Bit more detail.
Here’s what I’d like to emulate,
Or perhaps more like this:-
Anyway, its quite a simple device, but at a minimum, it needs 4 components
(A.) An access point to the engines pressurised oil galleries
(B.) an oil pressure vessel of 1-2 litre capacity
(C.) A pipe connecting (A.) and (B.)
(D.) a valve to shut-off the connection between A and B
(A.) Access Point
The commercial implementation above uses the pressure switch port.
If one wants to retain the existing oil pressure switch, then a T-piece is required, one end of the T taking the pressure switch, the other providing the access point. These T-pieces are often used when fitting an after-market oil pressure gauge.
I’m not familiar with pipe fittings and they seem to have been standardized by a drunk French engineer with a USDOD taste for acronyms and an inability to use them consistently. There’s also quite a lot of conflicting information on’t web about the thread specs for Daihatsu’s, but AFAICT, one of these “TP8” adapters should fit, available from here:-
speedograph-richfield.com/ht … lines.html
1/8” BSPT – Male block fitting, apparently fairly standard for Japanese cars
1/8” BSPT – Female end fitting, to take the original oil pressure switch (not visible below)
1/8” x 27 NPT – take off point for aftermarket guage
This kind of thing:-
The above (UK) site also supplies an NPT to BSP adapter which in turn takes the BSP oil pipeline and guage, so the whole thing is BSP except the NPT port on the T-piece. Dunno why that’s different.
I’d guess the adapter is because BSP guages and pipe are more available than NPT in the UK, perhaps in contrast to Japan/Taiwan, though I’ve also heard it alleged that NPT always leaks because the tapered fitting gets expanded on tightening.
Anyway, I have two questions
Can I get one of these T-pieces in Taiwan, or do I have to order it from the UK?
Assuming I get one, are oil lines most easily obtainable as NPT or BSP fittings in Taiwan? (In the latter case I’d need to get an adapter)