Oil Pressure Gauge Install
 

I've deciding I'm installing an oil pressure gauge. I've already found the fittings to keep the OEM oil pressure sensor and be able to add the aftermarket sensor. For those who are interested, these should do the trick and only cost $5 ($15 with shipping):
2113-02-02-02 | MALE BSPT x FEMALE BSPP x FEMALE BSPP
3036-02-02 | MALE BSPT x FEMALE NPT

What kind of oil gauge do you recommend? I like the AEM digital gauge with LEDs around the outside but it's damn pricey. Auto Meter makes many that are less expensive, but I don't want a crappy unreliable gauge. Please post your experiences with different brands.

A 0-100psi gauge should be adequate, right? I can't imagine I'd need the 150psi gauge.

DIY to follow once I get all the parts.

When you start your car, the oil pressure can be as high as 110psi. I installed an oil gauge last year and that was one thing that surprised me.

Hmmm, so I should just go with the 150psi gauge. Sounds like that's what you have?

You will want the 150, I see the same when I start my car and have seen over than when pushing it.

Subscribing for info.

Same here!

The ECU monitors oil pressure?

It just an on/off sensor. It fires when the pressure drops below a internally set level, probably a really low number though.

So was it decided that the original fitting was BSP and not NPT? I remember a lot of back and forth a while back.

It's BSP from what I can find. That's why Nissport sells their $50 adapter which has a BSPT male, NPT female and BSP female port.

I've ordered all the parts, so I'll post more when I install it all.

Just seems weird to me that an entirely metric car would have a imperial threaded port for something as simple as an oil pressure switch. The threads are so close in size and shape it can be difficult to tell them apart, 9.7mm vs 10.0mm and a slightly different curve on the thread taper. As I understand it they are so close that you actually can get the parts to fit together, it just isn't going to make a perfect seal.

I was considering a remote sender, something like this.
German Supply - Parts for Volkswagen® Cars - VDO Oil Pressure Sender (Dual Pole) 150 PSI

Ohhhhh -- that must the the infamous "oil" dummy light sender.

Actually, now that we're talking about it, I have no idea what a good oil pressure is in general, let alone for this motor.

Any thoughts?

I want a oil pressure gauge myself. Along with another to stuff in the cubby hole. I've owned several Defi gauges. They work great. But pricey. And that's where I'm stumped for right now. After paying for install on two gauges and the gauges thereself. It would cost nearly a grand plus. I just have other things going on right now.

This is what you need:

NISMO Oil Tee Adapter for Oil Pressure Gauge :: Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com

^It's out of stock. Just order the parts I listed in the OP. Of course it doesn't help at all as it lists the threads as PT which means nothing.

guys just go in to your neighborhood hardware supply store and buy 1/8th tee and an adapter male/male

I highly doubt any local hardware stores have BSP fittings and definitely not NPT female to BSP male. Just everyone sit tight and I'll be the guinea pig on this. I'll tell you exactly what threads worked once I get the parts and my hands dirty.

So is about 10 psi per 1000 RPM normal?

Let us know what kinds of readings you see for hot and cold running conditions on the Z.

These are the gauges I have that will be installed this summer... don't know much about it. It should go for under $100. If you can buy direct, $35.

http://www.the370z.com/members/digit...l-pressure.jpg

I'll definitely post readings when I get it installed. The service manual lists proper oil pressure at 15psi at idle and 40psi at 2k rpm.

I decided on the AEM Analog 0-150psi oil pressure gauge. I saw a youtube video of that digital gauge and the values jump around so much it's maddening. Both the digital number in the middle and the LED on the outside move all over the place. This would have driven me bananas....so analog it is. The AEM gauges have adjustable LED colors so you can match the interior orange too.

Boosting the Car Digi?

good stuff Alex, so is it safe to say that most oil pressure gauges sensors use the same thread? I have my oil pressure gauge for my Camp2 that I need to install still.

It sounds like US-made aftermarket gauges all use NPT fittings while most European and Japanese cars favor BSP threads for their sensors. My best guess is the HKS gauge is NPT and will require the same setup I listed above. To be safe and knock this project out in one attempt, I ordered all the fittings in BSP and NPT versions. So I'm covered regardless of what I find when I disconnect the factory sensor. It only cost me $10 instead of $5 to get the fittings in both thread types.

While I wait on the parts to arrive, I need to decide on which 12V switched source to splice the gauge power into. I'll check and post in the AV section, but ideas are welcome. If I install the gauge on the side of the steering column, I think I'll run the power under the knee bolster and tap into the 12V cigarette lighter in the armrest. If I decide to mount the gauge up on the dash (behind and between the 3-pod gauges), I'll tap into the other 12V lighter in the passenger footwell. Both are ignition switched I believe.

Why not just do the add a fuse thing from something on the fuse panel?

Because I forgot that was an option! Thanks Gene.


Does anyone know where you can find an add-a-fuse ATM-Low Profile version? Amazon only has ATM and ATO.

***It looks like the ATM version will fit in the ATM low profile slot, so it's still doable. These low profile fuses are stupid.

Install Complete!

Check the DIY section: http://www.the370z.com/diy-section-d...ml#post1027089

Cool, look forward to checking out.