????

Surely - that's the thread used for screwing into the block port. I'm needing the thread on the brass stud, for the electrical connection. BSF/UNF maybe, but which?

nilocp - 31/3/12 at 05:41 PM

Aah! Now he is being more explicit

No 6 UNF? But I seem to remember that a female bullet just pushed on to it?

I can check on Monday. I have a thread gauge!!!

Colin

Dick Axtell - 1/4/12 at 01:13 PM

quote:
Originally posted by nilocpBut I seem to remember that a female bullet just pushed on to it? I can check on Monday. I have a thread gauge!!!


Female bullet - Yes!! But as I said in my original post, I don't got any this size left (from the old donor loom). So, I was hoping to use a bolt-down elec connector instead. Therefore, I need to know the thread. Hope you'll be able to gauge it.

RichardK - 1/4/12 at 02:14 PM

Think its the same as the screw on ht lead connector on the top of any spark plug I seem to remember, if that helps!

Cheers

Rich

rusty nuts - 1/4/12 at 04:43 PM

Time to invest in a set of thread gauges??

Dick Axtell - 2/4/12 at 09:08 AM

quote:
Originally posted by rusty nuts
Time to invest in a set of thread gauges??


Have already done so. Just cannot lay my hands on them, at the moment!

Dick Axtell - 2/4/12 at 09:10 AM

quote:
Originally posted by RichardK
Think its the same as the screw on ht lead connector on the top of any spark plug I seem to remember, if that helps!


Great - thank you! Will deffo check that out, got some spare old sparkers somewhere in the lock-up. Might even doscover where I've hidden those thread gauges!!!!

nilocp - 2/4/12 at 04:14 PM

Well what a wally I am!!!

I have checked the thread on a temperature sender not an oil pressure sender!!!!!

But for information that is 3/16in 40 tpi. Which basically doesnt exist!!!

It is NOT M5, 2BA, BSF, Whitworth, ANC, UNC, ANF, UNF or even cycle thread!!!!!!

So tomorrow I will have a look at an oil switch. (But it probably is the same anyway!!)

Colin

Dick Axtell - 3/4/12 at 08:41 AM

quote:
Originally posted by nilocp
But for information that is 3/16in 40 tpi. Which basically doesnt exist!!!
It is NOT M5, 2BA, BSF, Whitworth, ANC, UNC, ANF, UNF or even cycle thread!!!!!!


Thanks for checking. Is there/Was there a specific thread for domestic electrical fittings, i.e. those little brass screws inside plugs & light switches? Some of the more industrial types have bigger dia threads for their screws etc.

nilocp - 3/4/12 at 04:38 PM

Dick, Right, I have been through all my oil pressure switches, and all the crossflow ones have got a spade connector! I do have some Pinto ones with a thread.
These are weird as well. M4 x 0.8, which doesnt exist!! Or it is 5/32 x 32 which is 8-32 UNC. This takes the red bullet, just pushes on.


I hope that helps???

Colin

Dick Axtell - 3/4/12 at 10:25 PM

Thanks for the additional data. Have tried using the screw collar from spark plug, but it doesn't fit.
However, have successfully used gash nut found in one of my odds-&-sods collections. It does not fit the water temp sensor, however, which appears to be yet another strange thread!!