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Oil pressure gauge?


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#1 Cary

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Posted 19 June 2017 - 05:35 AM

Where would I tap into the block to add an oil pressure gauge? Z24l. I am assuming the connection by the oil filter is the temp sensor?

#2 Lockleaf

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Posted 19 June 2017 - 07:07 AM

You don't need to tap anything. Those motors have an oil pressure switch for the dummy light and if it's 4x4 it's possibly already equipped with a pressure sending unit.

The connection you refer is the oil pressure switch. Temp senders are in the manifold.

You can just buy stock parts. If its a 720 you can buy factory volt and oil gauges and the wiring is already there for them minus 1 wire in the engine bay.

If its a d21, i would bet it's a similar scenario, though i don't know the details.

One important note. The thread pitch o on the oil sender is not metric or standard. Its British Pipe Thread.

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#3 Cary

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Posted 19 June 2017 - 10:16 AM

Thanks.

#4 racerx

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Posted 19 June 2017 - 12:20 PM

You have to search for a place that sells those fittings. I don't think home depot or osh sells them. At least, that was awhile back when I tried looking for them. You have to find a place like royal brass in san Jose, not sure where u live.

#5 Cary

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Posted 19 June 2017 - 12:24 PM

Yeah, a cheap AutoZone gauge doesn't have anything close. It was gonna be temporary to make sure it was good when I started up the first time

#6 shacks510

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Posted 19 June 2017 - 01:22 PM

Go to a speed parts shop, they'll probably have what you need. The aftermarket fittings I have are 1/8" 27 NPT, so I had to tap the block for that. It's barely different than 1/8" 28 BSPT in the block but enough that they wouldn't work together. I'm using an AN "T" fitting for a gauge and spray bar.
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#7 flatcat19

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Posted 19 June 2017 - 01:37 PM

Waste the money on an electric oil gauge. Mechanical oil gauge hook up is risky-anf messy when that tiny clear hose pops and leaks from behind your dash.

You can't hang if your nuts haven't dropped...it's physics


#8 flatcat19

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Posted 19 June 2017 - 01:37 PM


You can't hang if your nuts haven't dropped...it's physics


#9 kgrantkey

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Posted 19 June 2017 - 02:17 PM

Mechanical oil gauge hook up is risky

 

 

 

 Just  a warning about threads on the sending unit. I put an aftermarket oil pressure gauge into a 924 (Porsche) years ago. One night I lost all oil pressure. The sending unit had broken off where it threads into the block. In hindsight I realized the threads were incorrect on the sending unit. I pulled over immediately but still ruined the turbo bearing seals. Very hard lesson.



#10 racerx

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Posted 19 June 2017 - 04:34 PM

Never had an issue with my cheapo deluxe mechanical sun gauge. It leaked a bit when i hooked it up but that was me. 15 years or so later, still working.

#11 Crashtd420

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Posted 19 June 2017 - 05:23 PM

Go to a speed parts shop, they'll probably have what you need. The aftermarket fittings I have are 1/8" 27 NPT, so I had to tap the block for that. It's barely different than 1/8" 28 BSPT in the block but enough that they wouldn't work together. I'm using an AN "T" fitting for a gauge and spray bar.


I did similar to my block... 1/8 -28 bsp can be opened up with a 1/8-27 npt... if doing this to a running motor buy a bsp to npt adaptor easiest was is eBay for that..

you could tap the block but that scares me if you can't capture all the metal chips... I did the mod while i was cleaning the motor and all the galleys got washed out.... ...
There is Only. 002 difference in the thread pitch so The stock oil pressure sender will thread in still and work...

#12 MikeRL411

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Posted 19 June 2017 - 05:44 PM

I did similar to my block... 1/8 -28 bsp can be opened up with a 1/8-27 npt... if doing this to a running motor buy a bsp to npt adaptor easiest was is eBay for that..

you could tap the block but that scares me if you can't capture all the metal chips... I did the mod while i was cleaning the motor and all the galleys got washed out.... ...
There is Only. 002 difference in the thread pitch so The stock oil pressure sender will thread in still and work...

 

O!Riley [or whatever name they go by today] has the proper BTS to SAE adapter on their shelf.



#13 thisismatt

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Posted 19 June 2017 - 06:39 PM

Waste the money on an electric oil gauge. Mechanical oil gauge hook up is risky-anf messy when that tiny clear hose pops and leaks from behind your dash.

 

Seriously.  That stupid hose will snap off and screw you one way or another.


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#14 shacks510

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Posted 19 June 2017 - 07:48 PM

Waste the money on an electric oil gauge. Mechanical oil gauge hook up is risky-anf messy when that tiny clear hose pops and leaks from behind your dash.


Or use real braided lines with AN fittings. That's what I have. Shit, ice maker tubing is better than the junk that comes with the $30 auto zone gauge set.
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#15 flatcat19

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Posted 19 June 2017 - 08:07 PM

Or...electric gauges for a cleaner, easier install.


Worth the money.

You can't hang if your nuts haven't dropped...it's physics


#16 thisismatt

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Posted 19 June 2017 - 08:13 PM

Or...electric gauges for a cleaner, easier install.


Worth the money.

 

I just capped the outlet and freeball it now.  VQ swap it or die tryin


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#17 thisismatt

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Posted 19 June 2017 - 08:13 PM

err, but I have an electric gauge to go in later


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#18 flatcat19

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Posted 19 June 2017 - 08:15 PM

I just capped the outlet and freeball it now.  VQ swap it or die tryin


I know the idiot light works, and I know there is oil in the motor. Works for me.

You can't hang if your nuts haven't dropped...it's physics


#19 thisismatt

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Posted 19 June 2017 - 08:26 PM

Don't get me wrong, I like an oil pressure gauge, but I'm not going to fix the stupid mechanical one and I'm not ready to put in my nicer gauges yet.  As long as my volt & temp gauges are working I'm fine with those...


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#20 Crashtd420

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Posted 20 June 2017 - 02:26 AM

O!Riley [or whatever name they go by today] has the proper BTS to SAE adapter on their shelf.

I had to look that up since We just got an orielly and yes they have the adaptor for $6... definately the way to go. .

Screenshot_20170620-061553_zpsfuzqdg8l.p
Go electric those AutoZone mechanical ones are junk...
You can even add a tee adaptor a keep the stock light and sender working....