M13A oil pressure switch question

I want to install an oil pressure sensor and have been told in the past that a good way with 3rd gens is to remove the pressure switch and fit in its place a line with a T that houses the pressure switch and the new sensor, could that work? also does anybody know the thread specs on the pressure switch? i don't know how to check the thread dimensions myself and can't take the car off the road to work on it right now.

Suzuki uses a 1/8" BSPT fitting on the oil pressure switches.

I would suggest you not screw a tee fitting directly into the engine block, mount the tee solidly in the engine bay and use a braided stainless steel flex to connect it to the switch port on the engine.

Brass tees break because of the engine's vibration.

If you can't find braided stainless steel flex (try Demon Tweeks), you can use a 1/8" copper line coiled to allow for engine movement & vibration.

Yes that's what I wanted to do, also thanks for the specs, I read around that it was 1/8 gas but wasn't sure

wrote:

Yes that's what I wanted to do, also thanks for the specs, I read around that it was 1/8 gas but wasn't sure

 

gas is parallel thread- BSPP and needs sealant and something has to lock the parts together, like a nut. It is commonly used when there are olives on the pipe and a cap nut ( or a seal washer round the fitting), so the olive/washer provides the seal not the threads.
BSPT is tapered so it seals by tightening until the thread jams, and doesn't need sealant. (Although it doesn't hurt).

You can screw gas into taper because the pitch & thread angle are the same and vice versa, but they won't seal properly.

 

ok so i should get 1/8 BSPT fittings so they won't need sealant, but just in case, would teflon tape work?
my mechanic used it when putting the temperature sensor in my oil sandwich plate and it hasn't leaked even once.
i was thinking of using it as a way to get even more security if possible