Adding an oil pressure gauge to TD27T

[danielbeek]

Hey Guys,
Where have others added an oil pressure gauge sender on the WD21 Terrano TD27T?
The factory pressure switch appears to be in a very hard to access location under the inlet manifold. Is there an easier place to tap in?
If not, does anyone know what size/type thread the standard pressure switch has? Like to organize the T-piece & adapters before I take the manifold off.
Cheers.

[Crash bandicoot]

the standard fittings that come with most gauges senders etc fit nissan blocks ,plumbed mine off the left hand side of the block/ oil filter housing that goes to turbo, i was after a better indication of flow as apposed to pressure, you can have all the pressure in the world, but if shits blocked up it ain't getting where it needs to be.

[danielbeek]

Thanks Crash.
So did you add one of those inserts that is sandwiched between filter and the block, or into an oil feed line to the turbo? What pressure do you normally see? Is your location not ideal for reading pressure, hence the comment about flow being more important to you?
Cheers.

[Crash bandicoot]

Not a fan of plumbing up gauges right next to the pump or of filter housings as it is the main gallery before being dispersed around the engine block, and where the pressure is...if you want to know that your oil pump is working that's the place to be, but if you want an indication of flow the best bet is to find a pressure side gallery along the side of the block where the oil makes it's way to the head......most pressure side galleries will be a M10 fine thread bung or fitting and usually between a third to a half way along the block to ensure even dlsipertion to the cam journals valve train etc and will give a lower pressure reading but will be more consistent as the oil is diverted to different paths around the engine filter/turbo variable valve lifters etc(generalisation)........ the effects from RPM'S and the resulting oil pressure relief valve opening at around 7-8 bar will have a lesser effect/fluctuation on the aftermarket gauge reading.

basically the further from the pump the more even the reading and better indication of flow at the ends of the galleries before the oil is used to lubricate bearings etc.